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Martensitic Stainless Steels Chemical Analysis %
(Max. Unless noted Otherwise)

Type C Mn P S Si Cr Ni Mo Other
403 0.15 1.00 0.040 0.030 0.50 11.50 /
13.00



410 0.15 1.00 0.040 0.030 1.00 11.50 /
13.50



414 0.15 1.00 0.040 0.030 1.00 11.50 /
13.50
1.25 /
2.50


416 0.15 1.25 0.060 0.15
(Min)
1.00 12.00 /
14.00

0.60*
416Se 0.15 1.25 0.060 0.060 1.00 12.00 /
14.00


0.15
Se (Min)
420 0.15
(Min)
1.00 0.040 0.030 1.00 12.00 /
14.00



420 F 0.15
(Min)
1.25 0.060 0.025 0.75 11.00 /
13.00
0.50 /
1.00
0.75 /
1.25
0.15 /
0.30 V
422 0.20 /
0.25
1.00 0.025 0.025 0.75 11.00 /
13.00
0.50 /
1.00
0.75 /
1.25
0.15 /
0.30 V
0.75/
1.25 W
431 0.20 1.00 0.040 0.030 1.00 15.00 /
17.00
1.25 /
2.50


440A 0.60 /
0.75
1.00 0.040 0.030 1.00 16.00 /
18.00

0.75
440B 0.75 /
0.95
1.00 0.040 0.030 1.00 16.00 /
18.00

0.75
440C 0.95 /
1.20
1.00 0.040 0.030 1.00 16.00 /
18.00

0.75
*May be added at manufacturer’s option

Nominal Mechanical Properties
(Annealed Sheet unless noted otherwise)

Type Tensile
Strength
Yield Strength
(0.2% offset)
Elongation in
2" (50.80 mm)
%
Hardness
(Rockwell)
Product
Form
ksi MPa ksi MPa
403 70 483 45 310 25 B80
410 70 483 45 310 25 B80
414 120 827 105 724 15 B98
416 75 517 40 276 30 B82 (Bar)
416Se 75 517 40 276 30 B82 (Bar)
420 95 655 50 345 25 B92 (Bar)
420F 95 655 55 379 22 220(Brinell) (Bar)
422* 145 1000 125 862 18 320(Brinell) (Bar)
431 125 862 95 655 20 C24 (Bar)
440A 105 724 60 414 20 B95 (Bar)
440B 107 738 62 427 18 B96 (Bar)
440C 110 758 65 448 14 B97 (Bar)
* Hardened and Tempered