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Grade 300 Maraging Steel vs. Austenitic Grey Cast Iron

Both grade 300 maraging steel and austenitic grey cast iron are iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is grade 300 maraging steel and the bottom bar is austenitic grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
180
Poisson's Ratio 0.3
0.29 to 0.3
Shear Modulus, GPa 75
69 to 72
Tensile Strength: Ultimate (UTS), MPa 1030 to 2030
150 to 230

Thermal Properties

Latent Heat of Fusion, J/g 270
280 to 350
Melting Completion (Liquidus), °C 1480
1340 to 1400
Melting Onset (Solidus), °C 1430
1290 to 1350
Specific Heat Capacity, J/kg-K 450
470 to 490
Thermal Expansion, µm/m-K 12
13 to 14

Otherwise Unclassified Properties

Base Metal Price, % relative 34
14 to 24
Density, g/cm3 8.2
7.7 to 8.1
Embodied Carbon, kg CO2/kg material 5.1
3.1 to 4.7
Embodied Energy, MJ/kg 68
43 to 65
Embodied Water, L/kg 150
93 to 120

Common Calculations

PREN (Pitting Resistance) 16
2.0 to 5.0
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
23 to 25
Strength to Weight: Axial, points 35 to 68
5.3 to 8.2
Strength to Weight: Bending, points 28 to 43
7.9 to 11
Thermal Shock Resistance, points 31 to 62
4.5 to 6.5