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ASTM A356 Grade 2 vs. Grade 300 Maraging Steel

Both ASTM A356 grade 2 and grade 300 maraging steel are iron alloys. They have 67% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is ASTM A356 grade 2 and the bottom bar is grade 300 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 25
6.5 to 18
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 73
75
Tensile Strength: Ultimate (UTS), MPa 510
1030 to 2030
Tensile Strength: Yield (Proof), MPa 270
760 to 1990

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Melting Completion (Liquidus), °C 1470
1480
Melting Onset (Solidus), °C 1430
1430
Specific Heat Capacity, J/kg-K 470
450
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
34
Density, g/cm3 7.9
8.2
Embodied Carbon, kg CO2/kg material 1.5
5.1
Embodied Energy, MJ/kg 20
68
Embodied Water, L/kg 47
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
130 to 170
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 18
35 to 68
Strength to Weight: Bending, points 18
28 to 43
Thermal Shock Resistance, points 15
31 to 62

Alloy Composition

Aluminum (Al), % 0
0.050 to 0.15
Boron (B), % 0
0 to 0.0030
Calcium (Ca), % 0
0 to 0.050
Carbon (C), % 0 to 0.25
0 to 0.030
Cobalt (Co), % 0
8.5 to 9.5
Iron (Fe), % 97.7 to 99.55
65 to 68.4
Manganese (Mn), % 0 to 0.7
0 to 0.1
Molybdenum (Mo), % 0.45 to 0.65
4.6 to 5.2
Nickel (Ni), % 0
18 to 19
Phosphorus (P), % 0 to 0.035
0 to 0.010
Silicon (Si), % 0 to 0.6
0 to 0.1
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0.5 to 0.8
Zirconium (Zr), % 0
0 to 0.020