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XM-31 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of XM-31

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UNS XM-31

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This page is mainly introduced the XM-31 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of XM-31,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
S21400

Steel Garde:XM-31
Type:Stainless Steels
Country:USA
Standard:UNS
Standard Number:

ITEM Standard Number Descriptions

1 SAE J 405 (1998) Chemical compositions of SAE wrought stainless steels
Metallographic Structure:Austenite
Application:Chemical compositions of SAE wrought stainless steels

ITEM	Standard Number	Descriptions
1	SAE J 405 (1998)	Chemical compositions of SAE wrought stainless steels

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
S21400	AISI	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	876～292	σb/MPa
Yield Strength	662	σ 0.2 ≥/MPa
Elongation	71	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	871～289	-
HRC	30	-

Physical Properties

Thermal expansion	35-05	e-6/K
Thermal conductivity	58-66	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	3647-6203	째C
Density	3554-6588	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)
XM-31 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