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Grade31 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Grade31

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AISI Grade31

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This page is mainly introduced the Grade31 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Grade31,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Grade31

Steel Garde:Grade31
Type:Special Alloy
Country:USA
Standard:AISI
Application:

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	531～159	σb/MPa
Yield Strength	653	σ 0.2 ≥/MPa
Elongation	49	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	820～976	-
HRC	30	-

Physical Properties

Thermal expansion	16-28	e-6/K
Thermal conductivity	65-20	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	9970-6411	째C
Density	3874-7218	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)
Grade31 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