CF 420 D

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France AFNOR NF CF420D Railway rolling stock. Recommended steels for rolling stock construction. XI : weldable high yield strength micro-alloyed steels with atmospheric corrosion resistance for bodyworks and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: CF420D / CF 420 D

Category	Grade	Standard	Region/Area	Standard Content
Metals	CF 420 D	NF F 80-111	France	Railway rolling stock. Recommended steels for rolling stock construction. XI : weldable high yield strength micro-alloyed steels with atmospheric corrosion resistance for bodyworks

Chemical composition(mass fraction)(wt.%) of the CF 420 D

Element	Min	Max	Similar
V	0.0100	0.0800	-
Ti	0.0100	0.1000	-
Si	-	0.4000	-
S	-	0.0100	-
P	-	0.0250	-
Nb	0.0100	0.0600	-
Mn	-	1.6000	-
C	-	0.1000	-
Al	0.0100	0.0800	-

Mechanical Properties of steel grade CF 420 D

Yield R_p0.2 (MPa)	Tensile R_m (MPa)	Impact KV/Ku (J)	Elongation A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
198 (≥)	759 (≥)	34	23	24	Solution and Aging, Annealing, Ausaging, Q+T,etc	322

Physical Properties of steel grade CF 420 D

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
14	-	-			0.42	-
327	782	-	21.3	313		-
983	-	23	44.2			241	423

Heat Treatment of steel grade CF 420 D

Heat treated : 1829°C - 1642°C

Technological Curves of steel grade CF 420 D

No Curve

Cross Reference Table (Equivalent Grade) of CF 420 D

Grade	Standard	Country	Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1

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