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Grade 200 Maraging Steel vs. S31730 Stainless Steel

Both grade 200 maraging steel and S31730 stainless steel are iron alloys. They have 76% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is grade 200 maraging steel and the bottom bar is S31730 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 9.1 to 18
40
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 74
77
Shear Strength, MPa 600 to 890
370
Tensile Strength: Ultimate (UTS), MPa 970 to 1500
540
Tensile Strength: Yield (Proof), MPa 690 to 1490
200

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 460
470
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 31
24
Density, g/cm3 8.2
8.0
Embodied Carbon, kg CO2/kg material 4.5
4.6
Embodied Energy, MJ/kg 59
63
Embodied Water, L/kg 140
180

Common Calculations

PREN (Pitting Resistance) 11
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
170
Resilience: Unit (Modulus of Resilience), kJ/m3 1240 to 5740
99
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 33 to 51
19
Strength to Weight: Bending, points 27 to 35
18
Thermal Shock Resistance, points 29 to 45
12

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 0.030
Chromium (Cr), % 0
17 to 19
Cobalt (Co), % 8.0 to 9.0
0
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 67.8 to 71.8
52.4 to 61
Manganese (Mn), % 0 to 0.1
0 to 2.0
Molybdenum (Mo), % 3.0 to 3.5
3.0 to 4.0
Nickel (Ni), % 17 to 19
15 to 16.5
Nitrogen (N), % 0
0 to 0.045
Phosphorus (P), % 0 to 0.010
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.010
Titanium (Ti), % 0.15 to 0.25
0
Zirconium (Zr), % 0 to 0.020
0