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Wowpedia
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<onlyinclude>{{{{{tpl|tooltip}}}
{{cleanup}}{{ood}}
 
  +
|mode={{{mode|}}}
  +
|arg={{{arg|}}}
  +
|unique=100
  +
|stack=100
  +
|icon=INV_Enchant_DustVision
  +
|quality=Common
  +
|bind=BoP
  +
|itemid=26042
  +
|comment=You may turn 10 of these items in to Chief Researcher Amereldine at Halaa if the Horde have control of the base.
  +
|ilvl=65
  +
|name=Oshu'gun Crystal Powder Sample}}</onlyinclude>
   
  +
==Source==
As of [[Patch 4.0.1]] armor penetration has been removed from gear itemization, however it still exists in the game as a passive stat through the [[mastery]] system. <ref>{{ref web
 
  +
This item drops from any of a great number of creatures in [[Nagrand]].
|url=http://www.mmo-champion.com/index.php?topic=98116.0
 
|title=Blizzcon Day 2 - Game Systems Panel
 
|author=[http://www.mmo-champion.com/profile/?u=1 Boubouille]
 
|date=August 22, 2009, 09:02:36 pm
 
|accessdate=2009-10-01
 
|publisher=MMO Champion}}</ref>
 
   
  +
==Oshu'gun Crystal Powder Sample as a quest objective==
  +
This item, in stacks of 10, is an objective for the following quests:
  +
* {{questlong|horde|67|Oshu'gun Crystal Powder|id=10074}}
  +
* {{questlong|alliance|67|Oshu'gun Crystal Powder|id=10076}}
   
  +
==External links==
'''Armor penetration''' (sometimes abbreviated '''ArP''' or called '''armor pen''') is a value appearing on many talents and abilities that indicates the percentage of armor that will be ignored by an attack. ArP can be found as both Abilities (example: [[Sunder Armor]]), Talents like [[Mace Specialization]] or as [[Mastery]] bonuses. ArP is unique in that the more ArP you have, the greater the increase in damage becomes. Armor penetration is sometimes confused with [[spell penetration]], even though they affect different things.
 
  +
<!-- Read http://www.wowpedia.org/Wowpedia:External_links before posting your links here.
 
Until recently, this stat has not recieved much attention from Blizzard, however it was seen in the talent [[Serrated Blades]] since [[patch 1.10]]. Since itemization introduction of Arena Set 3, Blizzard has been popularizing the use of this modifier even into [[Image:Wrath-Logo-Small.PNG]].
 
 
 
== Armor penetration rating ==
 
Armor penetration is a rating system that affects a percentage of armor ignored. This means that upgrades scale more cleanly with all bosses but has a side effect of becoming less useful on low armor ones.
 
 
The conversion rate is about 7 ArP = 1 ArP rating. So if you had 1000 ArP, you now have 142.8 ArP rating. In the past, this would have been a 6% gain on a 15k armor foe and a 12.5% gain on an 8k armor foe; at level 80 it now gives a 9.2% gain to both targets.
 
 
{| class="darktable" style="text-align:center; width:23em"
 
|-
 
! colspan="8" | ArP Rating required to ignore 1% armor
 
|-
 
! Level 60
 
! Level 70
 
! Level 80
 
|-
 
| 3.75
 
| 5.92
 
| 13.99
 
|}
 
 
== Armor penetration rating against WotLK Raid bosses ==
 
The following tables provide detailed numbers for the effects of different levels of Armor Penetration Rating (ArP) in the case where a level 80 physical damage class attacks a level 83 raid boss with a given level of armor. ArP experiences diminishing returns for target armor lower than 8,317 armor.
 
 
'''Note:''' Due to various changes to armor penetration rating, these tables are outdated. The percent reduction and effective armor values are both correct; however, the armor penetration rating column uses the outdated 12.32:1 conversion (as opposed to the current 13.99:1 conversion).
 
 
{| class="darktable" style="text-align:center; width:23em"
 
