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EN 1.4150 Stainless Steel vs. EN 1.4931 Steel

Both EN 1.4150 stainless steel and EN 1.4931 steel are iron alloys. They have a moderately high 94% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4150 stainless steel and the bottom bar is EN 1.4931 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
240
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20
17
Fatigue Strength, MPa 270
410
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 730
810
Tensile Strength: Yield (Proof), MPa 430
620

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Mechanical, °C 840
600
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 490
470
Thermal Conductivity, W/m-K 23
24
Thermal Expansion, µm/m-K 10
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
9.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
11

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
8.5
Density, g/cm3 7.6
7.8
Embodied Carbon, kg CO2/kg material 2.8
2.9
Embodied Energy, MJ/kg 42
42
Embodied Water, L/kg 120
100

Common Calculations

PREN (Pitting Resistance) 19
16
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
130
Resilience: Unit (Modulus of Resilience), kJ/m3 470
970
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
29
Strength to Weight: Bending, points 24
25
Thermal Diffusivity, mm2/s 6.2
6.5
Thermal Shock Resistance, points 27
22

Alloy Composition

Carbon (C), % 0.45 to 0.6
0.2 to 0.26
Chromium (Cr), % 15 to 16.5
11.3 to 12.2
Iron (Fe), % 79 to 82.8
83.2 to 86.8
Manganese (Mn), % 0 to 0.8
0.5 to 0.8
Molybdenum (Mo), % 0.2 to 0.4
1.0 to 1.2
Nickel (Ni), % 0 to 0.4
0 to 1.0
Nitrogen (N), % 0.050 to 0.2
0
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 1.3 to 1.7
0 to 0.4
Sulfur (S), % 0 to 0.010
0 to 0.020
Tungsten (W), % 0
0 to 0.5
Vanadium (V), % 0.2 to 0.4
0.25 to 0.35