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X20 CrMoNiV 11-1-1

Korea KS X20CrMoNiV11-1-1 Seamless steel tubes for pressure purpose-Technical delivery Conditions - Part 2:Unalloyed and alloyed steels with specified elevated temperature properties and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals X20 CrMoNiV 11-1-1 KS D ISO 9329-2 Korea Seamless steel tubes for pressure purpose-Technical delivery Conditions - Part 2:Unalloyed and alloyed steels with specified elevated temperature properties

Chemical composition(mass fraction)(wt.%) of the X20 CrMoNiV 11-1-1

Element Min Max Similar
C 0.1700 0.2300 -
Mn - 1.0000 -
P - 0.0300 -
S - 0.0300 -
Si 0.1500 0.5000 -
Ni 0.3000 0.8000 -
Cr 10.0000 12.5000 -
Mo 0.8000 1.2000 -
V 0.2500 0.3500 -
Al - 0.0200 -

Mechanical Properties of steel grade X20 CrMoNiV 11-1-1

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
583 (≥) 353 (≥) 33 14 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 222

Physical Properties of steel grade X20 CrMoNiV 11-1-1

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
23 - -     0.31 -  
938 166 - 32.3 334   -  
776 - 32 24.2   331 231

Heat Treatment of steel grade X20 CrMoNiV 11-1-1

Heat treated : 1587°C - 1811°C

Technological Curves of steel grade X20 CrMoNiV 11-1-1

Cross Reference Table (Equivalent Grade) of X20 CrMoNiV 11-1-1

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