Hardened F1 Tool Steel
Hardened SAE-AISI F1 is SAE-AISI F1 steel in the hardened (H) condition. The graph bars on the material properties cards below compare hardened SAE-AISI F1 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
190 GPa 27 x 106 psi
Poisson's Ratio
0.29
Rockwell C Hardness
72
Shear Modulus
72 GPa 10 x 106 psi
Tensile Strength: Ultimate (UTS)
2320 MPa 340 x 103 psi
Thermal Properties
Latent Heat of Fusion
250 J/g
Melting Completion (Liquidus)
1480 °C 2690 °F
Melting Onset (Solidus)
1430 °C 2610 °F
Specific Heat Capacity
470 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
45 W/m-K 26 BTU/h-ft-°F
Thermal Expansion
13 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
7.3 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.3 % IACS
Otherwise Unclassified Properties
Base Metal Price
5.0 % relative
Density
7.9 g/cm3 490 lb/ft3
Embodied Carbon
1.7 kg CO2/kg material
Embodied Energy
24 MJ/kg 10 x 103 BTU/lb
Embodied Water
46 L/kg 5.5 gal/lb
Common Calculations
PREN (Pitting Resistance)
2.3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
82 points
Strength to Weight: Bending
49 points
Thermal Diffusivity
12 mm2/s
Thermal Shock Resistance
70 points
Alloy Composition
| Fe | 95.9 to 98 | |
| W | 1.0 to 1.8 | |
| C | 1.0 to 1.3 | |
| Si | 0.1 to 0.5 | |
| Mn | 0 to 0.5 | |
| 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