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Class 45H

International ISO Class45H Mechanical properties of fasteners made of carbon steel and alloy steel - Part 5: Set screws and similar threaded fasteners not under tensile stresses and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: Class45H / Class 45H
Category Grade Standard Region/Area Standard Content
Metals Class 45H ISO 898-5 International Mechanical properties of fasteners made of carbon steel and alloy steel - Part 5: Set screws and similar threaded fasteners not under tensile stresses

Chemical composition(mass fraction)(wt.%) of the Class 45H

Element Min Max Similar
S - 0.0500 -
P - 0.0500 -
C 0.1900 0.5000 -

Mechanical Properties of steel grade Class 45H

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)
339 (≥) 138 (≥) 44 22 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 142

Physical Properties of steel grade Class 45H

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 - -     0.24 -  
737 925 - 34.3 221   -  
695 - 12 44.2   244 222

Heat Treatment of steel grade Class 45H

Heat treated : 1264°C - 1774°C

Technological Curves of steel grade Class 45H

Cross Reference Table (Equivalent Grade) of Class 45H

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