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 434~081 σb/MPa
Yield Strength 528 σ 0.2 ≥/MPa
Elongation 65 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 323~762 -
HRC 30 -

Physical Properties

Thermal expansion 49-29 e-6/K
Thermal conductivity 93-82 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 3474-9442 째C
Density 2229-6775 kg/m3
Resistivity 0.50-0.60 Ohm.mm2/m
     

Heat Treatment Regime

Annealing

Quenching

Tempering

Normalizing

Q & T

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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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