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1.6957 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.6957

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DIN 1.6957

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This page is mainly introduced the 1.6957 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.6957,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Steels for larger forgings for components in turbine and generator installations

Steel Garde:1.6957
Type:Tool Die Steels
Country:Germany
Standard:DIN
Standard Number:

ITEM Standard Number Descriptions

1 SEW 555 Steels for larger forgings for components in turbine and generator installations
Metallographic Structure:Austenite
Application:Steels for larger forgings for components in turbine and generator installations

ITEM	Standard Number	Descriptions
1	SEW 555	Steels for larger forgings for components in turbine and generator installations

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
26NiCrMoV14-5	SEW	Germany

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.28
Si		0.25
Mn		0.40
P		0.010
S		0.010
Cr	1.40	1.80
Ni	3.40	3.80
Mo	0.30	0.45
V		0.15
Al		0.025

Mechanical Properties

Tensile strength	259～070	σb/MPa
Yield Strength	372	σ 0.2 ≥/MPa
Elongation	66	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	052～490	-
HRC	30	-

Physical Properties

Thermal expansion	17-84	e-6/K
Thermal conductivity	42-96	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	8092-6639	째C
Density	2096-6228	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)
1.6957 Tool Die Steels	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