Steel Type |
Grades Included |
Comments |
Ferritic |
405,430, 409, 434, 436, 442, 444, 445, 446, 447, 448 |
Hardness up to 22 HRC |
Martensitic |
410, 420 |
Hardness up to 22 HRC |
Martensitic |
F6NM |
Hardness up to 23 HRC |
Martensitic |
S41425 |
Hardness up to 28 HRC |
Austenitic |
201, 202, 302, 304, 304L, 305, 309, 310, 316, 316L, 317, 321, 347, S31254(254SMO), N08904(904L), N08926(1925hMo) |
Solution annealed, no cold work to enhance properties, hardness up to 22 HRC |
Austenitic |
S20910 |
Hardness up to 35 HRC |
Duplex |
S31803 (1.4462), S32520 (UR 52N+), S32750 (2507), S32760 (Zeron 100), S32550(Ferralium 255) |
PREN >30 solution annealed condition, ferrite content 35% to 65%, or 30 to 70% in welds. Note that the general restriction of 28 HRC in previous editions is not found in this latest edition of the standard. There is a specific restriction on HIP'd S31803 to 25HRC. For some applications cold worked material is allowed up to 36HRC |
Precipitation Hardening |
17-4 PH |
33 HRC Age hardening at 620 deg C |
Precipitation Hardening
|
S45000 |
31 HRC Age hardening at 620 deg C |
Precipitation Hardening |
S66286 |
35 HRC |