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Grade 350 Maraging Steel vs. S15500 Stainless Steel

Both grade 350 maraging steel and S15500 stainless steel are iron alloys. They have 68% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is grade 350 maraging steel and the bottom bar is S15500 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 4.1 to 18
6.8 to 16
Poisson's Ratio 0.3
0.28
Rockwell C Hardness 34 to 60
27 to 46
Shear Modulus, GPa 75
75
Shear Strength, MPa 710 to 1400
540 to 870
Tensile Strength: Ultimate (UTS), MPa 1140 to 2420
890 to 1490
Tensile Strength: Yield (Proof), MPa 830 to 2300
590 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Melting Completion (Liquidus), °C 1470
1430
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 450
480
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 39
13
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 5.6
2.7
Embodied Energy, MJ/kg 74
39
Embodied Water, L/kg 160
130

Common Calculations

PREN (Pitting Resistance) 16
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 190
98 to 120
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 38 to 82
32 to 53
Strength to Weight: Bending, points 29 to 49
26 to 37
Thermal Shock Resistance, points 35 to 74
30 to 50

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 0.070
Chromium (Cr), % 0
14 to 15.5
Cobalt (Co), % 11.5 to 12.5
0
Copper (Cu), % 0
2.5 to 4.5
Iron (Fe), % 61.2 to 64.6
71.9 to 79.9
Manganese (Mn), % 0 to 0.1
0 to 1.0
Molybdenum (Mo), % 4.6 to 5.2
0
Nickel (Ni), % 18 to 19
3.5 to 5.5
Niobium (Nb), % 0
0.15 to 0.45
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 0.030
Titanium (Ti), % 1.3 to 1.6
0
Zirconium (Zr), % 0 to 0.020
0