|-
 
! colspan="17" | Armor reduction table
 
|-
 
! colspan="2" | Level 80
 
! colspan="15" | Level 83 Target Armor
 
|-
 
!ArP
 
!%AR
 
!1000
 
!2000
 
!3000
 
!4000
 
!5000
 
!6000
 
!7000
 
!8000
 
!8317
 
!9000
 
!10000
 
!20000
 
!30000
 
!40000
 
!50000
 
|-
 
!0
 
!0.0%
 
|1000
 
|2000
 
|3000
 
|4000
 
|5000
 
|6000
 
|7000
 
|8000
 
|8317
 
|9000
 
|10000
 
|20000
 
|30000
 
|40000
 
|50000
 
|-
 
!10
 
!0.8%
 
|992
 
|1984
 
|2976
 
|3968
 
|4959
 
|5951
 
|6943
 
|7935
 
|8249
 
|8931
 
|9928
 
|19901
 
|29874
 
|39847
 
|49820
 
|-
 
!20
 
!1.6%
 
|984
 
|1968
 
|2951
 
|3935
 
|4919
 
|5903
 
|6886
 
|7870
 
|8182
 
|8861
 
|9856
 
|19802
 
|29747
 
|39693
 
|49639
 
|-
 
!30
 
!2.4%
 
|976
 
|1951
 
|2927
 
|3903
 
|4878
 
|5854
 
|6829
 
|7805
 
|8114
 
|8792
 
|9784
 
|19702
 
|29621
 
|39540
 
|49459
 
|-
 
!40
 
!3.2%
 
|968
 
|1935
 
|2903
 
|3870
 
|4838
 
|5805
 
|6773
 
|7740
 
|8047
 
|8722
 
|9712
 
|19603
 
|29495
 
|39387
 
|49278
 
|-
 
!50
 
!4.1%
 
|959
 
|1919
 
|2878
 
|3838
 
|4797
 
|5756
 
|6716
 
|7675
 
|7979
 
|8653
 
|9639
 
|19504
 
|29369
 
|39233
 
|49098
 
|-
 
!60
 
!4.9%
 
|951
 
|1903
 
|2854
 
|3805
 
|4756
 
|5708
 
|6659
 
|7610
 
|7912
 
|8584
 
|9567
 
|19405
 
|29242
 
|39080
 
|48917
 
|-
 
!70
 
!5.7%
 
|943
 
|1886
 
|2829
 
|3773
 
|4716
 
|5659
 
|6602
 
|7545
 
|7844
 
|8514
 
|9495
 
|19306
 
|29116
 
|38926
 
|48737
 
|-
 
!80
 
!6.5%
 
|935
 
|1870
 
|2805
 
|3740
 
|4675
 
|5610
 
|6545
 
|7480
 
|7776
 
|8445
 
|9423
 
|19206
 
|28990
 
|38773
 
|48557
 
|-
 
!90
 
!7.3%
 
|927
 
|1854
 
|2781
 
|3708
 
|4634
 
|5561
 
|6488
 
|7415
 
|7709
 
|8375
 
|9351
 
|19107
 
|28863
 
|38620
 
|48376
 
|-
 
!100
 
!8.1%
 
|919
 
|1838
 
|2756
 
|3675
 
|4594
 
|5513
 
|6431
 
|7350
 
|7641
 
|8306
 
|9279
 
|19008
 
|28737
 
|38466
 
|48196
 
|-
 
!200
 
!16.2%
 
|838
 
|1675
 
|2513
 
|3350
 
|4188
 
|5025
 
|5863
 
|6700
 
|6966
 
|7612
 
|8558
 
|18016
 
|27474
 
|36933
 
|46391
 
|-
 
!300
 
!24.4%
 
|756
 
|1513
 
|2269
 
|3025
 
|3781
 
|4538
 
|5294
 
|6050
 
|6290
 
|6918
 
|7836
 
|17024
 
|26212
 
|35399
 
|44587
 
|-
 
!400
 
!32.5%
 
|675
 
|1350
 
|2025
 
|2700
 
|3375
 
|4050
 
|4725
 
|5400
 
|5614
 
|6223
 
|7115
 
|16032
 
|24949
 
|33866
 
|42783
 
|-
 
!500
 
!40.6%
 
|594
 
|1188
 
|1781
 
|2375
 
|2969
 
|3563
 
|4157
 
|4751
 
|4939
 
|5529
 
|6394
 
|15040
 
|23686
 
|32332
 
|40978
 
|-
 
!600
 
!48.7%
 
|513
 
|1025
 
|1538
 
|2050
 
|2563
 
|3076
 
|3588
 
|4101
 
|4263
 
|4835
 
|5673
 
|14048
 
|22423
 
|30799
 
|39174
 
|-
 
!700
 
!56.9%
 
|431
 
|863
 
|1294
 
|1725
 
|2157
 
|2588
 
|3019
 
|3451
 
|3588
 
|4141
 
|4951
 
|13056
 
|21160
 
|29265
 
|37369
 
|-
 
!800
 
!65.0%
 
|350
 
|700
 
|1050
 
|1400
 
|1751
 
|2101
 
|2451
 
|2801
 
|2912
 
|3447
 
|4230
 
|12064
 
|19898
 
|27731
 
|35565
 
|-
 
!900
 
!73.1%
 
|269
 
|538
 
|807
 
|1076
 
|1344
 
|1613
 
|1882
 
|2151
 
|2236
 
|2753
 
|3509
 
|11072
 
|18635
 
|26198
 
|33761
 
|-
 
!1000
 
!81.2%
 
|188
 
|375
 
|563
 
|751
 
|938
 
|1126
 
|1314
 
|1501
 
|1561
 
|2058
 
|2788
 
|10080
 
|17372
 
|24664
 
|31956
 
|-
 
!1230
 
!99.9%
 
|1
 
|2
 
|2
 
|3
 
|4
 
|5
 
|6
 
|6
 
|7
 
|462
 
|1129
 
|7798
 
|14468
 
|21137
 
|27806
 
|-
 
! colspan="2" |
 
! colspan="15" | Total effective target armor after ArP is applied
 
|}
 
 
{| class="darktable" style="text-align:center; width:23em"
 
