430F stainless steel is a ferritic, high-alloy steels. Due to the presence of large amounts of chromium in the range of 4 to 30%, they have high corrosion resistance than other steels. Stainless steels are classified into martensitic, ferritic and austenitic based on their crystalline structure. However, stainless steels present in the form of a combination of martensitic and austenitic steels are known as precipitation-hardened steels.straight chromium alloy is similar to 430 stainless with increased sulfur to dramatically improve machinability This alloy does not form as easily as standard 430 due to the sulfur but still has moderate ductility. 430F is often used as gears, fasteners, or solenoids within various industries.
AOD
| Grade | Chemical Composition WT % | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| C | Mn | Si | P | S | Cr | Ni | Mo | |||
| A582 430F | Max 0.12 | Max 1.25 | Max 1.00 | Max 0.04 | Min 0.15 | 16.0 - 18.0 | ||||
| X10CrS17, 1.4104 | Max 0.1 | Max 0.8 | Max 0.8 | Max 0.04 | Min 0.15 | 16.0 - 18.0 | Max 0.60 | |||
| AFNOR Z 10 CF 17 | Max 0.12 | Max 1.0 | Max 1.0 | Max 0.04 | Min 0.15 | 16.0 - 18.0 | ||||
| SS 2383 | Max 0.08 | Max 0.75 | Max 0.75 | Max 0.04 | Min 0.15 | 16.0 - 17.5 | ||||
| SUS 430F | Max 0.12 | Max 1.25 | Max 1.0 | Max 0.06 | Min 0.15 | 16.0 - 18.0 | Max 0.60 | Max 0.60 | ||
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength, ultimate | 550 MPa | 79800 psi |
| Modulus of elasticity | 200 GPa | 29000 ksi |
| Poisson’s ratio | 0.27 – 0.30 | 0.27 – 0.30 |
| Elongation at break (in 50 mm) | 25% | 25% |
| Hardness, Brinell | 170 | 170 |
| Hardness, Knoop (converted from Brinell Hardness) | 189 | 189 |
| Hardness, Rockwell B (converted from Brinell Hardness) | 86 | 86 |
| Hardness, Vickers (converted from Brinell Hardness) | 178 | 178 |
430F stainless steel can be hot worked by initially bringing the material to 816°C (1500°F) and then slowly to 1066 to 1149°C (1950 to 2100°F).
430F stainless steel can withstand only moderate cold forming.
| Properties | Metric | Imperial |
|---|---|---|
| Density | 7.80 g/Cm³ | 0.282 lb/in³ |
| Melting point | 1482°C | 2700°F |
430F stainless steel can be annealed at temperature ranging from 677 to 760°C (1250 to 1400°F) and then air cooled.
430F stainless steel cannot be welded due to its high sulfur content. If necessary, welding can be performed using low heat settings and AWS E/ER430 filler metal.
Machining of grade 430F stainless steel can be done with good feeds and speeds.
Steel grade
Special steel