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Annealed 350 Maraging Steel vs. ASTM A387 Grade 12 Class 1

Both annealed 350 maraging steel and ASTM A387 grade 12 class 1 are iron alloys. Both are furnished in the annealed condition. They have 64% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is annealed 350 maraging steel and the bottom bar is ASTM A387 grade 12 class 1.

Metric UnitsUS Customary Units

Mechanical Properties

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

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 190
98
Resilience: Unit (Modulus of Resilience), kJ/m3 1770
180
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 38
16
Strength to Weight: Bending, points 29
17
Thermal Shock Resistance, points 35
14

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