|-
 
! COLSPAN="17" | [[Damage reduction]] table
 
|-
 
! colspan="2" | Level 80
 
! colspan="15" | Level 83 Target Armor
 
|-
 
!ArP
 
!%AR
 
!1000
 
!2000
 
!3000
 
!4000
 
!5000
 
!6000
 
!7000
 
!8000
 
!8317
 
!9000
 
!10000
 
!20000
 
!30000
 
!40000
 
!50000
 
|-
 
!0
 
!0.0%
 
|6.2%
 
|11.6%
 
|16.5%
 
|20.8%
 
|24.7%
 
|28.3%
 
|31.5%
 
|34.4%
 
|35.3%
 
|37.1%
 
|39.6%
 
|56.8%
 
|66.3%
 
|72.4%
 
|76.6%
 
|-
 
!10
 
!0.8%
 
|6.1%
 
|11.5%
 
|16.3%
 
|20.7%
 
|24.6%
 
|28.1%
 
|31.3%
 
|34.3%
 
|35.1%
 
|37.0%
 
|39.5%
 
|56.6%
 
|66.2%
 
|72.3%
 
|76.6%
 
|-
 
!20
 
!1.6%
 
|6.1%
 
|11.4%
 
|16.2%
 
|20.5%
 
|24.4%
 
|27.9%
 
|31.1%
 
|34.1%
 
|34.9%
 
|36.8%
 
|39.3%
 
|56.5%
 
|66.1%
 
|72.3%
 
|76.5%
 
|-
 
!30
 
!2.4%
 
|6.0%
 
|11.4%
 
|16.1%
 
|20.4%
 
|24.3%
 
|27.8%
 
|31.0%
 
|33.9%
 
|34.8%
 
|36.6%
 
|39.1%
 
|56.4%
 
|66.0%
 
|72.2%
 
|76.5%
 
|-
 
!40
 
!3.2%
 
|6.0%
 
|11.3%
 
|16.0%
 
|20.3%
 
|24.1%
 
|27.6%
 
|30.8%
 
|33.7%
 
|34.6%
 
|36.4%
 
|38.9%
 
|56.3%
 
|65.9%
 
|72.1%
 
|76.4%
 
|-
 
!50
 
!4.1%
 
|5.9%
 
|11.2%
 
|15.9%
 
|20.1%
 
|23.9%
 
|27.4%
 
|30.6%
 
|33.5%
 
|34.4%
 
|36.2%
 
|38.8%
 
|56.1%
 
|65.8%
 
|72.0%
 
|76.3%
 
|-
 
!60
 
!4.9%
 
|5.9%
 
|11.1%
 
|15.8%
 
|20.0%
 
|23.8%
 
|27.3%
 
|30.4%
 
|33.3%
 
|34.2%
 
|36.0%
 
|38.6%
 
|56.0%
 
|65.8%
 
|72.0%
 
|76.3%
 
|-
 
!70
 
!5.7%
 
|5.8%
 
|11.0%
 
|15.7%
 
|19.9%
 
|23.6%
 
|27.1%
 
|30.2%
 
|33.1%
 
|34.0%
 
|35.9%
 
|38.4%
 
|55.9%
 
|65.7%
 
|71.9%
 
|76.2%
 
|-
 
!80
 
!6.5%
 
|5.8%
 
|10.9%
 
|15.6%
 
|19.7%
 
|23.5%
 
|26.9%
 
|30.1%
 
|32.9%
 
|33.8%
 
|35.7%
 
|38.2%
 
|55.8%
 
|65.6%
 
|71.8%
 
|76.1%
 
|-
 
!90
 
!7.3%
 
|5.7%
 
|10.8%
 
|15.4%
 
|19.6%
 
|23.3%
 
|26.7%
 
|29.9%
 
|32.7%
 
|33.6%
 
|35.5%
 
|38.0%
 
|55.6%
 
|65.5%
 
|71.7%
 
|76.1%
 
|-
 
!100
 
!8.1%
 
|5.7%
 
|10.8%
 
|15.3%
 
|19.4%
 
|23.2%
 
|26.6%
 
|29.7%
 
|32.5%
 
|33.4%
 
|35.3%
 
|37.9%
 
|55.5%
 
|65.4%
 
|71.6%
 
|76.0%
 
|-
 
!200
 
!16.2%
 
|5.2%
 
|9.9%
 
|14.2%
 
|18.0%
 
|21.6%
 
|24.8%
 
|27.8%
 
|30.5%
 
|31.4%
 
|33.3%
 
|36.0%
 
|54.2%
 
|64.3%
 
|70.8%
 
|75.3%
 
|-
 
!300
 
!24.4%
 
|4.7%
 
|9.0%
 
|13.0%
 
|16.6%
 
|19.9%
 
|23.0%
 
|25.8%
 
|28.4%
 
|29.2%
 
|31.2%
 
|34.0%
 
|52.8%
 
|63.2%
 
|69.9%
 
|74.5%
 
|-
 
!400
 
!32.5%
 
|4.2%
 
|8.1%
 
|11.7%
 
|15.1%
 
|18.1%
 
|21.0%
 
|23.7%
 
|26.2%
 
|26.9%
 
|29.0%
 
|31.8%
 
|51.3%
 
|62.1%
 
|69.0%
 
|73.7%
 
|-
 
!500
 
!40.6%
 
|3.8%
 
|7.2%
 
|10.5%
 
|13.5%
 
|16.3%
 
|19.0%
 
|21.4%
 
|23.8%
 
|24.5%
 
|26.6%
 
|29.6%
 
|49.7%
 
|60.9%
 
|68.0%
 
|72.9%
 
|-
 
!600
 
!48.7%
 
|3.3%
 
|6.3%
 
|9.2%
 
|11.9%
 
|14.4%
 
|16.8%
 
|19.1%
 
|21.2%
 
|21.9%
 
|24.1%
 
|27.1%
 
|48.0%
 
|59.5%
 
|66.9%
 
|72.0%
 
|-
 
!700
 
!56.9%
 
|2.8%
 
|5.4%
 
|7.8%
 
|10.2%
 
|12.4%
 
|14.5%
 
|16.5%
 
|18.5%
 
|19.1%
 
|21.4%
 
|24.5%
 
|46.2%
 
|58.1%
 
|65.8%
 
|71.0%
 
|-
 
!800
 
!65.0%
 
|2.2%
 
|4.4%
 
|6.5%
 
|8.4%
 
|10.3%
 
|12.1%
 
|13.9%
 
|15.5%
 
|16.0%
 
|18.5%
 
|21.7%
 
|44.2%
 
|56.6%
 
|64.5%
 
|70.0%
 
|-
 
!900
 
!73.1%
 
|1.7%
 
|3.4%
 
|5.0%
 
|6.6%
 
|8.1%
 
|9.6%
 
|11.0%
 
|12.4%
 
|12.8%
 
|15.3%
 
|18.7%
 
|42.1%
 
|55.0%
 
|63.2%
 
|68.9%
 
|-
 
!1000
 
!81.2%
 
|1.2%
 
|2.4%
 
|3.6%
 
|4.7%
 
|5.8%
 
|6.9%
 
|7.9%
 
|9.0%
 
|9.3%
 
|11.9%
 
|15.5%
 
|39.8%
 
|53.3%
 
|61.8%
 
|67.7%
 
|-
 
!1230
 
!99.9%
 
|0.0%
 
|0.0%
 
|0.0%
 
|0.0%
 
|0.0%
 
|0.0%
 
|0.0%
 
|0.0%
 
|0.0%
 
|2.9%
 
|6.9%
 
|33.9%
 
|48.7%
 
|58.1%
 
|64.6%
 
|-
 
! colspan="2" |
 
! colspan="15" | Total percent damage prevented by the target armor after ArP is applied
 
