430 Pipe Stainless Steels

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.

C	Mn	P	S	Si	Cr	Fe
0.12 Max.	1.00 Max.	0.040 Max.	0.030 Max.	1.00 Max.	16.0 – 18.0	Balance

Heat Treatment

Solution annealing can be performed by heating stainless steel grade 430 to 815 - 845°C (1499-1553°F). Then it has to be slow furnace cooled to 600°C (1112°F) and followed by air-cooling in a quick manner - as slow cooling between 540 and 400°C (1004 and 752°F) tends to cause embrittlement.

For sub-critical annealing, heating should be performed to 760-815°C (1400-1499°F), followed by air-cooling or water quenching.

This stainless steel cannot be hardened by thermal treatment.

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