1.6655 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.6655

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DIN 1.6655

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This page is mainly introduced the 1.6655 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 1.6655,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Professional 1.6655(32NiCrMo12-5,AISI A723,30NiCrMo12,30NCD12) Forged Forging Steel Rings Seamless Rolled Rings.


  • Steel Garde:1.6655
  • Type:Tool Steels & Die Steels
  • Country:Germany
  • Standard:DIN
  • Application:Heat treatable low alloyed NiCrMo steel

Cross Reference Table(Equivalent Materials):

Material Standard Country
32NiCrMo12-5 DIN Germany
A723 AISI USA

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤)
C   0.32
Si   0.28
Mn   0.38
Cr   1.35
Mo   0.35
Ni   2.90

Mechanical Properties

Tensile strength 472~399 σb/MPa
Yield Strength 894 σ 0.2 ≥/MPa
Elongation 53 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 368~809 -
HRC 30 -

Physical Properties

Thermal expansion 95-99 e-6/K
Thermal conductivity 69-55 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 3644-6100 째C
Density 9946-8854 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)
1.6655 Tool Steels & 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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