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EN 1.7139 Steel vs. S31803 Stainless Steel

Both EN 1.7139 steel and S31803 stainless steel are iron alloys. They have 70% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is EN 1.7139 steel and the bottom bar is S31803 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
260
Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
80
Tensile Strength: Ultimate (UTS), MPa 480 to 1390
710

Thermal Properties

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

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
17
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
3.6
Embodied Energy, MJ/kg 19
49
Embodied Water, L/kg 51
160

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17 to 49
25
Strength to Weight: Bending, points 17 to 35
23
Thermal Diffusivity, mm2/s 12
4.3
Thermal Shock Resistance, points 14 to 41
20

Alloy Composition

Carbon (C), % 0.14 to 0.19
0 to 0.030
Chromium (Cr), % 0.8 to 1.1
21 to 23
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 96.8 to 98
63.7 to 71.9
Manganese (Mn), % 1.0 to 1.3
0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0
4.5 to 6.5
Nitrogen (N), % 0
0.080 to 0.2
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.3
0 to 1.0
Sulfur (S), % 0.020 to 0.040
0 to 0.020