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S82031 Stainless Steel vs. EN 1.4318 Stainless Steel

Both S82031 stainless steel and EN 1.4318 stainless steel are iron alloys. They have a very high 95% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is S82031 stainless steel and the bottom bar is EN 1.4318 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
44
Fatigue Strength, MPa 490
340
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
77
Shear Strength, MPa 540
520
Tensile Strength: Ultimate (UTS), MPa 780
740
Tensile Strength: Yield (Proof), MPa 570
380

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 430
410
Maximum Temperature: Mechanical, °C 980
910
Melting Completion (Liquidus), °C 1430
1430
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 13
13
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.8
2.8
Embodied Energy, MJ/kg 39
39
Embodied Water, L/kg 150
130

Common Calculations

PREN (Pitting Resistance) 27
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 280
280
Resilience: Unit (Modulus of Resilience), kJ/m3 820
360
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
27
Strength to Weight: Bending, points 24
23
Thermal Diffusivity, mm2/s 3.9
4.0
Thermal Shock Resistance, points 22
17

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.030
Chromium (Cr), % 19 to 22
16.5 to 18.5
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 68 to 78.3
70.2 to 77.4
Manganese (Mn), % 0 to 2.5
0 to 2.0
Molybdenum (Mo), % 0.6 to 1.4
0
Nickel (Ni), % 2.0 to 4.0
6.0 to 8.0
Nitrogen (N), % 0.14 to 0.24
0.1 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.0050
0 to 0.015