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DIN X21CrMoV12-1 Details

X21CrMoV12-1 Application:Steels for larger forgings for components in turbine and generator installations

Category Type Grade Microstructure Designations
Grades Stainless Steels X21CrMoV12-1 Martensite Germany - DIN , SEW 555 - Steels for larger forgings for components in turbine and generator installations

Chemical composition(wt.%) of X21CrMoV12-1 grade: SEW 555

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.20 0.26
Si - 0.50
Mn 0.30 0.80
P - 0.025
S - 0.020
Cr 11.00 12.50
Mo 0.80 1.20
Ni 0.30 0.80
V 0.25 0.35
Steels for larger forgings for components in turbine and generator installations of X21CrMoV12-1

Mechanical properties of grade X21CrMoV12-1 SEW 555

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)
955 (≥) 212 (≥) 34 32 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 414

Physical properties of grade X21CrMoV12-1 SEW 555

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
726 (≥) 762 (≥) 24 42 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 133
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
594 719 872

X21CrMoV12-1 - 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
1.4926 DIN Germany
Steels for larger forgings for components in turbine and generator installations
X21CrMoV12-1 DIN Germany
Steels for larger forgings for components in turbine and generator installations

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