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45H chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 45H

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GBT 45H

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This page is mainly introduced the 45H chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 45H,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
45H

Steel Garde:45H
Type:Special Alloy
Country:China
Standard:GBT
Application:China structural steel and alloy steel

Relevant products:

4145H Hollow Bar

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
CPM Rex 45HS	AISI	USA
5145H	AS	Australia
SCM445H	CNS	China

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	825～776	σb/MPa
Yield Strength	907	σ 0.2 ≥/MPa
Elongation	15	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	456～654	-
HRC	30	-

Physical Properties

Thermal expansion	75-19	e-6/K
Thermal conductivity	31-60	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	9126-4330	째C
Density	1727-4135	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)
45H 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