|}
 
 
{| class="darktable" style="text-align:center; width:23em"
 
|-
 
! COLSPAN="17" |Final damage table
 
|-
 
! colspan="2" | Level 80
 
! colspan="15" | Level 83 Target Armor
 
|-
 
!ArP
 
!%AR
 
!1000
 
!2000
 
!3000
 
!4000
 
!5000
 
!6000
 
!7000
 
!8000
 
!8317
 
!9000
 
!10000
 
!20000
 
!30000
 
!40000
 
!50000
 
|-
 
!0
 
!0.0%
 
|938
 
|884
 
|835
 
|792
 
|753
 
|717
 
|685
 
|656
 
|647
 
|629
 
|604
 
|432
 
|337
 
|276
 
|234
 
|-
 
!10
 
!0.8%
 
|939
 
|885
 
|837
 
|793
 
|754
 
|719
 
|687
 
|657
 
|649
 
|630
 
|605
 
|434
 
|338
 
|277
 
|234
 
|-
 
!20
 
!1.6%
 
|939
 
|886
 
|838
 
|795
 
|756
 
|721
 
|689
 
|659
 
|651
 
|632
 
|607
 
|435
 
|339
 
|277
 
|235
 
|-
 
!30
 
!2.4%
 
|940
 
|886
 
|839
 
|796
 
|757
 
|722
 
|690
 
|661
 
|652
 
|634
 
|609
 
|436
 
|340
 
|278
 
|235
 
|-
 
!40
 
!3.2%
 
|940
 
|887
 
|840
 
|797
 
|759
 
|724
 
|692
 
|663
 
|654
 
|636
 
|611
 
|437
 
|341
 
|279
 
|236
 
|-
 
!50
 
!4.1%
 
|941
 
|888
 
|841
 
|799
 
|761
 
|726
 
|694
 
|665
 
|656
 
|638
 
|612
 
|439
 
|342
 
|280
 
|237
 
|-
 
!60
 
!4.9%
 
|941
 
|889
 
|842
 
|800
 
|762
 
|727
 
|696
 
|667
 
|658
 
|640
 
|614
 
|440
 
|342
 
|280
 
|237
 
|-
 
!70
 
!5.7%
 
|942
 
|890
 
|843
 
|801
 
|764
 
|729
 
|698
 
|669
 
|660
 
|641
 
|616
 
|441
 
|343
 
|281
 
|238
 
|-
 
!80
 
!6.5%
 
|942
 
|891
 
|844
 
|803
 
|765
 
|731
 
|699
 
|671
 
|662
 
|643
 
|618
 
|442
 
|344
 
|282
 
|239
 
|-
 
!90
 
!7.3%
 
|943
 
|892
 
|846
 
|804
 
|767
 
|733
 
|701
 
|673
 
|664
 
|645
 
|620
 
|444
 
|345
 
|283
 
|239
 
|-
 
!100
 
!8.1%
 
|943
 
|892
 
|847
 
|806
 
|768
 
|734
 
|703
 
|675
 
|666
 
|647
 
|621
 
|445
 
|346
 
|284
 
|240
 
|-
 
!200
 
!16.2%
 
|948
 
|901
 
|858
 
|820
 
|784
 
|752
 
|722
 
|695
 
|686
 
|667
 
|640
 
|458
 
|357
 
|292
 
|247
 
|-
 
!300
 
!24.4%
 
|953
 
|910
 
|870
 
|834
 
|801
 
|770
 
|742
 
|716
 
|708
 
|688
 
|660
 
|472
 
|368
 
|301
 
|255
 
|-
 
!400
 
!32.5%
 
|958
 
|919
 
|883
 
|849
 
|819
 
|790
 
|763
 
|738
 
|731
 
|710
 
|682
 
|487
 
|379
 
|310
 
|263
 
|-
 
!500
 
!40.6%
 
|962
 
|928
 
|895
 
|865
 
|837
 
|810
 
|786
 
|762
 
|755
 
|734
 
|704
 
|503
 
|391
 
|320
 
|271
 
|-
 
!600
 
!48.7%
 
|967
 
|937
 
|908
 
|881
 
|856
 
|832
 
|809
 
|788
 
|781
 
|759
 
|729
 
|520
 
|405
 
|331
 
|280
 
|-
 
!700
 
!56.9%
 
|972
 
|946
 
|922
 
|898
 
|876
 
|855
 
|835
 
|815
 
|809
 
|786
 
|755
 
|538
 
|419
 
|342
 
|290
 
|-
 
!800
 
!65.0%
 
|978
 
|956
 
|935
 
|916
 
|897
 
|879
 
|861
 
|845
 
|840
 
|815
 
|783
 
|558
 
|434
 
|355
 
|300
 
|-
 
!900
 
!73.1%
 
|983
 
|966
 
|950
 
|934
 
|919
 
|904
 
|890
 
|876
 
|872
 
|847
 
|813
 
|579
 
|450
 
|368
 
|311
 
|-
 
!1000
 
!81.2%
 
|988
 
|976
 
|964
 
|953
 
|942
 
|931
 
|921
 
|910
 
|907
 
|881
 
|845
 
|602
 
|467
 
|382
 
|323
 
|-
 
!1230
 
!99.9%
 
|1000
 
|1000
 
|1000
 
|1000
 
|1000
 
|1000
 
|1000
 
|1000
 
|1000
 
|971
 
|931
 
|661
 
|513
 
|419
 
|354
 
|-
 
! colspan="2" |
 
! colspan="15" | Total effective damage from a level 80 white hit of 1000 on a level 83 target after ArP is applied
 
