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America SAE 15B30H Hardenability bands for carbon and alloy H steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 15B30H / 15B30 H
Category Grade Standard Region/Area Standard Content
Metals 15B30 H SAE J 1268 America Hardenability bands for carbon and alloy H steels

Chemical composition(mass fraction)(wt.%) of the 15B30 H

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0500 -
P - 0.0300 -
Mn 0.7000 1.2000 -
C 0.2700 0.3500 -
B 0.0005 0.0030 -

Mechanical Properties of steel grade 15B30 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)
433 (≥) 237 (≥) 21 42 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 421

Physical Properties of steel grade 15B30 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
31 - -     0.14 -  
183 769 - 44.3 221   -  
522 - 31 31.2   442 141

Heat Treatment of steel grade 15B30 H

Heat treated : 1397°C - 1713°C

Technological Curves of steel grade 15B30 H

Cross Reference Table (Equivalent Grade) of 15B30 H

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