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S31730 Stainless Steel vs. EN 1.8515 Steel

Both S31730 stainless steel and EN 1.8515 steel are iron alloys. They have 61% of their average alloy composition in common. There are 28 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 S31730 stainless steel and the bottom bar is EN 1.8515 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
340
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
11
Fatigue Strength, MPa 170
580
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
74
Shear Strength, MPa 370
680
Tensile Strength: Ultimate (UTS), MPa 540
1130
Tensile Strength: Yield (Proof), MPa 200
940

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 990
470
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 24
3.5
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 4.6
1.6
Embodied Energy, MJ/kg 63
22
Embodied Water, L/kg 180
60

Common Calculations

PREN (Pitting Resistance) 30
4.4
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
120
Resilience: Unit (Modulus of Resilience), kJ/m3 99
2310
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19
40
Strength to Weight: Bending, points 18
31
Thermal Shock Resistance, points 12
33

Alloy Composition

Carbon (C), % 0 to 0.030
0.28 to 0.35
Chromium (Cr), % 17 to 19
2.8 to 3.3
Copper (Cu), % 4.0 to 5.0
0
Iron (Fe), % 52.4 to 61
94.7 to 96.5
Manganese (Mn), % 0 to 2.0
0.4 to 0.7
Molybdenum (Mo), % 3.0 to 4.0
0.3 to 0.5
Nickel (Ni), % 15 to 16.5
0 to 0.3
Nitrogen (N), % 0 to 0.045
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.010
0 to 0.035