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321 High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:High Alloy: 321

Category	Type	Steel Grade
Steel Grades	High Alloy	321
		310S
		S31008
		314
		S31400
		316
		S31600
		316L
		S31603
		317
		S31700

Chemical composition(mass fraction)(wt.%) of the 321

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.08	1	2	0.045	0.03	17-19	9-12
Mo	Al	Cu	Nb	Ti	V	Ce
				﹥5*C~0.6
N	Co	Pb	B	Other

Mechanical Properties of steel grade 321

Yield R_p0.2 (MPa)	Tensile R_m (MPa)	Impact KV/Ku (J)	Elongation A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
825 (≥)	696 (≥)	21	41	41	Solution and Aging, Annealing, Ausaging, Q+T,etc	413

Physical Properties of steel grade 321

Temperature (°C)	Modulus of elasticity (GPa)	Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and	Thermal conductivity (W/m·°C)	Specific thermal capacity (J/kg·°C)	Specific electrical resistivity (Ω mm²/m)	Density (kg/dm³)	Poisson’s coefficient, ν
43	-	-			0.24	-
871	339	-	12.3	442		-
442	-	12	32.2			421	434

Heat Treatment of steel grade 321

Heat treated : 1647°C - 1576°C

Technological Curves of steel grade 321

No Curve

Cross Reference Table (Equivalent Grade) of 321

Grade	Standard	Country	Application
SUS321FB	JIS	Japan	austenitic special steel
SUS321HFB	JIS	Japan	austenitic special steel
SUS321LTP	JIS	Japan	austenitic special steel
SUS321HTP	JIS	Japan	austenitic special steel
SUS321TKA	JIS	Japan	ferritic stainless steel
321S31			austenitic special steel
321S51(1010)			austenitic special steel
321S51(1105)			austenitic special steel
321S31			austenitic special steel
A35-586 321F20	AFNOR	France	Resistant to high boron steel(NF A 36-580(1983))
STS321			Austenitic Steel
STS321			Austenitic Steel
CNS 321		China	CNS standard stainless steel austenite size
STS321TKA			KS standard mechanical and structure with stainless steel pipe(KS D3536-1992)
SS 2321	SS	Sweden	Swedish SS standard stainless steel and heat resistant steel
S32168	UNS	USA	Stainless steel bars
S32169		China	Stainless steel bars
E8321			Spain structural alloy steel
411321			The Czech republic Structural steel
11321			The Czech republic Structural steel

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