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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	396～203	σb/MPa
Yield Strength	982	σ 0.2 ≥/MPa
Elongation	45	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	989～565	-
HRC	30	-

Physical Properties

Thermal expansion	56-26	e-6/K
Thermal conductivity	28-87	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	4647-0027	째C
Density	3835-3870	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