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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.
S21400

Steel Garde:S21400
Type:Stainless Steels
Country:USA
Standard:AISI
Metallographic Structure:Austenite
Application:Chemical compositions of SAE wrought stainless steels

Cross Reference Table(Equivalent Materials):

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

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.12
Si	0.30	1.00
Mn	14.5	16.0
P		0.045
S		0.03
Cr	17.0	18.5
Ni		1.00
N		0.35

Mechanical Properties

Tensile strength	045～276	σb/MPa
Yield Strength	987	σ 0.2 ≥/MPa
Elongation	94	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	673～227	-
HRC	30	-

Physical Properties

Thermal expansion	21-17	e-6/K
Thermal conductivity	31-85	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	6172-6201	째C
Density	1994-6179	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