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America SAE 4027H Hardenability bands for carbon and alloy H steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 4027H / 4027 H
Category Grade Standard Region/Area Standard Content
Metals 4027 H SAE J 1268 America Hardenability bands for carbon and alloy H steels

Chemical composition(mass fraction)(wt.%) of the 4027 H

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0400 -
P - 0.0300 -
Ni - 0.2500 -
Mo 0.2000 0.3000 -
Mn 0.6000 1.0000 -
Cu - 0.3500 -
Cr - 0.2000 -
C 0.2400 0.3000 -

Mechanical Properties of steel grade 4027 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)
287 (≥) 614 (≥) 22 21 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 141

Physical Properties of steel grade 4027 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
42 - -     0.41 -  
627 488 - 13.3 444   -  
999 - 22 12.2   111 134

Heat Treatment of steel grade 4027 H

Heat treated : 1339°C - 1442°C

Technological Curves of steel grade 4027 H

Cross Reference Table (Equivalent Grade) of 4027 H

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