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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	684～816	σb/MPa
Yield Strength	825	σ 0.2 ≥/MPa
Elongation	03	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	678～897	-
HRC	30	-

Physical Properties

Thermal expansion	38-28	e-6/K
Thermal conductivity	39-68	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	2917-3803	째C
Density	9375-5540	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