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EN 1.7231 Steel vs. S38815 Stainless Steel

Both EN 1.7231 steel and S38815 stainless steel are iron alloys. They have 64% of their average alloy composition in common. There are 26 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 1.7231 steel and the bottom bar is S38815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240 to 280
190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 12
34
Fatigue Strength, MPa 360 to 500
230
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
74
Tensile Strength: Ultimate (UTS), MPa 790 to 930
610
Tensile Strength: Yield (Proof), MPa 570 to 800
290

Thermal Properties

Latent Heat of Fusion, J/g 250
370
Maximum Temperature: Mechanical, °C 420
860
Melting Completion (Liquidus), °C 1460
1360
Melting Onset (Solidus), °C 1420
1310
Specific Heat Capacity, J/kg-K 470
500
Thermal Expansion, µm/m-K 13
15

Otherwise Unclassified Properties

Base Metal Price, % relative 2.5
19
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 1.5
3.8
Embodied Energy, MJ/kg 20
54
Embodied Water, L/kg 51
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 100
170
Resilience: Unit (Modulus of Resilience), kJ/m3 870 to 1700
220
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 28 to 33
22
Strength to Weight: Bending, points 24 to 27
21
Thermal Shock Resistance, points 23 to 27
15

Alloy Composition

Aluminum (Al), % 0
0 to 0.3
Carbon (C), % 0.38 to 0.45
0 to 0.030
Chromium (Cr), % 0.8 to 1.2
13 to 15
Copper (Cu), % 0
0.75 to 1.5
Iron (Fe), % 96.4 to 98.1
56.1 to 67
Manganese (Mn), % 0.6 to 1.0
0 to 2.0
Molybdenum (Mo), % 0.15 to 0.3
0.75 to 1.5
Nickel (Ni), % 0
13 to 17
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.6
5.5 to 6.5
Sulfur (S), % 0 to 0.030
0 to 0.020