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70A chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 70A

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CSA 70A

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This page is mainly introduced the 70A chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 70A,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
70A

Steel Garde:70A
Type:Special Alloy
Country:Canada
Standard:CSA
Application:Canada Engineering and steel structure

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
OLC70A	STAS/SR	Romania
70AT	CSA	Canada

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	615～624	σb/MPa
Yield Strength	848	σ 0.2 ≥/MPa
Elongation	38	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	781～140	-
HRC	30	-

Physical Properties

Thermal expansion	52-38	e-6/K
Thermal conductivity	66-12	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	4043-0226	째C
Density	9220-3394	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)
70A 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