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Grade 350 Maraging Steel vs. S43940 Stainless Steel

Both grade 350 maraging steel and S43940 stainless steel are iron alloys. They have 63% of their average alloy composition in common. There are 24 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 S43940 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 4.1 to 18
21
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 75
77
Shear Strength, MPa 710 to 1400
310
Tensile Strength: Ultimate (UTS), MPa 1140 to 2420
490
Tensile Strength: Yield (Proof), MPa 830 to 2300
280

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Melting Completion (Liquidus), °C 1470
1440
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 450
480
Thermal Expansion, µm/m-K 12
10

Otherwise Unclassified Properties

Base Metal Price, % relative 39
12
Density, g/cm3 8.2
7.7
Embodied Carbon, kg CO2/kg material 5.6
2.6
Embodied Energy, MJ/kg 74
38
Embodied Water, L/kg 160
120

Common Calculations

PREN (Pitting Resistance) 16
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 190
86
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
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
18

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
17.5 to 18.5
Cobalt (Co), % 11.5 to 12.5
0
Iron (Fe), % 61.2 to 64.6
78.2 to 82.1
Manganese (Mn), % 0 to 0.1
0 to 1.0
Molybdenum (Mo), % 4.6 to 5.2
0
Nickel (Ni), % 18 to 19
0
Niobium (Nb), % 0
0.3 to 0.6
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 0.015
Titanium (Ti), % 1.3 to 1.6
0.1 to 0.6
Zirconium (Zr), % 0 to 0.020
0