18 CN 8

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France AFNOR NF 18CN8 Iron and steel. Case hardened alloy steels for solid highly- stressed mechanical parts. Grades. Semi-finished products and bars and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 18CN8 / 18 CN 8

Category	Grade	Standard	Region/Area	Standard Content
Metals	18 CN 8	NF A35-567	France	Iron and steel. Case hardened alloy steels for solid highly- stressed mechanical parts. Grades. Semi-finished products and bars

Chemical composition(mass fraction)(wt.%) of the 18 CN 8

Element	Min	Max	Similar

The data is being updated,

Mechanical Properties of steel grade 18 CN 8

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)
866 (≥)	546 (≥)	31	43	33	Solution and Aging, Annealing, Ausaging, Q+T,etc	444

Physical Properties of steel grade 18 CN 8

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
24	-	-			0.42	-
851	433	-	34.3	132		-
891	-	44	22.2			243	234

Heat Treatment of steel grade 18 CN 8

Heat treated : 1958°C - 1984°C

Technological Curves of steel grade 18 CN 8

No Curve

Cross Reference Table (Equivalent Grade) of 18 CN 8

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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