|}
 
 
{| class="darktable" style="text-align:center; width:23em"
 
|-
 
! COLSPAN="17" | DPS percentage increase Table
 
|-
 
! colspan="2" | Level 80
 
! colspan="15" | Level 83 Target Armor
 
|-
 
!ArP
 
!%AR
 
!1000
 
!2000
 
!3000
 
!4000
 
!5000
 
!6000
 
!7000
 
!8000
 
!8317
 
!9000
 
!10000
 
!20000
 
!30000
 
!40000
 
!50000
 
|-
 
!0
 
!0.0%
 
|0.0%
 
|0.0%
 
|0.0%
 
|0.0%
 
|0.0%
 
|0.0%
 
|0.0%
 
|0.0%
 
|0.0%
 
|0.0%
 
|0.0%
 
|0.0%
 
|0.0%
 
|0.0%
 
|0.0%
 
|-
 
!10
 
!0.8%
 
|0.1%
 
|0.1%
 
|0.1%
 
|0.2%
 
|0.2%
 
|0.2%
 
|0.3%
 
|0.3%
 
|0.3%
 
|0.3%
 
|0.3%
 
|0.3%
 
|0.3%
 
|0.3%
 
|0.3%
 
|-
 
!20
 
!1.6%
 
|0.1%
 
|0.2%
 
|0.3%
 
|0.3%
 
|0.4%
 
|0.5%
 
|0.5%
 
|0.6%
 
|0.6%
 
|0.6%
 
|0.6%
 
|0.6%
 
|0.6%
 
|0.6%
 
|0.6%
 
|-
 
!30
 
!2.4%
 
|0.2%
 
|0.3%
 
|0.4%
 
|0.5%
 
|0.6%
 
|0.7%
 
|0.8%
 
|0.8%
 
|0.9%
 
|0.9%
 
|0.9%
 
|0.9%
 
|0.8%
 
|0.8%
 
|0.8%
 
|-
 
!40
 
!3.2%
 
|0.2%
 
|0.4%
 
|0.5%
 
|0.7%
 
|0.8%
 
|0.9%
 
|1.0%
 
|1.1%
 
|1.2%
 
|1.2%
 
|1.2%
 
|1.1%
 
|1.1%
 
|1.1%
 
|1.1%
 
|-
 
!50
 
!4.1%
 
|0.3%
 
|0.5%
 
|0.7%
 
|0.9%
 
|1.0%
 
|1.2%
 
|1.3%
 
|1.4%
 
|1.5%
 
|1.5%
 
|1.4%
 
|1.4%
 
|1.4%
 
|1.4%
 
|1.4%
 
|-
 
!60
 
!4.9%
 
|0.3%
 
|0.6%
 
|0.8%
 
|1.0%
 
|1.2%
 
|1.4%
 
|1.6%
 
|1.7%
 
|1.8%
 
|1.7%
 
|1.7%
 
|1.7%
 
|1.7%
 
|1.7%
 
|1.7%
 
|-
 
!70
 
!5.7%
 
|0.4%
 
|0.7%
 
|0.9%
 
|1.2%
 
|1.4%
 
|1.6%
 
|1.8%
 
|2.0%
 
|2.0%
 
|2.0%
 
|2.0%
 
|2.0%
 
|2.0%
 
|2.0%
 
|2.0%
 
|-
 
!80
 
!6.5%
 
|0.4%
 
|0.8%
 
|1.1%
 
|1.4%
 
|1.6%
 
|1.9%
 
|2.1%
 
|2.3%
 
|2.3%
 
|2.3%
 
|2.3%
 
|2.3%
 
|2.3%
 
|2.3%
 
|2.3%
 
|-
 
!90
 
!7.3%
 
|0.5%
 
|0.9%
 
|1.2%
 
|1.5%
 
|1.8%
 
|2.1%
 
|2.4%
 
|2.6%
 
|2.7%
 
|2.6%
 
|2.6%
 
|2.6%
 
|2.6%
 
|2.6%
 
|2.6%
 
|-
 
!100
 
!8.1%
 
|0.5%
 
|1.0%
 
|1.4%
 
|1.7%
 
|2.0%
 
|2.3%
 
|2.6%
 
|2.9%
 
|3.0%
 
|2.9%
 
|2.9%
 
|2.9%
 
|2.9%
 
|2.9%
 
|2.8%
 
|-
 
!200
 
!16.2%
 
|1.0%
 
|1.9%
 
|2.7%
 
|3.5%
 
|4.2%
 
|4.8%
 
|5.4%
 
|5.9%
 
|6.1%
 
|6.1%
 
|6.1%
 
|6.0%
 
|5.9%
 
|5.9%
 
|5.9%
 
|-
 
!300
 
!24.4%
 
|1.5%
 
|2.9%
 
|4.2%
 
|5.3%
 
|6.4%
 
|7.4%
 
|8.3%
 
|9.2%
 
|9.4%
 
|9.4%
 
|9.4%
 
|9.2%
 
|9.1%
 
|9.1%
 
|9.0%
 
|-
 
!400
 
!32.5%
 
|2.0%
 
|3.9%
 
|5.6%
 
|7.2%
 
|8.7%
 
|10.1%
 
|11.4%
 
|12.6%
 
|13.0%
 
|12.9%
 
|12.9%
 
|12.7%
 
|12.6%
 
|12.5%
 
|12.4%
 
|-
 
!500
 
!40.6%
 
|2.6%
 
|4.9%
 
|7.2%
 
|9.2%
 
|11.2%
 
|13.0%
 
|14.7%
 
|16.3%
 
|16.7%
 
|16.7%
 
|16.7%
 
|16.4%
 
|16.2%
 
|16.1%
 
|16.0%
 
|-
 
!600
 
!48.7%
 
|3.1%
 
|6.0%
 
|8.7%
 
|11.3%
 
|13.7%
 
|16.0%
 
|18.1%
 
|20.2%
 
|20.8%
 
|20.8%
 
|20.7%
 
|20.3%
 
|20.1%
 
|20.0%
 
|19.9%
 
|-
 
!700
 
!56.9%
 
|3.6%
 
|7.1%
 
|10.3%
 
|13.4%
 
|16.4%
 
|19.1%
 
|21.8%
 
|24.3%
 
|25.1%
 
|25.1%
 
|25.0%
 
|24.5%
 
|24.3%
 
|24.1%
 
|24.0%
 
|-
 
!800
 
!65.0%
 
|4.2%
 
|8.2%
 
|12.0%
 
|15.6%
 
|19.1%
 
|22.5%
 
|25.7%
 
|28.8%
 
|29.8%
 
|29.7%
 
|29.6%
 
|29.1%
 
|28.8%
 
|28.6%
 
|28.4%
 
|-
 
!900
 
!73.1%
 
|4.7%
 
|9.3%
 
|13.7%
 
|17.9%
 
|22.1%
 
|26.0%
 
|29.9%
 
|33.6%
 
|34.8%
 
|34.7%
 
|34.6%
 
|33.9%
 
|33.6%
 
|33.3%
 
|33.1%
 
|-
 
!1000
 
!81.2%
 
|5.3%
 
|10.4%
 
|15.4%
 
|20.3%
 
|25.1%
 
|29.8%
 
|34.4%
 
|38.8%
 
|40.2%
 
|40.1%
 
|40.0%
 
|39.2%
 
|38.7%
 
|38.4%
 
|38.2%
 
|-
 
!1230
 
!99.9%
 
|6.6%
 
|13.1%
 
|19.7%
 
|26.2%
 
|32.8%
 
|39.3%
 
|45.9%
 
|52.5%
 
|54.5%
 
|54.4%
 
|54.2%
 
|53.0%
 
|52.3%
 
|51.9%
 
|51.6%
 
