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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	417～688	σb/MPa
Yield Strength	527	σ 0.2 ≥/MPa
Elongation	96	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	311～276	-
HRC	30	-

Physical Properties

Thermal expansion	46-74	e-6/K
Thermal conductivity	64-85	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	6346-8312	째C
Density	9764-1686	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