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8740 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 8740

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AS 8740

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This page is mainly introduced the 8740 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 8740,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
8740

Steel Garde:8740
Type:Special Alloy
Country:Australia
Standard:AS
Application:Australia Structural steel

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
8740H	AS	Australia

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	692～635	σb/MPa
Yield Strength	874	σ 0.2 ≥/MPa
Elongation	31	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	178～164	-
HRC	30	-

Physical Properties

Thermal expansion	06-01	e-6/K
Thermal conductivity	18-62	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	8593-4589	째C
Density	3187-2519	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)
8740 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