Hardened H41 Tool Steel
Hardened SAE-AISI H41 is SAE-AISI H41 steel in the hardened (H) condition. The graph bars on the material properties cards below compare hardened SAE-AISI H41 to: tool steels (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Elastic (Young's, Tensile) Modulus
200 GPa 29 x 106 psi
Poisson's Ratio
0.29
Rockwell C Hardness
68
Shear Modulus
77 GPa 11 x 106 psi
Tensile Strength: Ultimate (UTS)
2210 MPa 320 x 103 psi
Thermal Properties
Latent Heat of Fusion
270 J/g
Melting Completion (Liquidus)
1560 °C 2840 °F
Melting Onset (Solidus)
1510 °C 2760 °F
Specific Heat Capacity
450 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
28 W/m-K 16 BTU/h-ft-°F
Thermal Expansion
12 µm/m-K
Otherwise Unclassified Properties
Base Metal Price
18 % relative
Density
8.1 g/cm3 510 lb/ft3
Embodied Carbon
6.8 kg CO2/kg material
Embodied Energy
97 MJ/kg 42 x 103 BTU/lb
Embodied Water
97 L/kg 12 gal/lb
Common Calculations
PREN (Pitting Resistance)
35
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
76 points
Strength to Weight: Bending
47 points
Thermal Diffusivity
7.7 mm2/s
Thermal Shock Resistance
64 points
Alloy Composition
| Fe | 81.8 to 85 | |
| Mo | 8.2 to 9.2 | |
| Cr | 3.5 to 4.0 | |
| W | 1.4 to 2.1 | |
| V | 1.0 to 1.3 | |
| C | 0.6 to 0.75 | |
| Si | 0.2 to 0.45 | |
| Mn | 0.15 to 0.4 | |
| P | 0 to 0.030 | |
| S | 0 to 0.030 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM A681: Standard Specification for Tool Steels Alloy
Tool Steels: Properties and Performance, Rafael A. Mesquita (editor), 2016
ASM Specialty Handbook: Carbon and Alloy Steels, J. R. Davis (editor), 1996