MACHINING:-
Easier to machine than the standard austenitic grades such as 304.
Still a tendency for galling and pick-up on the cutting tool.
Tubes 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.
| C | Mn | P | S | Si | Ni | Cr | Fe |
| 0.08 | 1.00 Max. | 0.040 Max. | 0.030 Max. | 1.00 Max. | 0.75 Max | 16.0 – 18.0 | Balance |
Heat Resistance
Stainless steel grade 430 is capable of resisting oxidation up to 870°C (1598°F) in intermittent usage, and up to 815°C (1499°F) in continuous usage. At room temperature, it has the tendency to become brittle, especially when it has been heated for a long time in the 400-600°C (752-1112°F) range. This issue can be overcome with annealing.
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