ASTM A240 Grade 302 Stainless Steel Wire Hardening

ASTM A240 Grade 302 Stainless Steel Wire is widely found in strip and wire forms. Grade 302 Stainless Steel Wire is a standard specification for chromium and chromium-nickel stainless steelsheet, plate, and strip used for pressure vessels and for general applications. Grade 302 stainless steel wire is widely used in the stamping, spinning and wire forming industry. This alloy is also used to form springs, washers, screens and cables.

ASTM A240 Grade 302 Wire Chemical Composition

Grade	The Element Max (%)
	C	Mn	P	S	Si	Cr	Ni
ASTM A240 302	0.15	2.00	0.045	0.030	0.75	17.0-19.0	8.0-10
	Mo	N	Cu
		0.10

Mechanical Property of ASTM A240 Grade 302 Stainless Steel

Grade	ASTM A240 302 Mechanical Property
	Yield	Tensile	Elongation	Hardness, max
ASTM A240 302	Min Mpa	Mpa	Min %	Brinell	Rockwell B
	205	515	40%	201	92

Equivalent steel grade of TP302 Wire

Japan	USA	Korea	Australia	UK	Germany	EU	France
JIS	UNS	KS	AS	BS	DIN 17440	EN	NFA35-572
-	S30200	-	-	302S25	X12CrNi188	-	Z10CN18.09

Grade 302 Stainless Steel Wire Hot Working       
Uniform heating to 2100 F(1149 C) will allow Grade 302 stainless steel to be forged, upset and headed successfully. Do not work 302 below 1700 F (927 C).
Grade 302 Stainless Steel Wire Cold Working   
Cold working will dramatically increase the hardness of this material, however it is quite ductile and may readily be drawn, spun and upset. Any cold work will cause this alloy to become magnetic.
Grade 302 Stainless Steel Wire Annealing   
1850-2050 F (1010-1121 C) with cooling at a rapid rate to avoid the precipitation of chromium carbides.
Grade 302 Stainless Steel Wire Hardening   
This alloy does not respond to heat treatment.

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