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EN 1.7390 Steel vs. S82031 Stainless Steel

Both EN 1.7390 steel and S82031 stainless steel are iron alloys. They have 79% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.7390 steel and the bottom bar is S82031 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 16
39
Fatigue Strength, MPa 310
490
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
78
Shear Strength, MPa 440
540
Tensile Strength: Ultimate (UTS), MPa 710
780
Tensile Strength: Yield (Proof), MPa 480
570

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Maximum Temperature: Mechanical, °C 510
980
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 40
15
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.1
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 9.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 4.3
13
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.7
2.8
Embodied Energy, MJ/kg 23
39
Embodied Water, L/kg 69
150

Common Calculations

PREN (Pitting Resistance) 6.8
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
280
Resilience: Unit (Modulus of Resilience), kJ/m3 600
820
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25
28
Strength to Weight: Bending, points 23
24
Thermal Diffusivity, mm2/s 11
3.9
Thermal Shock Resistance, points 20
22

Alloy Composition

Carbon (C), % 0 to 0.18
0 to 0.050
Chromium (Cr), % 4.0 to 6.0
19 to 22
Copper (Cu), % 0
0 to 1.0
Iron (Fe), % 91.9 to 95.3
68 to 78.3
Manganese (Mn), % 0.3 to 0.8
0 to 2.5
Molybdenum (Mo), % 0.45 to 0.65
0.6 to 1.4
Nickel (Ni), % 0
2.0 to 4.0
Nitrogen (N), % 0
0.14 to 0.24
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 0.8
Sulfur (S), % 0 to 0.015
0 to 0.0050