431
(UNS S43100) A martensitic stainless steel designed to provide improved corrosion resistance and toughness in a quench-hardenable stainless steel. Has excellent impact strength at high hardness levels.
Chemistry
| Element |
C |
Mn |
P |
S |
Si |
Cr |
Ni |
| 431 |
0.20% max. |
1.00% max. |
0.04% max. |
0.03% max. |
1.00% max. |
15.00-17.00% |
1.25-2.50% |
Physical Constants
| Density | 0.280 lbs/in3 |
| Density | 7.75 g/cm3 |
Heating
| Forging | 2100-2200ºF |
| Annealing | 1200-1250ºF cool in air |
| Tempering | 700-1050ºF cool in air |
| Austenize | 1800-1950ºF then oil quench |
Viking Forging Parameters
| Sleeves | 24" O.D. X 8" long | 500 lbs. |
| Disks | 24" Dia. max | 500 lbs. |
| Round Bar | 9.5" Dia. X 96" long | 2000 lbs. |
| Square/Rectangular Bar | 9.5" Square max. X 96" long | 2000 lbs. |
| Blocks | 11.5" X 11.5" X 11.5" | 500 lbs. |
| Shafts | 9.5" Dia. max X 96" long | 2000 lbs. |
