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STS321 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS321

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KS STS321

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This page is mainly introduced the STS321 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS321,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
STS321

Steel Garde:STS321
Type:Special Alloy
Country:Korea
Standard:KS
Application:Austenitic Steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
STS321	KS	Korea
STS321TKA	KS	Korea

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	360～576	σb/MPa
Yield Strength	423	σ 0.2 ≥/MPa
Elongation	58	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	246～601	-
HRC	30	-

Physical Properties

Thermal expansion	66-33	e-6/K
Thermal conductivity	73-39	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	8502-4176	째C
Density	6803-1503	kg/m³
Resistivity	0.50-0.60	Ohm.mm²/m

Heat Treatment Regime

Annealing	Quenching	Tempering	Normalizing	Q & T
√	√	√	√	√

Size Availability

Steel Grade	Specification	Processing range(mm)
STS321 Special Alloy	Round Bar and Hollow Bar	Φ1 to Φ2000
	Square and Flat Steel	Φ10 to Φ100
	Plate and Sheet	0.08-800(Thickness)10-1500(Width)Length
	Tube or Pipe	OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
	Coil and Strip Steel	THK:0.1mm Width:1500mm
	Forged	Ring/Cylindrical/Disk