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S31803 Stainless Steel vs. EN 1.7230 Steel

Both S31803 stainless steel and EN 1.7230 steel are iron alloys. They have 70% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is S31803 stainless steel and the bottom bar is EN 1.7230 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
220 to 270
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 29
11 to 12
Fatigue Strength, MPa 370
320 to 460
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 710
720 to 910
Tensile Strength: Yield (Proof), MPa 500
510 to 740

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1060
420
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
44
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 17
2.4
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.6
1.5
Embodied Energy, MJ/kg 49
20
Embodied Water, L/kg 160
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
79 to 97
Resilience: Unit (Modulus of Resilience), kJ/m3 630
700 to 1460
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25
26 to 32
Strength to Weight: Bending, points 23
23 to 27
Thermal Diffusivity, mm2/s 4.3
12
Thermal Shock Resistance, points 20
21 to 27

Alloy Composition

Carbon (C), % 0 to 0.030
0.3 to 0.37
Chromium (Cr), % 21 to 23
0.8 to 1.2
Iron (Fe), % 63.7 to 71.9
96.7 to 98.3
Manganese (Mn), % 0 to 2.0
0.5 to 0.8
Molybdenum (Mo), % 2.5 to 3.5
0.15 to 0.3
Nickel (Ni), % 4.5 to 6.5
0
Nitrogen (N), % 0.080 to 0.2
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.6
Sulfur (S), % 0 to 0.020
0 to 0.030