SAE-AISI H41 (T20841) Molybdenum Hot-Work Steel
Tool Steels
Property Overview
Density8.1g/cm³
Elastic Modulus200GPa
Tensile Strength710 to 2210MPa
Yield StrengthUnknown
Brinell HardnessUnknown
Maximum Service TemperatureUnknown
Chemical Composition
C
0.6 to 0.75%
CR
3.5 to 4.0%
MO
8.2 to 9.2%
MN
0.15 to 0.4%
SI
0.2 to 0.45%
P
0 to 0.030%
S
0 to 0.030%
V
1.0 to 1.3%
W
1.4 to 2.1%
FE
81.8 to 85%
Mechanical
Elastic (Young's, Tensile) Modulus
200 GPa
Poisson's Ratio
0.29
Shear Modulus
77 GPa
Tensile Strength: Ultimate (UTS)
710 to 2210 MPa
Physical
Density
8.1 g/cm 3
Thermal
Latent Heat of Fusion
270 J/g
Melting Completion (Liquidus)
1560 °C
Melting Onset (Solidus)
1510 °C
Specific Heat Capacity
450 J/kg-K
Thermal Conductivity
28 W/m-K
Thermal Diffusivity
7.7 mm 2 /s
Thermal Expansion
12 µm/m-K
Thermal Shock Resistance
20 to 64 points
Calculated
PREN (Pitting Resistance)
35
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
24 to 76 points
Strength to Weight: Bending
22 to 47 points
Environmental
Base Metal Price
18 % relative
Embodied Carbon
6.8 kg CO 2 /kg material
Embodied Energy
97 MJ/kg
Embodied Energy
97 MJ/kg 42 x 10 3 BTU/lb
Embodied Water
97 L/kg
Embodied Water
97 L/kg 12 gal/lb
Registered Designations & Aliases
SAE-AISI H41 (T20841) Molybdenum Hot-Work SteelT20841
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