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EN 1.3543 Stainless Steel vs. EN 1.7231 Steel

Both EN 1.3543 stainless steel and EN 1.7231 steel are iron alloys. They have 84% of their average alloy composition in common. There are 25 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 EN 1.3543 stainless steel and the bottom bar is EN 1.7231 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
240 to 280
Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 730
790 to 930

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 870
420
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 22
46
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
2.5
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.3
1.5
Embodied Energy, MJ/kg 32
20
Embodied Water, L/kg 120
51

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27
28 to 33
Strength to Weight: Bending, points 24
24 to 27
Thermal Diffusivity, mm2/s 6.1
12
Thermal Shock Resistance, points 26
23 to 27

Alloy Composition

Carbon (C), % 1.0 to 1.2
0.38 to 0.45
Chromium (Cr), % 16 to 18
0.8 to 1.2
Iron (Fe), % 79.1 to 83.6
96.4 to 98.1
Manganese (Mn), % 0 to 1.0
0.6 to 1.0
Molybdenum (Mo), % 0.4 to 0.8
0.15 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030