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S31266 Stainless Steel vs. EN 1.6580 Steel

Both S31266 stainless steel and EN 1.6580 steel are iron alloys. They have 45% of their average alloy composition in common. There are 31 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 S31266 stainless steel and the bottom bar is EN 1.6580 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 40
11 to 19
Fatigue Strength, MPa 400
310 to 610
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 81
73
Shear Strength, MPa 590
450 to 700
Tensile Strength: Ultimate (UTS), MPa 860
720 to 1170
Tensile Strength: Yield (Proof), MPa 470
460 to 990

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
450
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 12
40
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 37
4.3
Density, g/cm3 8.2
7.9
Embodied Carbon, kg CO2/kg material 6.5
1.8
Embodied Energy, MJ/kg 89
23
Embodied Water, L/kg 220
59

Common Calculations

PREN (Pitting Resistance) 54
3.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 540
560 to 2590
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 29
26 to 41
Strength to Weight: Bending, points 24
23 to 31
Thermal Diffusivity, mm2/s 3.1
11
Thermal Shock Resistance, points 18
21 to 34

Alloy Composition

Carbon (C), % 0 to 0.030
0.26 to 0.34
Chromium (Cr), % 23 to 25
1.8 to 2.2
Copper (Cu), % 1.0 to 2.5
0
Iron (Fe), % 34.1 to 46
93.7 to 95.5
Manganese (Mn), % 2.0 to 4.0
0.3 to 0.6
Molybdenum (Mo), % 5.2 to 6.2
0.3 to 0.5
Nickel (Ni), % 21 to 24
1.8 to 2.2
Nitrogen (N), % 0.35 to 0.6
0
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.020
0 to 0.035
Tungsten (W), % 1.5 to 2.5
0