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SAE-AISI 9310 Steel vs. SAE-AISI 1078 Steel

Both SAE-AISI 9310 steel and SAE-AISI 1078 steel are iron alloys. They have a very high 95% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 9310 steel and the bottom bar is SAE-AISI 1078 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 540 to 610
220 to 230
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17 to 19
11 to 14
Fatigue Strength, MPa 300 to 390
270 to 350
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
72
Shear Strength, MPa 510 to 570
440 to 470
Tensile Strength: Ultimate (UTS), MPa 820 to 910
730 to 780
Tensile Strength: Yield (Proof), MPa 450 to 570
430 to 570

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 440
400
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 48
49
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 4.4
1.8
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.8
1.4
Embodied Energy, MJ/kg 24
18
Embodied Water, L/kg 57
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 150
77 to 90
Resilience: Unit (Modulus of Resilience), kJ/m3 540 to 860
490 to 860
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 29 to 32
26 to 28
Strength to Weight: Bending, points 25 to 27
23 to 24
Thermal Diffusivity, mm2/s 13
13
Thermal Shock Resistance, points 24 to 27
25 to 26

Alloy Composition

Carbon (C), % 0.080 to 0.13
0.72 to 0.85
Chromium (Cr), % 1.0 to 1.4
0
Iron (Fe), % 93.8 to 95.2
98.5 to 99
Manganese (Mn), % 0.45 to 0.65
0.3 to 0.6
Molybdenum (Mo), % 0.080 to 0.15
0
Nickel (Ni), % 3.0 to 3.5
0
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0.2 to 0.35
0
Sulfur (S), % 0 to 0.012
0 to 0.050