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Grade 200 Maraging Steel vs. ASTM A387 Grade 21 Steel

Both grade 200 maraging steel and ASTM A387 grade 21 steel are iron alloys. They have 71% 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 grade 200 maraging steel and the bottom bar is ASTM A387 grade 21 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 9.1 to 18
21
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 74
74
Shear Strength, MPa 600 to 890
310 to 370
Tensile Strength: Ultimate (UTS), MPa 970 to 1500
500 to 590
Tensile Strength: Yield (Proof), MPa 690 to 1490
230 to 350

Thermal Properties

Latent Heat of Fusion, J/g 260
260
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 460
470
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 31
4.1
Density, g/cm3 8.2
7.9
Embodied Carbon, kg CO2/kg material 4.5
1.8
Embodied Energy, MJ/kg 59
23
Embodied Water, L/kg 140
62

Common Calculations

PREN (Pitting Resistance) 11
6.4
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
84 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 1240 to 5740
140 to 320
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 33 to 51
18 to 21
Strength to Weight: Bending, points 27 to 35
18 to 20
Thermal Shock Resistance, points 29 to 45
14 to 17

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 0.15
Chromium (Cr), % 0
2.8 to 3.3
Cobalt (Co), % 8.0 to 9.0
0
Iron (Fe), % 67.8 to 71.8
94.4 to 96
Manganese (Mn), % 0 to 0.1
0.3 to 0.6
Molybdenum (Mo), % 3.0 to 3.5
0.9 to 1.1
Nickel (Ni), % 17 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), % 0.15 to 0.25
0
Zirconium (Zr), % 0 to 0.020
0

Comparable Variants