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S31730 Stainless Steel vs. EN 1.0303 Steel

Both S31730 stainless steel and EN 1.0303 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 (8, in this case) are not shown.

For each property being compared, the top bar is S31730 stainless steel and the bottom bar is EN 1.0303 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
84 to 120
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
12 to 25
Fatigue Strength, MPa 170
150 to 230
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 370
220 to 260
Tensile Strength: Ultimate (UTS), MPa 540
290 to 410
Tensile Strength: Yield (Proof), MPa 200
200 to 320

Thermal Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 24
1.8
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 4.6
1.4
Embodied Energy, MJ/kg 63
18
Embodied Water, L/kg 180
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
30 to 94
Resilience: Unit (Modulus of Resilience), kJ/m3 99
110 to 270
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19
10 to 15
Strength to Weight: Bending, points 18
12 to 16
Thermal Shock Resistance, points 12
9.2 to 13

Alloy Composition

Aluminum (Al), % 0
0.020 to 0.060
Carbon (C), % 0 to 0.030
0.020 to 0.060
Chromium (Cr), % 17 to 19
0
Copper (Cu), % 4.0 to 5.0
0
Iron (Fe), % 52.4 to 61
99.335 to 99.71
Manganese (Mn), % 0 to 2.0
0.25 to 0.4
Molybdenum (Mo), % 3.0 to 4.0
0
Nickel (Ni), % 15 to 16.5
0
Nitrogen (N), % 0 to 0.045
0
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.1
Sulfur (S), % 0 to 0.010
0 to 0.025