Alloy 431-SS Weldability

Welding of Grade 431 Stainless Steels is very hard because of the chances of cracking. It is recommended for pre-heat the materials to 200 - 300°C since welding and carry out post-weld heat treatment at 650°C. Welding can be easily performed by utilizing grade 410 filler rod, yet ductile welds can accomplish utilizing grades 308L, 309 or 310 steels.

Applications

• Laboratory equipment
• Marine systems
• Beater bars
• Pump and propeller shafts
• Nuts and bolts

Chemical Composition %

Grade	C	Si	P	S	Cr	Mn	Ni	Fe
431	0.20 max	1.0 max	0.040 max	0.030 max	15.0 - 17.0	1.0 max	1.25 - 2.50	Remainder