Hardened H22 Tool Steel
Hardened SAE-AISI H22 is SAE-AISI H22 steel in the hardened (H) condition. The graph bars on the material properties cards below compare hardened SAE-AISI H22 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
59
Shear Modulus
77 GPa 11 x 106 psi
Tensile Strength: Ultimate (UTS)
1920 MPa 280 x 103 psi
Thermal Properties
Latent Heat of Fusion
250 J/g
Melting Completion (Liquidus)
1670 °C 3040 °F
Melting Onset (Solidus)
1620 °C 2950 °F
Specific Heat Capacity
440 J/kg-K 0.1 BTU/lb-°F
Thermal Conductivity
31 W/m-K 18 BTU/h-ft-°F
Thermal Expansion
12 µm/m-K
Otherwise Unclassified Properties
Base Metal Price
28 % relative
Density
8.7 g/cm3 540 lb/ft3
Embodied Carbon
4.9 kg CO2/kg material
Embodied Energy
73 MJ/kg 31 x 103 BTU/lb
Embodied Water
72 L/kg 8.6 gal/lb
Common Calculations
PREN (Pitting Resistance)
21
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
22 points
Strength to Weight: Axial
61 points
Strength to Weight: Bending
39 points
Thermal Diffusivity
8.2 mm2/s
Thermal Shock Resistance
60 points
Alloy Composition
| Fe | 82.2 to 87.4 | |
| W | 10 to 11.8 | |
| Cr | 1.8 to 3.8 | |
| V | 0.25 to 0.5 | |
| C | 0.3 to 0.4 | |
| Mn | 0.15 to 0.4 | |
| Si | 0.15 to 0.4 | |
| Ni | 0 to 0.3 | |
| Cu | 0 to 0.25 | |
| 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