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Grade 350 Maraging Steel vs. S44800 Stainless Steel

Both grade 350 maraging steel and S44800 stainless steel are iron alloys. They have 69% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is grade 350 maraging steel and the bottom bar is S44800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 4.1 to 18
23
Poisson's Ratio 0.3
0.27
Rockwell C Hardness 34 to 60
18
Shear Modulus, GPa 75
82
Shear Strength, MPa 710 to 1400
370
Tensile Strength: Ultimate (UTS), MPa 1140 to 2420
590
Tensile Strength: Yield (Proof), MPa 830 to 2300
450

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 450
480
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 39
19
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 5.6
3.8
Embodied Energy, MJ/kg 74
52
Embodied Water, L/kg 160
190

Common Calculations

PREN (Pitting Resistance) 16
42
Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 190
120
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 38 to 82
21
Strength to Weight: Bending, points 29 to 49
20
Thermal Shock Resistance, points 35 to 74
19

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 0.010
Chromium (Cr), % 0
28 to 30
Cobalt (Co), % 11.5 to 12.5
0
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 61.2 to 64.6
62.6 to 66.5
Manganese (Mn), % 0 to 0.1
0 to 0.3
Molybdenum (Mo), % 4.6 to 5.2
3.5 to 4.2
Nickel (Ni), % 18 to 19
2.0 to 2.5
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.010
0 to 0.025
Silicon (Si), % 0 to 0.1
0 to 0.2
Sulfur (S), % 0 to 0.010
0 to 0.020
Titanium (Ti), % 1.3 to 1.6
0
Zirconium (Zr), % 0 to 0.020
0