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EN 1.0031 Steel vs. S31730 Stainless Steel

Both EN 1.0031 steel and S31730 stainless steel are iron alloys. They have 57% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.0031 steel and the bottom bar is S31730 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 89
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 28
40
Fatigue Strength, MPa 160
170
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Shear Strength, MPa 200
370
Tensile Strength: Ultimate (UTS), MPa 310
540
Tensile Strength: Yield (Proof), MPa 210
200

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 400
990
Melting Completion (Liquidus), °C 1470
1430
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
24
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 1.4
4.6
Embodied Energy, MJ/kg 18
63
Embodied Water, L/kg 45
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78
170
Resilience: Unit (Modulus of Resilience), kJ/m3 120
99
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 11
19
Strength to Weight: Bending, points 13
18
Thermal Shock Resistance, points 9.8
12

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.030
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 98.8 to 100
52.4 to 61
Manganese (Mn), % 0 to 0.7
0 to 2.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 0
15 to 16.5
Nitrogen (N), % 0
0 to 0.045
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.045
0 to 0.010