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DIN 1.2721 Details

DIN 1.2721 Standard Download

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1.2721 Application:Alloyed NiCr steel

Category Type Grade Designations
Grades Tool Die Steels 1.2721 Germany - DIN ,

Chemical composition(wt.%) of 1.2721 grade:

Elements Min.（≥） Max.（≤） Similar Remarks
C 0.45 0.55
Si 0.15 0.35
Mn 0.40 0.60
P - 0.035
S - 0.035
Cr 0.90 1.20
Mo - -
V - -
Ni 3.00 3.50
Alloyed NiCr steel

Mechanical properties of grade 1.2721

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)
466 (≥) 435 (≥) 24 31 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 411

Physical properties of grade 1.2721

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
735 (≥) 871 (≥) 42 43 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 312
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
128 191 697

1.2721 - Form of Supply

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
1.2721 DIN Germany
Alloyed NiCr steel

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