|-
 
! colspan="2" |
 
! colspan="15" | Total percent damage increase due to ArP
 
|}
 
 
== Percentage-based ArP ==
 
'''This was Pre-WOTLK:'''
 
 
 
Since some talents operate on percentages such as [[Mace Specialization (Warrior talent)|Mace Specialization]], they operate onto the already existing modifiers. Instead of ignoring armor from the base value of the target immediately, it takes into account the effects of [[Sunder Armor]], [[Expose Armor]], [[Faerie Fire]], [[Curse of Weakness]], [[Sting]], and [[Acid Spit]] and then does a post operation of the value when it calculates mace specialization and piercing shots.
 
 
In addition, what this entails for percentage based ArP is that the higher the armor the greater the ArP raw value and the lesser the armor the less ArP raw value. That is to say, percentage based ArP suffers diminishing returns for heavily sundered units in terms of raw ArP value, especially for those with very low armor value.
 
 
 
 
'''''Now everything operates in percentages and stacks additively in two categories: Debuffs and personal Armor Penetration. The two categories stack multiplicatively with each other.'''''
 
 
== Armor penetration benefits ==
 
Armor penetration will increase non-[[Bleed]] physical damage by a percentage significant for virtually every target, however, for lightly armored targets it is less effective in the damage it provides.
 
 
From the perspective of a warrior, because armor penetration increases damage, he will get a moderate gain in [[rage]] generation as a result of higher armor penetration. Also, armor penetration causes the warrior to increase [[Execute]] damage.
 
 
Opportunistically, from a PvP point of view, a warrior may apply fewer stacks of [[Sunder Armor]], assuming they have a higher armor pen than usual, because they have a head start on armor ignored. Or they may choose to boost the sustained damage further by a significant percentage by applying more stacks.
 
 
== Skills and talents ==
 
* Deathknight: [[Blood Gorged]].
 
* Druid: [[Faerie Fire]].
 
* Hunter: [[Acid Spit]] (Worm pet) and [[Sting]] (Wasp pet).
 
* Rogue: [[Mace Specialization (Rogue talent)|Mace Specialization]] and [[Serrated Blades]]. [[Expose Armor]] also effectively counts as armor penetration.
 
* Warrior: [[Mace Specialization (Warrior talent)|Mace Specialization]] and [[Battle Stance]]. [[Sunder Armor]] also effectively counts as armor penetration.
 
* [[Expose Armor]], [[Sunder Armor]], and [[Acid Spit]] do not stack.
 
* [[Faerie Fire]], [[Curse of Weakness]], and [[Sting]] do not stack.
 
 
== Itemization ==
 
'''Warrior sets:'''
 
*{{set|Heroes' Dreadnaught Battlegear}}
 
*{{set|Valorous Dreadnaught Battlegear}}
 
*{{set|Valorous Siegebreaker Battlegear}}
 
*{{set|Conqueror's Siegebreaker Battlegear}}
 
*{{Alliance Icon Small}} {{set|Conqueror's Wrynn's Battlegear}}, {{Horde Icon Small}} {{set|Conqueror's Hellscream's Battlegear}}
 
*{{Alliance Icon Small}} {{set|Triumphant Wrynn's Battlegear}}, {{Horde Icon Small}} {{set|Triumphant Hellscream's Battlegear}}
 
*{{Alliance Icon Small}} {{set|Triumphant Wrynn's Battlegear (heroic)}}, {{Horde Icon Small}} {{set|Triumphant Hellscream's Battlegear (heroic)}}
 
*{{set|Ymirjar Lord's Battlegear}}
 
*{{set|Sanctified Ymirjar Lord's Battlegear}}
 
*{{set|Sanctified Ymirjar Lord's Battlegear (heroic)}}
 
 
 
'''Rogue sets:'''
 
