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EN 1.4931 Steel vs. S39277 Stainless Steel

Both EN 1.4931 steel and S39277 stainless steel are iron alloys. They have 75% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4931 steel and the bottom bar is S39277 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
250
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
28
Fatigue Strength, MPa 410
480
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
80
Tensile Strength: Ultimate (UTS), MPa 810
930
Tensile Strength: Yield (Proof), MPa 620
660

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Mechanical, °C 600
1100
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 24
16
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.8
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 11
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
23
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.9
4.2
Embodied Energy, MJ/kg 42
59
Embodied Water, L/kg 100
180

Common Calculations

PREN (Pitting Resistance) 16
43
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
240
Resilience: Unit (Modulus of Resilience), kJ/m3 970
1070
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29
33
Strength to Weight: Bending, points 25
27
Thermal Diffusivity, mm2/s 6.5
4.2
Thermal Shock Resistance, points 22
26

Alloy Composition

Carbon (C), % 0.2 to 0.26
0 to 0.025
Chromium (Cr), % 11.3 to 12.2
24 to 26
Copper (Cu), % 0
1.2 to 2.0
Iron (Fe), % 83.2 to 86.8
56.8 to 64.3
Manganese (Mn), % 0.5 to 0.8
0 to 0.8
Molybdenum (Mo), % 1.0 to 1.2
3.0 to 4.0
Nickel (Ni), % 0 to 1.0
6.5 to 8.0
Nitrogen (N), % 0
0.23 to 0.33
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.8
Sulfur (S), % 0 to 0.020
0 to 0.0020
Tungsten (W), % 0 to 0.5
0.8 to 1.2
Vanadium (V), % 0.25 to 0.35
0