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EN 1.7218 Steel vs. S38815 Stainless Steel

Both EN 1.7218 steel and S38815 stainless steel are iron alloys. They have 64% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is EN 1.7218 steel and the bottom bar is S38815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 230
190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
74
Tensile Strength: Ultimate (UTS), MPa 500 to 1550
610

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 2.6
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 52
140

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 18 to 55
22
Strength to Weight: Bending, points 18 to 38
21
Thermal Shock Resistance, points 15 to 46
15

Alloy Composition

Aluminum (Al), % 0 to 0.040
0 to 0.3
Carbon (C), % 0.22 to 0.29
0 to 0.030
Chromium (Cr), % 0.9 to 1.2
13 to 15
Copper (Cu), % 0 to 0.3
0.75 to 1.5
Iron (Fe), % 96.2 to 98.1
56.1 to 67
Manganese (Mn), % 0.6 to 0.9
0 to 2.0
Molybdenum (Mo), % 0.15 to 0.3
0.75 to 1.5
Nickel (Ni), % 0 to 0.3
13 to 17
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 0.4
5.5 to 6.5
Sulfur (S), % 0 to 0.035
0 to 0.020