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Grade 350 Maraging Steel vs. ASTM A387 Grade 21L Class 1

Both grade 350 maraging steel and ASTM A387 grade 21L class 1 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 21L class 1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 4.1 to 18
21
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 75
74
Shear Strength, MPa 710 to 1400
310
Tensile Strength: Ultimate (UTS), MPa 1140 to 2420
500
Tensile Strength: Yield (Proof), MPa 830 to 2300
230

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Melting Completion (Liquidus), °C 1470
1470
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 450
470
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 39
4.1
Density, g/cm3 8.2
7.9
Embodied Carbon, kg CO2/kg material 5.6
1.8
Embodied Energy, MJ/kg 74
23
Embodied Water, L/kg 160
62

Common Calculations

PREN (Pitting Resistance) 16
6.4
Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 190
84
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 38 to 82
18
Strength to Weight: Bending, points 29 to 49
18
Thermal Shock Resistance, points 35 to 74
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 to 0.1
Chromium (Cr), % 0
2.8 to 3.3
Cobalt (Co), % 11.5 to 12.5
0
Iron (Fe), % 61.2 to 64.6
94.4 to 96.1
Manganese (Mn), % 0 to 0.1
0.3 to 0.6
Molybdenum (Mo), % 4.6 to 5.2
0.9 to 1.1
Nickel (Ni), % 18 to 19
0
Phosphorus (P), % 0 to 0.010
0 to 0.025
Silicon (Si), % 0 to 0.1
0 to 0.5
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