Available 24/7 at contact@steel-grades.com

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

Mechanical Properties of steel grade 18 CN 8

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)
193 (≥) 753 (≥) 11 32 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

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
21 - -     0.34 -  
619 813 - 34.3 243   -  
791 - 34 31.2   224 213

Heat Treatment of steel grade 18 CN 8

Heat treated : 1423°C - 1716°C

Technological Curves of steel grade 18 CN 8

Cross Reference Table (Equivalent Grade) of 18 CN 8

Available Suppliers

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

Rfq.: sales@longhaisteel.com
  • Do you supply this 18 CN 8?
  • List your company on S&G now? Join
  • Non-paying users only
Sidebar RFQs Menu My Account
Top