WARFRAME Wiki
Register
Advertisement
WARFRAME Wiki

Steel Fiber increases the armor of a Warframe.

Stats

Rank Effect Cost Conclave
0 10% 4 C10
1 20% 5 C10
2 30% 6 C13
3 40% 7 C17
4 50% 8 C20
5 60% 9 C23
6 70% 10 C27
7 80% 11 C30
8 90% 12 C33
9 100% 13 C37
10 110% 14 C40
Armor totals for Rank 30 Warframes
Base 0 1 2 3 4 5 6 7 8 9 10
15
95%
16.5
95%
18
94%
19.5
94%
21
93%
22.5
93%
24
93%
25.5
92%
27
92%
28.5
91%
30
91%
31.5
90%
50
86%
55
85%
60
83%
65
82%
70 81% 75
80%
80
79%
85 78% 90
77%
95
76%
100
75%
105
74%
65
82%
71.5
81%
78
79%
84.5 78% 91
77%
97.5
75%
104
74%
110.5
73%
117 72% 123.5
71%
130
70%
136.5
69%
155 66% 170.5
64%
186
62%
201.5
60%
217
58%
232.5
56%
248
55%
263.5
53%
279
52%
294.5
50%
310
49%
325.5 48%
190
61%
209
59%
228
57%
247
55%
266
53%
285
51%
304
50%
323
48%
342
47%
361
45%
380
44%
399
43%
600
33%
660
31%
720 29% 780 28% 840 26% 900 25% 960
24%
1020 23% 1080 22% 1140 21% 1200 20% 1260 19%

Note : those percentage values represent how much damage you take, starting at a maximum of 100%.

Calculations

Armor Values

Steel Fiber gives additional Armor based on the frame's Base Armor.

The Total Armor can be calculated by the following formula:

Total Armor = BaseArmor * (1 + SteelFiberPercent)

Example - 190 Base Armor with 110% Steel Fiber would be calculated as follows:

Total Armor = 190 * (1 + 1.10) = 399 Total Armor

Damage Mitigation

Damage Mitigation is the amount off the total damage that armor reduces, and is calculated as:

 Damage Mitigation = Total Armor / (Total Armor + 300)

The following table shows the net Damage Mitigation percentage values provided by armor for different key base armors that various frames have. 

Passthrough Damage from Total Armor (Base + Steel Fiber)
Mod Stats Base Armor Value
Mod % Cost 15 50 65 155 190 600
0% 0 4.76% 14.29% 17.81% 34.07% 38.78% 66.67%
10% 4 5.21% 15.49% 19.25% 36.24% 41.06% 68.75%
20% 5 5.66% 16.67% 20.63% 38.27% 43.18% 70.59%
30% 6 6.1% 17.81% 21.98% 40.48% 45.16% 72.22%
40% 7 6.54% 18.92% 23.27% 41.97% 47.00% 73.68%
50% 8 6.98% 20.00% 24.53% 43.66% 48.72% 75.00%
60% 9 7.41% 21.05% 25.74% 45.26% 50.33% 76.19%
70% 10 7.83% 22.08% 26.92% 46.76% 51.85% 77.27%
80% 11 8.26% 23.08% 28.06% 48.19% 53.27% 78.26%
90% 12 8.68% 24.05% 29.16% 49.54% 54.61% 79.17%
100% 13 9.09% 25.00% 30.23% 50.82% 55.88% 80.00%
110% 14 9.5% 25.93% 31.27% 52.04% 57.08% 80.77%

Effective Health

Higher armor values can be thought of as increasing your effective health in relation to incoming damage.  However, this would only apply to damage types that do not ignore armor.  Because "effective health" more literally translates as "the maximum amount of damage you can take", if we simply set your "Total Health" equal to your "Incoming Damage" after Damage Mitigation, and then solve for the Incoming damage alone, we can determine your Effective HP.

Total Health = Incoming Damage * Damage Mitigation %
Total Health / Damage Mitigation % = Incoming Damage

As Armor Increases, Damage Mitigation values decrease, and therefore Effective HP drastically increases. Below are two tables with examples of how Effective HP increases with armor. All values are rounded to the nearest integer.

Effective HP (assumed base HP of 100)
Mod Stats Base Armor Value
Mod % Cost 15 50 65 155 190 600
0% 0 105 117 122 152 163 300
10% 4 106 118 124 157 170 320
20% 5 106 120 126 162 176 340
30% 6 107 122 128 167 182 360
40% 7 107 123 130 172 189 380
50% 8 108 125 133 178 195 400
60% 9 108 127 135 183 201 420
70% 10 109 128 137 188 208 440
80% 11 109 130 139 193 214 460
90% 12 110 132 141 198 220 480
100% 13 110 133 143 203 227 500
110% 14 111 135 146 209 233 520
Effective HP (assumed base HP of 300)
Mod Stats Base Armor Value
Mod % Cost 15 50 65 155 190 600
0% 0 315 350 365 455 490 900
10% 4 317 355 372 471 509 960
20% 5 318 360 378 486 528 1020
30% 6 320 365 385 502 547 1080
40% 7 321 370 391 517 566 1140
50% 8 323 375 398 533 585 1200
60% 9 324 380 404 548 604 1260
70% 10 326 385 411 564 623 1320
80% 11 327 390 417 579 642 1380
90% 12 329 395 424 595 661 1440
100% 13 330 400 430 610 680 1500
110% 14 332 405 437 626 699 1560

Notes

  • Armor (and thus Steel Fiber) will only mitigate damage to Health.

Tips

  • This mod is generally more effective on frames with 100 armor or greater.
    • Steel Fiber is most effective when used on Valkyr as she has 600 armor, the highest value of any Warframe.

Trivia

  • The mod image is actually that of Rhino's Iron Skin prior to Update 9.5, which updated the effect to its current appearance.

Gallery

See also

Advertisement