H21

USA ASTM H21 Hot-Work Tool Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Category Class Grade Standard Country Application
Steel GradesTool Die Steels H21 ASTM USA Hot-Work Tool Steel
Datasheet for:Steel Grades:Tool Die Steels:H21

Chemical composition(mass fraction)(wt.%) of the H21

Elements Min.(≥) Max.(≤)
C 0.26 0.36
Si 0.15 0.50
Mn 0.15 0.40
P - 0.030
S - 0.030
Cr 3.00 3.75
Mo - -
V 0.30 0.60
W 8.50 10.00
Ni+Cu - 0.75

Mechanical properties / Mechanische Eigenschaften / Caracteristiques mecaniques of grade H21

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)
471 (≥) 194 (≥) 32 24 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 331
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
12 - -     0.24 -  
177 295 - 43.3 314   -  
922 - 41 22.2   334 423
Heat treated : 1599°C - 1542°C
The material does not have direct Metallography properties.
Directory is being updated.
The material does not have direct Metallography properties.
Directory is being updated.

Cross Reference Table(Equivalent Grade)

Grade Standard Country Application
GH2130 GB China
Classification and designation for superalloys and high temperature intermetallic materials
GH2132 GB China
Classification and designation for superalloys and high temperature intermetallic materials
GH2135 GB China
Classification and designation for superalloys and high temperature intermetallic materials
GH2136 GB China
Classification and designation for superalloys and high temperature intermetallic materials
03X21H21M4ΓБ GOST Russia
Russia GOCT standard stainless steel and heat resistant steel steel grade and chemical composition
SUH21 CNS China
CNS standard heat resistant steel plate of the steel grade and chemical composition
ISO H21 ISO International
Nickel and nickel alloy forgings
H21 ASTM USA
Hot-Work Tool Steel
H21 SAE USA
Hot-Work Tool Steel
Contact Suppliers with your enquiries for H21 any of the shape and size.

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H21 can be supplied as steel plate/ sheet, round steel bar, steel tube/pipe, steel stripe, steel billet, steel ingot, steel wire rods. electroslag, forged ring/ block,etc.
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