DIN 21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070

Grades | Structural Steel | 21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070

DIN 21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070

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21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070 Application:high temperature boiler steels for energy industries

Chemical composition(mass fraction)(wt.%) of the 21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070
Elements Min.（≥） Max.（≤） Similar Remarks
C 0.17 0.25
Mn 0.30 0.50
Si 0.30 0.60
P - 0.035
S - 0.035
Cr 1.20 1.50
Ni - 0.60
Mo 1.00 1.20
V 0.25 0.35

Mechanical properties of grade 21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition HBW
782 (≥) 617 (≥) 43 24 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 322

Physical properties of grade 21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070

Property Density
kg/dm3		 Temperature T
°C/F		 Specific heat
J / kgK		 Thermal conductivity
W/mK		 Electric resistance
µΩ·cm
822 (≥) 781 (≥) 24 34 42 Solution and Aging, Annealing, Ausaging, Q+T,etc
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2		 - - -
873 337 445 - - -

21CrMoV5-7, 1.7709, 21CrMoV5-11, 1.8070 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