Annealed 9310 Ni-Cr-Mo Steel
Annealed SAE-AISI 9310 is SAE-AISI 9310 steel in the annealed condition. The graph bars on the material properties cards below compare annealed SAE-AISI 9310 to: SAE-AISI wrought 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
Brinell Hardness
540
Elastic (Young's, Tensile) Modulus
190 GPa 27 x 106 psi
Elongation at Break
17 %
Fatigue Strength
300 MPa 43 x 103 psi
Poisson's Ratio
0.29
Rockwell B Hardness
240
Shear Modulus
73 GPa 11 x 106 psi
Shear Strength
510 MPa 73 x 103 psi
Tensile Strength: Ultimate (UTS)
820 MPa 120 x 103 psi
Tensile Strength: Yield (Proof)
450 MPa 65 x 103 psi
Thermal Properties
Latent Heat of Fusion
250 J/g
Maximum Temperature: Mechanical
440 °C 820 °F
Melting Completion (Liquidus)
1460 °C 2660 °F
Melting Onset (Solidus)
1420 °C 2580 °F
Specific Heat Capacity
470 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
48 W/m-K 28 BTU/h-ft-°F
Thermal Expansion
13 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
7.7 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.9 % IACS
Otherwise Unclassified Properties
Base Metal Price
4.4 % relative
Density
7.9 g/cm3 490 lb/ft3
Embodied Carbon
1.8 kg CO2/kg material
Embodied Energy
24 MJ/kg 10 x 103 BTU/lb
Embodied Water
57 L/kg 6.8 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
120 MJ/m3
Resilience: Unit (Modulus of Resilience)
540 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
29 points
Strength to Weight: Bending
25 points
Thermal Diffusivity
13 mm2/s
Thermal Shock Resistance
24 points
Alloy Composition
| Fe | 93.8 to 95.2 | |
| Ni | 3.0 to 3.5 | |
| Cr | 1.0 to 1.4 | |
| Mn | 0.45 to 0.65 | |
| Si | 0.2 to 0.35 | |
| Mo | 0.080 to 0.15 | |
| C | 0.080 to 0.13 | |
| P | 0 to 0.015 | |
| S | 0 to 0.012 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM A646: Standard Specification for Premium Quality Alloy Steel Blooms and Billets for Aircraft and Aerospace Forgings
Properties and Selection: Irons, Steels and High Performance Alloys, ASM Handbook vol. 1, ASM International, 1993
ASM Specialty Handbook: Carbon and Alloy Steels, J. R. Davis (editor), 1996
Manufacture and Uses of Alloy Steels, Henry D. Hibbard, 2005
Steels: Processing, Structure, and Performance, 2nd ed., George Krauss, 2015