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America SAE 4815H Hardenability bands for carbon and alloy H steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 4815H / 4815 H
Category Grade Standard Region/Area Standard Content
Metals 4815 H SAE J 1268 America Hardenability bands for carbon and alloy H steels

Chemical composition(mass fraction)(wt.%) of the 4815 H

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0400 -
P - 0.0300 -
Ni 3.2000 3.8000 -
Mo 0.2000 0.3000 -
Mn 0.3000 0.7000 -
Cu - 0.3500 -
Cr - 0.2000 -
C 0.1200 0.1800 -

Mechanical Properties of steel grade 4815 H

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)
945 (≥) 526 (≥) 12 31 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 211

Physical Properties of steel grade 4815 H

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
32 - -     0.42 -  
866 628 - 42.3 213   -  
558 - 42 23.2   114 114

Heat Treatment of steel grade 4815 H

Heat treated : 1825°C - 1989°C

Technological Curves of steel grade 4815 H

Cross Reference Table (Equivalent Grade) of 4815 H

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