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Russia GOST EH5K5 Precision alloys. Grades and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: EH5K5 / EH5K5
Category Grade Standard Region/Area Standard Content
Metals EH5K5 GOST 10994 Russia Precision alloys. Grades

Chemical composition(mass fraction)(wt.%) of the EH5K5

Element Min Max Similar
Si 0.1700 0.4000 -
S - 0.0200 -
P - 0.0300 -
Ni - 0.6000 -
Mn 0.2000 0.4000 -
Fe - - -
Cr 5.5000 6.5000 -
Co 5.5000 6.5000 -
C 0.9000 1.0500 -

Mechanical Properties of steel grade EH5K5

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)
165 (≥) 259 (≥) 33 21 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 234

Physical Properties of steel grade EH5K5

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
13 - -     0.14 -  
571 944 - 43.3 114   -  
476 - 34 31.2   111 344

Heat Treatment of steel grade EH5K5

Heat treated : 1136°C - 1692°C

Technological Curves of steel grade EH5K5

Cross Reference Table (Equivalent Grade) of EH5K5

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