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HH

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Description

USA ASTM HH Steel Castings, Iron-Chromium and Iron-Chromium-Nickel,Heat Resistant, for General Application and HH Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: HH
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy HH ASTM USA Steel Castings, Iron-Chromium and Iron-Chromium-Nickel,Heat Resistant, for General Application
J91119
J91129
J91139
J91149
J91309
J91459
J91249
J91339
J91340
HF

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

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％)
0.20-0.50 2 2 0.04 0.04 24.0-28.0 11.0-14.0 0.5

Mechanical Properties of steel grade HH

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)
873 (≥) 447 (≥) 13 13 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 134

Physical Properties of steel grade HH

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
33 - -     0.11 -  
125 289 - 34.3 223   -  
134 - 23 43.2   133 411

Heat Treatment of steel grade HH

Heat treated : 1374°C - 1486°C

Technological Curves of steel grade HH

Cross Reference Table (Equivalent Grade) of HH

Grade Standard Country Application
ASTM HH AISI USA
HH ASTM USA Steel Castings, Iron-Chromium and Iron-Chromium-Nickel,Heat Resistant, for General Application
HH ASTM USA Steel Castings, Iron-Chromium and Iron-Chromium-Nickel,Heat Resistant, for General Application
HF HI
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Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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