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55Si2Mn chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 55Si2Mn

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GBT 55Si2Mn

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This page is mainly introduced the 55Si2Mn chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 55Si2Mn,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
55Si2Mn

Steel Garde:55Si2Mn
Type:Special Alloy
Country:China
Standard:GBT
Application:China structural steel and alloy steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
55Si2MnB	GBT	China

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	696～927	σb/MPa
Yield Strength	640	σ 0.2 ≥/MPa
Elongation	41	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	906～805	-
HRC	30	-

Physical Properties

Thermal expansion	52-60	e-6/K
Thermal conductivity	48-28	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	0006-0010	째C
Density	7558-3164	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)
55Si2Mn 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