This page provides T20821 datasheet, T20821 mechanical properties, chemical element T20821, technical specifications of T20821 steel material properties. T20821 performance specifications.

Category Class Grade Standard Country Application
Steel GradesTool Die Steels T20821 UNS USA Hot-Work Tool Steel
Datasheet for:Steel Grades:Tool Die Steels:T20821

Chemical composition(mass fraction)(wt.%) of the T20821

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 T20821

Rp0.2 (MPa)
Rm (MPa)
KV/Ku (J)
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
769 (≥) 697 (≥) 11 32 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 241
Modulus of elasticity
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
Specific thermal capacity
Specific electrical resistivity
(Ω mm²/m)
Poisson’s coefficient, ν
43 - -     0.43 -  
615 464 - 11.3 434   -  
198 - 13 32.2   313 412
Heat treated : 1959°C - 1273°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
T20821 UNS USA
Hot-Work Tool Steel
T20821 UNS USA
Hot-Work Tool Steel
Contact Suppliers with your enquiries for T20821 any of the shape and size.

Haihong International Trade (HK) CO., Limited

Stainless Steel, Special Steel, Compressor Blading, Turbine Blading, Superalloy Supplier.
T20821 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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