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America SAE CoCr1 Engine poppet valve information report and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: CoCr1 / Co Cr 1
Category Grade Standard Region/Area Standard Content
Metals Co Cr 1 SAE J 775 America Engine poppet valve information report

Chemical composition(mass fraction)(wt.%) of the Co Cr 1

Element Min Max Similar
W 3.0000 6.0000 -
Total Others - 0.5000 -
Si 0.4000 2.0000 -
Ni - 3.0000 -
Mo - 1.0000 -
Mn - 1.0000 -
Fe - 3.0000 -
Cr 26.0000 32.0000 -
Co - - -
C 0.9000 1.4000 -

Mechanical Properties of steel grade Co Cr 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)
567 (≥) 825 (≥) 12 14 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 122

Physical Properties of steel grade Co Cr 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
42 - -     0.21 -  
433 511 - 21.3 444   -  
711 - 42 14.2   332 334

Heat Treatment of steel grade Co Cr 1

Heat treated : 1656°C - 1194°C

Technological Curves of steel grade Co Cr 1

Cross Reference Table (Equivalent Grade) of Co Cr 1

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