Stainless Steel 409 Forgings
409, S40900
Grade 409 steels are also available in highly stabilized forms, such as grades S40930, S40920 and S40910. The stability of these grades is provided by the presence of niobium, titanium, or both, in the composition of steels.
Grade 409 stainless steel is a Ferritic steel that offers good mechanical properties and high-temperature corrosion resistance. It is commonly considered as a chromium stainless steel, with applications in exhaust systems of automobiles and applications that demand weldability.
Stainless Steel 409 Forgings Properties
UNS S40900 Forgings Chemical Requirements
| Grade | C | Mn | Si | P | S | Cr | Ni | Ti | |
|---|---|---|---|---|---|---|---|---|---|
| 409 | min. | - | - | - | - | - | 10.5 | - | 6x C |
| max. | 0.08 | 1.00 | 1.00 | 0.045 | 0.045 | 11.75 | 0.5 | 0.75 | |
UNS S40900 Forgings Mechanical Requirements
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
|---|---|---|---|---|---|
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 409 | 450 | 240 | 25 | 75 | 131 |