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Grade 350 Maraging Steel vs. ASTM A387 Grade 12 Steel

Both grade 350 maraging steel and ASTM A387 grade 12 steel are iron alloys. They have 64% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is grade 350 maraging steel and the bottom bar is ASTM A387 grade 12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 4.1 to 18
25
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 75
73
Shear Strength, MPa 710 to 1400
300 to 330
Tensile Strength: Ultimate (UTS), MPa 1140 to 2420
470 to 520
Tensile Strength: Yield (Proof), MPa 830 to 2300
260 to 310

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1470
1470
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 39
2.8
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 5.6
1.6
Embodied Energy, MJ/kg 74
21
Embodied Water, L/kg 160
51

Common Calculations

PREN (Pitting Resistance) 16
2.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 190
98 to 110
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 38 to 82
16 to 18
Strength to Weight: Bending, points 29 to 49
17 to 18
Thermal Shock Resistance, points 35 to 74
14 to 15

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
0.050 to 0.17
Chromium (Cr), % 0
0.8 to 1.2
Cobalt (Co), % 11.5 to 12.5
0
Iron (Fe), % 61.2 to 64.6
97 to 98.2
Manganese (Mn), % 0 to 0.1
0.4 to 0.65
Molybdenum (Mo), % 4.6 to 5.2
0.45 to 0.6
Nickel (Ni), % 18 to 19
0
Phosphorus (P), % 0 to 0.010
0 to 0.025
Silicon (Si), % 0 to 0.1
0.15 to 0.4
Sulfur (S), % 0 to 0.010
0 to 0.025
Titanium (Ti), % 1.3 to 1.6
0
Zirconium (Zr), % 0 to 0.020
0

Comparable Variants