Grade 430 is a ferritic, straight chromium, non-hardenable grade, combining good corrosion resistance and formability characteristics with useful mechanical properties. Its ability to resist nitric acid attack permits its use in specific chemical applications but automotive trim and appliance components represents its largest fields of application.
STAINLESS STEEL 430 ROUND BARS COMPOSITION:
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
|---|---|---|---|---|---|---|---|---|---|---|
430 | min. max. | - 0.12 | - 1.00 | - 1.00 | - 0.040 | - 0.030 | 16.0 18.0 | - | - 0.75 | - |
430F | min. max. | - 0.12 | - 1.25 | - 1.00 | - 0.06 | 0.15 - | 16.0 18.0 | - | - | - |
STAINLESS STEEL 430 ROUND BARS MECHANICAL PROPERTIES:
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 | ||||
430 | 450 | 205 | 22 | 89 | 183 |
430F | 552 typical | 379 typical | 25 typical | - | 262 |
STAINLESS STEEL 430 ROUND BARS MACHINING:
Easier to machine than the standard austenitic grades such as 304.
Still a tendency for galling and pick-up on the cutting tool.
Bars that have been lightly drawn are easier to machine than those in the annealed condition.
Grade 430F, the free machining version of 430, is very much easier to machine.
STAINLESS STEEL 430 ROUND BARS FABRICATION:
Lower work hardening rate makes bending and forming somewhat easier than for grade 304
Lower ductility restricts very severe operations.
Severe bends should be made with the bend axis at right angles to the rolling direction.
Severe cold heading of 430 wire is possible.
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