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S21400 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of S21400

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AISI S21400

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This page is mainly introduced the S21400 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of S21400,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.

Austenitic Chromium Manganese Stainless Steel

Steel Garde:S21400
Type:Stainless Steels
Country:USA
Standard:AISI
Metallographic Structure:Austenite
Application:Austenitic Chromium Manganese Stainless Steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
A 240 S21400	SAE	USA
A 580 S21400	SAE	USA
SA-240 S21400	AMS	USA
XM-31	UNS	USA
S21400	AISI	USA

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.12
Mn	14.50	16.00
Si	0.30	1.00
P		0.045
S		0.03
Cr	17.00	18.50
Ni		0.75
Mo
N		0.35

Mechanical Properties

Tensile strength	593～752	σb/MPa
Yield Strength	442	σ 0.2 ≥/MPa
Elongation	83	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	443～645	-
HRC	30	-

Physical Properties

Thermal expansion	99-70	e-6/K
Thermal conductivity	30-32	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	6315-2506	째C
Density	8323-3962	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)
S21400 Stainless Steels	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