SAE-AISI H22 (T20822) Tungsten Hot-Work Steel
Tool Steels
Property Overview
Density8.7g/cm³
Elastic Modulus200GPa
Tensile Strength700 to 1920MPa
Yield StrengthUnknown
Brinell HardnessUnknown
Maximum Service TemperatureUnknown
Chemical Composition
C
0.3 to 0.4%
CR
1.8 to 3.8%
NI
0 to 0.3%
MN
0.15 to 0.4%
SI
0.15 to 0.4%
P
0 to 0.030%
S
0 to 0.030%
CU
0 to 0.25%
V
0.25 to 0.5%
W
10 to 11.8%
FE
82.2 to 87.4%
Mechanical
Elastic (Young's, Tensile) Modulus
200 GPa
Poisson's Ratio
0.29
Shear Modulus
77 GPa
Tensile Strength: Ultimate (UTS)
700 to 1920 MPa
Physical
Density
8.7 g/cm 3
Thermal
Latent Heat of Fusion
250 J/g
Melting Completion (Liquidus)
1670 °C
Melting Onset (Solidus)
1620 °C
Specific Heat Capacity
440 J/kg-K
Thermal Conductivity
31 W/m-K
Thermal Diffusivity
8.2 mm 2 /s
Thermal Expansion
12 µm/m-K
Thermal Shock Resistance
22 to 60 points
Calculated
PREN (Pitting Resistance)
21
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
22 points
Strength to Weight: Axial
22 to 61 points
Strength to Weight: Bending
20 to 39 points
Environmental
Base Metal Price
28 % relative
Embodied Carbon
4.9 kg CO 2 /kg material
Embodied Energy
73 MJ/kg
Embodied Energy
73 MJ/kg 31 x 10 3 BTU/lb
Embodied Water
72 L/kg
Embodied Water
72 L/kg 8.6 gal/lb
Registered Designations & Aliases
SAE-AISI H22 (T20822) Tungsten Hot-Work SteelT20822
Standards
ASTM A681 ASTM A681: Standard Specification for Tool Steels Alloy
ASTM A681 ASTM A681: Standard Specification for Tool Steels Alloy Tool Steels, 5th ed., George Roberts et al., 1998 Tool Steels: Properties and Performance, Rafael A. Mesquita (editor), 2016