*{{set|Heroes' Bonescythe Battlegear}}
 
*{{set|Valorous Bonescythe Battlegear}}
 
*{{set|Valorous Terrorblade Battlegear}}
 
*{{set|Conqueror's Terrorblade Battlegear}}
 
*{{Alliance Icon Small}} {{set|Conqueror's VanCleef's Battlegear}}, {{Horde Icon Small}} {{set|Conqueror's Garona's Battlegear}}
 
*{{Alliance Icon Small}} {{set|Triumphant VanCleef's Battlegear}}, {{Horde Icon Small}} {{set|Triumphant Garona's Battlegear}}
 
*{{Alliance Icon Small}} {{set|Triumphant VanCleef's Battlegear (heroic)}}, {{Horde Icon Small}} {{set|Triumphant Garona's Battlegear (heroic)}}
 
 
'''Hunter sets:'''
 
*{{set|Heroes' Cryptstalker Battlegear}}
 
*{{set|Valorous Cryptstalker Battlegear}}
 
*{{set|Valorous Scourgestalker Battlegear}}
 
*{{set|Conqueror's Scourgestalker Battlegear}}
 
*{{Alliance Icon Small}} {{set|Conqueror's Windrunner's Battlegear}}, {{Horde Icon Small}} {{set|Conqueror's Windrunner's Pursuit}}
 
*{{Alliance Icon Small}} {{set|Triumphant Windrunner's Battlegear}}, {{Horde Icon Small}} {{set|Triumphant Windrunner's Pursuit}}
 
*{{Alliance Icon Small}} {{set|Triumphant Windrunner's Battlegear (heroic)}}, {{Horde Icon Small}} {{set|Triumphant Windrunner's Pursuit (heroic)}}
 
 
 
'''Weapons:'''
 
*{{loot|epic|Hellion Glaive}}
 
*{{loot|epic|Twin's Pact}}
 
*{{loot|epic|Edge of Ruin}}
 
*{{loot|epic|Dual-blade Butcher}}
 
*{{loot|epic|Justicebringer}}
 
*{{loot|epic|Stormedge}}
 
*{{loot|epic|Marrowstrike}}
 
*{{loot|epic|Hoperender}}
 
*{{loot|epic|Lotrafen, Spear of the Damned}}
 
*{{Alliance Icon Small}}{{loot|epic|Archon Glaive}},{{Horde Icon Small}}{{loot|epic|Hellion Glaive}}
 
*{{loot|epic|Ironsoul}}
 
*{{loot|epic|Abaddon}}
 
*{{loot|epic|Aesir's Edge}}
 
*{{Alliance Icon Small}}{{loot|epic|Reckoning (sword)}},{{Horde Icon Small}}{{loot|epic|Edge of Agony}}
 
*{{loot|epic|Stormrune Edge}}
 
*{{loot|epic|Voldrethar, Dark Blade of Oblivion}}
 
 
'''Trinkets:'''
 
*{{loot|epic|Banner of Victory}}
 
*{{loot|epic|Grim Toll}}
 
*{{loot|epic|Mjolnir Runestone}}
 
*{{loot|epic|Needle-Encrusted Scorpion}}
 
 
'''Enchants:'''
 
*{{loot|enchant|Enchant Weapon - Executioner}} note: 2x Executioner do not stack.
 
 
'''Gems:'''
 
*{{loot|epic|Fractured Cardinal Ruby}}
 
*{{loot|epic|Puissant Dreadstone}}
 
*{{loot|epic|Fractured Dragon's Eye}}
 
*{{loot|rare|Fractured Scarlet Ruby}}
 
*{{loot|rare|Puissant Twilight Opal}}
 
 
== Countering armor penetration==
 
To effectively neutralize or counter the effectiveness of armor penetration one could simply increase their armor value in combat time with drinking potions such as {{loot|common|Indestructible Potion}}, changing to [[Bear Form]] or [[Moonkin Form]], equipping a [[Shield]], dropping a [[Stoneskin Totem]], casting [[Inner Fire]] or [[Devotion Aura]], or speccing in [[Toughness]] and [[Thick Hide (Druid talent)|Thick Hide]]. You can also enchant your gear with armor. For example: {{loot|common|Enchant Cloak - Mighty Armor}} to counter armor pen. In short, armor penetration is really only countered by more armor.
 
 
== Technical explanation from Ghostcrawler ==
 
 
Quote from: Ghostcrawler
 
 
''Okay, here is a fairly technical explanation we put together for how armor pen works.''
 
 
''We didn’t want Armor Penetration Rating to be too powerful against low armor targets, like it had been in BC. We also didn’t want Armor Penetration Rating to be too powerful against high armor targets.''
 
 
''So, we decided on a system where there is a cap on how much armor the Armor Penetration Rating can be applied to. So, the first X armor on the target is reduced by the percentage listed in the Armor Penetration Rating tooltip, and all armor past that X is unaffected. Another way of understanding that is we multiply the percentage in the tooltip times the minimum of the two values: the cap, and the amount of armor on the target after all other modifiers.''
 
 
''Computing the cap is a little tricky unless you are already familiar with how World of Warcraft armor works. There is an armor constant we’ll call C. C is derived as follows (in some pseudocode):''
 
 
 
If (level<60)
 
C=400+85*targetlevel
 
Else''
 
C=400+85*targetlevel+4.5*85*(targetlevel-59);
 
 
''For a level 80 target, C=15232.5. For a level 83, C=16635.''
 
 
''The cap for Armor Penetration then is: (armor + C)/3.''
 
 
''A level 80 warrior creature has 9729 armor. C=15232.5. So, the cap is (9729+15232.5)/3=8320.5. Let’s say a player has 30% armor penetration from armor penetration rating and no other modifiers that complicate the calculation (talents, Battle Stance, Sunder Armor, etc.). The game chooses the minimum of 8320.5 and 9729, so 8320.5. That is multiplied by 30% = 2496.15, and so that much armor is ignored. The effective armor on the target is 7232.85 (9729-2496.15). From a player point of view, the armor penetration rating didn’t ignore the full 30%, but instead ignored 25.66%. (85.5% as effective as expected).''
 
