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EN 1.7108 Steel vs. S31277 Stainless Steel

Both EN 1.7108 steel and S31277 stainless steel are iron alloys. They have 42% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is EN 1.7108 steel and the bottom bar is S31277 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
80
Tensile Strength: Ultimate (UTS), MPa 670 to 2070
860

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Mechanical, °C 410
1100
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 480
460
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
36
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 1.5
6.7
Embodied Energy, MJ/kg 20
90
Embodied Water, L/kg 47
220

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 24 to 75
29
Strength to Weight: Bending, points 22 to 47
25
Thermal Shock Resistance, points 20 to 63
19

Alloy Composition

Carbon (C), % 0.57 to 0.65
0 to 0.020
Chromium (Cr), % 0.2 to 0.45
20.5 to 23
Copper (Cu), % 0
0.5 to 1.5
Iron (Fe), % 95.9 to 96.9
35.5 to 46.2
Manganese (Mn), % 0.7 to 1.0
0 to 3.0
Molybdenum (Mo), % 0
6.5 to 8.0
Nickel (Ni), % 0
26 to 28
Nitrogen (N), % 0
0.3 to 0.4
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 1.6 to 2.0
0 to 0.5
Sulfur (S), % 0 to 0.025
0 to 0.010