T20824

T20824

USA UNS T20824 Tool Die Steels Hot-Work Tool Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Category Class Grade Standard Country Application
Steel Grades Tool Die Steels T20824 UNS USA Hot-Work Tool Steel


Chemical composition(mass fraction)(wt.%) of the T20824

C Si Mn P S Cr Mo V W Ni+Cu
0.42 -0.53 0.15 -0.40 0.15 -0.40 ≤0.030 ≤0.030 2.50 -3.50 ≤ ≥ 0.40 -0.60 14.00 -16.00 ≤0.75



Mechanical Properties of steel grade T20824

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)
756 (≥) 333 (≥) 32 14 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 443

Physical Properties of steel grade T20824

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
23     0.42  
969 288 33.3 223    
947 33 14.2   133 142

Heat Treatment of steel grade T20824

Heat treated : 1127°C – 1533°C

Technological Curves of steel grade T20824

Cross Reference Table (Equivalent Grade) of T20824

Grade Standard Country Application
UNS T20824
T20824