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Grade 300 Maraging Steel vs. SAE-AISI 1078 Steel

Both grade 300 maraging steel and SAE-AISI 1078 steel are iron alloys. They have 67% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is grade 300 maraging steel and the bottom bar is SAE-AISI 1078 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 6.5 to 18
11 to 14
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 75
72
Shear Strength, MPa 640 to 1190
440 to 470
Tensile Strength: Ultimate (UTS), MPa 1030 to 2030
730 to 780
Tensile Strength: Yield (Proof), MPa 760 to 1990
430 to 570

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1480
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 34
1.8
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 5.1
1.4
Embodied Energy, MJ/kg 68
18
Embodied Water, L/kg 150
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 170
77 to 90
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 35 to 68
26 to 28
Strength to Weight: Bending, points 28 to 43
23 to 24
Thermal Shock Resistance, points 31 to 62
25 to 26

Alloy Composition

Aluminum (Al), % 0.050 to 0.15
0
Boron (B), % 0 to 0.0030
0
Calcium (Ca), % 0 to 0.050
0
Carbon (C), % 0 to 0.030
0.72 to 0.85
Cobalt (Co), % 8.5 to 9.5
0
Iron (Fe), % 65 to 68.4
98.5 to 99
Manganese (Mn), % 0 to 0.1
0.3 to 0.6
Molybdenum (Mo), % 4.6 to 5.2
0
Nickel (Ni), % 18 to 19
0
Phosphorus (P), % 0 to 0.010
0 to 0.040
Silicon (Si), % 0 to 0.1
0
Sulfur (S), % 0 to 0.010
0 to 0.050
Titanium (Ti), % 0.5 to 0.8
0
Zirconium (Zr), % 0 to 0.020
0