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EN 1.4901 Stainless Steel vs. Grade 250 Maraging Steel

Both EN 1.4901 stainless steel and grade 250 maraging steel are iron alloys. They have 69% of their average alloy composition in common. There are 24 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 EN 1.4901 stainless steel and the bottom bar is grade 250 maraging steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19
7.3 to 17
Poisson's Ratio 0.28
0.3
Shear Modulus, GPa 76
75
Shear Strength, MPa 460
600 to 1060
Tensile Strength: Ultimate (UTS), MPa 740
970 to 1800
Tensile Strength: Yield (Proof), MPa 490
660 to 1740

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Melting Completion (Liquidus), °C 1490
1480
Melting Onset (Solidus), °C 1450
1430
Specific Heat Capacity, J/kg-K 470
450
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 11
32
Density, g/cm3 7.9
8.2
Embodied Carbon, kg CO2/kg material 2.8
4.9
Embodied Energy, MJ/kg 40
65
Embodied Water, L/kg 89
140

Common Calculations

PREN (Pitting Resistance) 14
16
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
130 to 150
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 26
33 to 61
Strength to Weight: Bending, points 23
26 to 40
Thermal Shock Resistance, points 23
29 to 54

Alloy Composition

Aluminum (Al), % 0 to 0.020
0.050 to 0.15
Boron (B), % 0.0010 to 0.0060
0 to 0.0030
Calcium (Ca), % 0
0 to 0.050
Carbon (C), % 0.070 to 0.13
0 to 0.030
Chromium (Cr), % 8.5 to 9.5
0
Cobalt (Co), % 0
7.0 to 8.5
Iron (Fe), % 85.8 to 89.1
66.3 to 71.1
Manganese (Mn), % 0.3 to 0.6
0 to 0.1
Molybdenum (Mo), % 0.3 to 0.6
4.6 to 5.2
Nickel (Ni), % 0 to 0.4
17 to 19
Niobium (Nb), % 0.040 to 0.090
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.020
0 to 0.010
Silicon (Si), % 0 to 0.5
0 to 0.1
Sulfur (S), % 0 to 0.010
0 to 0.010
Titanium (Ti), % 0 to 0.010
0.3 to 0.5
Tungsten (W), % 1.5 to 2.0
0
Vanadium (V), % 0.15 to 0.25
0
Zirconium (Zr), % 0 to 0.010
0 to 0.020