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AFNOR 20 NCD 2

Description

AFNOR AFNOR 20 NCD 2 Alloy Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Alloy Steel: AFNOR 20 NCD 2

Chemical composition(mass fraction)(wt.%) of the AFNOR 20 NCD 2

Element Weight %
C 0.15-0.20
Mn 0.70-0.90
P 0.035 (max)
S 0.04 (max)
Si 0.15-0.30
Cr 0.40-0.60
Ni 0.40-0.70
Mo 0.15-0.25

Mechanical Properties of steel grade AFNOR 20 NCD 2

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)
351 (≥) 618 (≥) 42 21 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 412

Physical Properties of steel grade AFNOR 20 NCD 2

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
43 - -     0.44 -  
516 799 - 24.3 412   -  
177 - 22 41.2   134 313

Heat Treatment of steel grade AFNOR 20 NCD 2

Heat treated : 1178°C - 1125°C

Technological Curves of steel grade AFNOR 20 NCD 2

Cross Reference Table (Equivalent Grade) of AFNOR 20 NCD 2

Grade Standard Country Application
X20Cr13(AFNOR) AFNOR France Martensite And Precipitation Hardening
1.4439(AFNOR) AFNOR France Austenite
1.4539(AFNOR) AFNOR France Austenite
X6CrNiNb18-10(AFNOR) AFNOR France Austenite
1.4580(AFNOR) AFNOR France Austenite
1.4436(AFNOR) AFNOR France Austenite
1.4438(AFNOR) AFNOR France Austenite
1.4361(AFNOR) AFNOR France Austenite
1.4563(AFNOR) AFNOR France Austenite
1.4537(AFNOR) AFNOR France Austenite
1.4547(AFNOR) AFNOR France Austenite
X1NiCrMoCuN25-20-7(AFNOR) AFNOR France Austenite
X2CrNiN23-4(AFNOR) AFNOR France Austenitic-Ferrite
1.4362(AFNOR) AFNOR France Austenitic-Ferrite
1.4462(AFNOR) AFNOR France Austenitic-Ferrite
1.4507(AFNOR) AFNOR France Austenitic-Ferrite
1.4501(AFNOR) AFNOR France Austenitic-Ferrite
Q195 China Engineering and welding
Q215 China Engineering and welding
Q215 B China Engineering and welding

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