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SUM31 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUM31

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CNS SUM31

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This page is mainly introduced the SUM31 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUM31,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
SUM31

Steel Garde:SUM31
Type:Special Alloy
Country:China
Standard:CNS
Application:China Taiwan Structural steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
SUM31L	CNS	China

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	612～705	σb/MPa
Yield Strength	960	σ 0.2 ≥/MPa
Elongation	38	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	647～642	-
HRC	30	-

Physical Properties

Thermal expansion	17-37	e-6/K
Thermal conductivity	96-37	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	8224-1266	째C
Density	1823-5371	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)
SUM31 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