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Grade 350 Maraging Steel vs. Austempered Cast Iron

Both grade 350 maraging steel and austempered cast iron are iron alloys. They have 64% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is grade 350 maraging steel and the bottom bar is austempered cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
180
Elongation at Break, % 4.1 to 18
1.1 to 13
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 75
62 to 69
Tensile Strength: Ultimate (UTS), MPa 1140 to 2420
860 to 1800
Tensile Strength: Yield (Proof), MPa 830 to 2300
560 to 1460

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Melting Completion (Liquidus), °C 1470
1380
Melting Onset (Solidus), °C 1420
1340
Specific Heat Capacity, J/kg-K 450
490
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 39
2.9
Density, g/cm3 8.2
7.5
Embodied Carbon, kg CO2/kg material 5.6
1.8
Embodied Energy, MJ/kg 74
25
Embodied Water, L/kg 160
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 190
19 to 95
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 38 to 82
32 to 66
Strength to Weight: Bending, points 29 to 49
27 to 44
Thermal Shock Resistance, points 35 to 74
25 to 53

Alloy Composition

Aluminum (Al), % 0.050 to 0.15
0 to 0.050
Arsenic (As), % 0
0 to 0.020
Boron (B), % 0 to 0.0030
0
Calcium (Ca), % 0 to 0.050
0
Carbon (C), % 0 to 0.030
3.4 to 3.8
Chromium (Cr), % 0
0 to 0.1
Cobalt (Co), % 11.5 to 12.5
0
Copper (Cu), % 0
0 to 0.8
Iron (Fe), % 61.2 to 64.6
89.6 to 94
Magnesium (Mg), % 0
0 to 0.040
Manganese (Mn), % 0 to 0.1
0.3 to 0.4
Molybdenum (Mo), % 4.6 to 5.2
0 to 0.3
Nickel (Ni), % 18 to 19
0 to 2.0
Phosphorus (P), % 0 to 0.010
0 to 0.040
Selenium (Se), % 0
0 to 0.030
Silicon (Si), % 0 to 0.1
2.3 to 2.7
Sulfur (S), % 0 to 0.010
0 to 0.020
Tin (Sn), % 0
0 to 0.020
Titanium (Ti), % 1.3 to 1.6
0
Vanadium (V), % 0
0 to 0.1
Zirconium (Zr), % 0 to 0.020
0