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70Si7 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 70Si7

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DIN 70Si7

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This page is mainly introduced the 70Si7 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 70Si7,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
70Si7

Steel Garde:70Si7
Type:Special Alloy
Country:Germany
Standard:DIN
Application:Cold working alloy tool steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	693～725	σb/MPa
Yield Strength	178	σ 0.2 ≥/MPa
Elongation	74	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	678～554	-
HRC	30	-

Physical Properties

Thermal expansion	67-47	e-6/K
Thermal conductivity	71-20	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	9530-6257	째C
Density	5275-6861	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)
70Si7 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