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SM55 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SM55

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SM55

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This page is mainly introduced the SM55 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SM55,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
SM55

Steel Garde:SM55
Type:Special Alloy
Country:China
Application:Plastic mould with flat steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	781～886	σb/MPa
Yield Strength	427	σ 0.2 ≥/MPa
Elongation	98	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	138～649	-
HRC	30	-

Physical Properties

Thermal expansion	36-48	e-6/K
Thermal conductivity	95-95	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	5633-4151	째C
Density	6388-4444	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)
SM55 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