 
''These equations should help you be able to test and verify that Armor Penetration Rating is working correctly and as we designed. The tooltip is not actually inaccurate, as it states: “Enemy armor reduced by up to 30.00%.” That "up to" is key.''
 
 
''Please be sure to test without any other effects which modify the armor calculation (Battle Stance, Sunder Armor, Mace Specialization, etc.) as they may involve other systems that add additional complexity to the calculation.''
 
 
The formula for the Armor Penetration cap can be simplified to ''ArPcap = (935/6)*x + y/3 -44335/6'', where ''x'' is the target level and ''y'' the target armor. Then ''effArmor = targetArmor - ArP * min{ targetArmor, ArPcap}'' as explained above, with the Armor Penetration ''ArP'' of your character. ''ArP'' is given, lately changed in 3.1.2<ref>[http://forums.worldofwarcraft.com/thread.html?topicId=16903658642&sid=1&pageNo=6#106 Ghostcrawler on change of Armor Penetration cap]</ref>, by the formula ''ArP = min{ 1,(Sum ArPcontributions)%}''.
 
 
== Calculating ==
 
 
Calculating the ARP it's done in 2 parts:
 
 
First up - the debuffs. These reduce your target's initial armor. For example, if your target has 10k armor and it gets 20% sunder, its armor would be 8k. The debuffs stack additively, so [[Faerie Fire]] will stack with sunder, totaling a 25% reduction on the target, taking it to 7.5k armor.
 
 
Second, comes the formula GC provided, you grab the armor '''after''' the debuff calculation and to that armor you apply the formula '''(armor + C)/3'''. Using the same example as before, lets say the target is level 80, so C=15232.5, now calculate (7500 + 15232.5)/3 = 7577.5. This makes the target's armor lower than the result, meaning that each 1% removes 75 armor and you are hitting a 0 armor target on the 100% ARP get. The ArP "buffs" (items, stances and such) stack additively too, meaning that 90% ARP on battle stance for a warrior would mean a 100% ARP final.
 
 
== Patch changes ==
 
* {{Patch 4.0.3|bluenote=We are always looking for ways to improve how player stats work. Our long-term plan is to simplify statistics and provide a more clear understanding of their effects on healing and damage dealing. For example, [[Spell Power]] will no longer be its own statistic, and [[Intellect]] will provide its benefits instead. We also plan to make [[Spirit]] the definitive mana-regeneration statistic, in which case we would remove the [[MP5|mana-per-5-seconds]] stat from gear. Confusing stats like [[defense]] and armor penetration will likely go away. Of course, existing items will be updated to reflect these changes. We're also adding a new stat called [[Mastery]], which ties into a character's existing [[talent]]s and will grant a unique function for each class. A rogue, for example, might gain an extra combo point through the Mastery stat.|link=http://www.worldofwarcraft.com/cataclysm/faq/}}
 
* {{Patch 4.0.3|note=Announced at the [[BlizzCon 2009]] Game Systems Panel, armor penetration will no longer be available on gear. However, it will still be part of the game via the [[Mastery]] system.|link=http://static.mmo-champion.com/mmoc/images/news/2009/august/gamesystems_017.jpg|comment=See the source link for an example of how armor penetration will be incorporated into talents in the Cataclysm expansion.}}
 
* {{Patch 3.2.2|note=The amount of armor penetration gained per point of this rating has been reduced by 12%.}}
 
* {{Patch 3.1.2|note=Capped to 100% (or 1232 armor penetration rating)}}
 
* {{Patch 3.1|note=All classes now receive 25% more benefit from Armor Penetration Rating.}}
 
* {{Patch 2.4.1|note=Armor penetration will now display on the character sheet (armor penetration displays in the hit rating section).}}
 
 
== See also ==
 
* [[Damage reduction]]
 
 
== References ==
 
{{reflist}}
 
 
== External links ==
 
<!-- Read http://www.wowwiki.com/WoWWiki:External_links before posting your links here.
 
 
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Links that do not conform to the rules will be DELETED.
 
Repeat violations may result in a BAN.
 
Repeat violations may result in a BAN.
 
Have a nice day. :) -->
 
Have a nice day. :) -->
  +
{{elinks-item|26042}}
{{elink|link=http://forums.worldofwarcraft.com/thread.html?topicId=19717353372&sid=1|type=wowus|desc=Armor pen nerf in 3.2.2 ([http://blue.mmo-champion.com/28/19717353372-armor-pen-nerf-in-322.html archive])}}
 
  +
[[Category:World of Warcraft common quest items]]
{{elink|site=elitistjerks.com|link=http://elitistjerks.com/498690-post35.html|desc=&#91;RAID&#93; Boss armor values, post #35}}
 
{{elink|site=parrydodgespin.com|link=http://www.parrydodgespin.com/2007/11/10/rogues-and-armor-penetration/|desc=Rogues and Armor Penetration}}
 
{{elink|site=rehfeld.us/wow|link=http://rehfeld.us/wow/armor-penetration.html|desc=Armor Penetration Damage Increase Calculator <small>(accuracy not verified)</small>}}
 
[[Category:Combat]]
 
[[Category:Formulas and game mechanics]]
 
[[Category:Game terms]]
 

Revision as of 15:17, 24 October 2010

Inv enchant dustvision100100
  • Oshu'gun Crystal Powder Sample
  • Binds when picked up
  • Unique (100)
  • Item Level 65Disenchants into:
    Not disenchantable
  • "You may turn 10 of these items in to Chief Researcher Amereldine at Halaa if the Horde have control of the base."

Source

This item drops from any of a great number of creatures in Nagrand.

Oshu'gun Crystal Powder Sample as a quest objective

This item, in stacks of 10, is an objective for the following quests:

External links