Alloy Steel NAS631

haracteristics of NAS 631 Alloy Steel

・NAS 631 can be further hardened by cold rolling or sub-zero treatment to transform to martensite, or by precipitation hardening of Al compound.

・Hardening after forming makes further strengthened parts.

・NAS 631 is comparable to 17-7PH (17%Cr-7%Ni precipitation hardened) stainless steel.

Chemical Composition NAS 631 Alloy Steel(%)

-	C	Si	Mn	P	S	Ni	Cr	Al
Specification	≦0.09	≦1.00	≦1.00	≦0.040	≦0.030	6.50～ 7.75	16.00～ 18.00	0.75～ 1.50
Example	0.081	0.30	0.92	0.025	0.0006	7.24	16.31	1.06

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