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SAE-AISI 1078 Steel vs. SAE-AISI D3 Steel

Both SAE-AISI 1078 steel and SAE-AISI D3 steel are iron alloys. They have 85% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1078 steel and the bottom bar is SAE-AISI D3 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 14
9.8 to 15
Fatigue Strength, MPa 270 to 350
310 to 940
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
74
Shear Strength, MPa 440 to 470
470 to 1220
Tensile Strength: Ultimate (UTS), MPa 730 to 780
770 to 2050
Tensile Strength: Yield (Proof), MPa 430 to 570
480 to 1550

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 49
31
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
8.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
3.2
Embodied Energy, MJ/kg 18
48
Embodied Water, L/kg 45
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 90
97 to 180
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26 to 28
28 to 74
Strength to Weight: Bending, points 23 to 24
24 to 47
Thermal Diffusivity, mm2/s 13
8.3
Thermal Shock Resistance, points 25 to 26
23 to 63

Alloy Composition

Carbon (C), % 0.72 to 0.85
2.0 to 2.4
Chromium (Cr), % 0
11 to 13.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 98.5 to 99
80.3 to 87
Manganese (Mn), % 0.3 to 0.6
0 to 0.6
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0
0 to 0.6
Sulfur (S), % 0 to 0.050
0 to 0.030
Tungsten (W), % 0
0 to 1.0
Vanadium (V), % 0
0 to 1.0