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Grade 350 Maraging Steel vs. EN 1.4581 Stainless Steel

Both grade 350 maraging steel and EN 1.4581 stainless steel are iron alloys. They have 76% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is grade 350 maraging steel and the bottom bar is EN 1.4581 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 4.1 to 18
28
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 75
78
Tensile Strength: Ultimate (UTS), MPa 1140 to 2420
510
Tensile Strength: Yield (Proof), MPa 830 to 2300
210

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Melting Completion (Liquidus), °C 1470
1440
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 450
470
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 39
21
Density, g/cm3 8.2
7.8
Embodied Carbon, kg CO2/kg material 5.6
4.2
Embodied Energy, MJ/kg 74
59
Embodied Water, L/kg 160
160

Common Calculations

PREN (Pitting Resistance) 16
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 190
120
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
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 0.070
Chromium (Cr), % 0
18 to 20
Cobalt (Co), % 11.5 to 12.5
0
Iron (Fe), % 61.2 to 64.6
61.4 to 71
Manganese (Mn), % 0 to 0.1
0 to 1.5
Molybdenum (Mo), % 4.6 to 5.2
2.0 to 2.5
Nickel (Ni), % 18 to 19
9.0 to 12
Niobium (Nb), % 0
0 to 1.0
Phosphorus (P), % 0 to 0.010
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 1.5
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