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DIN 1.6655 Details

Professional 1.6655(32NiCrMo12-5,AISI A723,30NiCrMo12,30NCD12) Forged Forging Steel Rings Seamless Rolled Rings.


DIN 1.6655 Standard Download

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1.6655 Application:Heat treatable low alloyed NiCrMo steel
Category Type Grade Designations
Grades Tool Steels & Die Steels 1.6655 Germany - DIN ,
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 of grade 1.6655
Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
237 (≥) 169 (≥) 31 11 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 213
Physical properties of grade 1.6655
Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
747 (≥) 133 (≥) 43 34 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 222
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
268 728 987
1.6655 Range of products
Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
1.6655 DIN Germany
Heat treatable low alloyed NiCrMo steel
32NiCrMo12-5 DIN Germany
Heat treatable low alloyed NiCrMo steel
A723 AISI USA
Heat treatable low alloyed NiCrMo steel

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