1.2709 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.2709

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DIN 1.2709

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This page is mainly introduced the 1.2709 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.2709,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
High alloyed NiCoMo steel

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C   0.03
Si   0.10
Mn   0.15
P   0.010
S   0.010
Cr   0.25
Mo 4.50  5.20
V  
Ni 17.00  19.00
Co 8.50  10.00
Ti 0.80  1.20

Mechanical Properties

Tensile strength 841~518 σb/MPa
Yield Strength 291 σ 0.2 ≥/MPa
Elongation 68 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 856~859 -
HRC 30 -

Physical Properties

Thermal expansion 54-48 e-6/K
Thermal conductivity 84-69 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 3838-6921 째C
Density 0507-4942 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)
1.2709 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

Technical specification/standard for download

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