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S40920 Stainless Steel vs. EN 1.6580 Steel

Both S40920 stainless steel and EN 1.6580 steel are iron alloys. They have a moderately high 90% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is S40920 stainless steel and the bottom bar is EN 1.6580 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
220 to 350
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22
11 to 19
Fatigue Strength, MPa 130
310 to 610
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
73
Shear Strength, MPa 270
450 to 700
Tensile Strength: Ultimate (UTS), MPa 430
720 to 1170
Tensile Strength: Yield (Proof), MPa 190
460 to 990

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 710
450
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 26
40
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
4.3
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.0
1.8
Embodied Energy, MJ/kg 28
23
Embodied Water, L/kg 94
59

Common Calculations

PREN (Pitting Resistance) 11
3.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 78
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 97
560 to 2590
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 15
26 to 41
Strength to Weight: Bending, points 16
23 to 31
Thermal Diffusivity, mm2/s 6.9
11
Thermal Shock Resistance, points 15
21 to 34

Alloy Composition

Carbon (C), % 0 to 0.030
0.26 to 0.34
Chromium (Cr), % 10.5 to 11.7
1.8 to 2.2
Iron (Fe), % 85.1 to 89.4
93.7 to 95.5
Manganese (Mn), % 0 to 1.0
0.3 to 0.6
Molybdenum (Mo), % 0
0.3 to 0.5
Nickel (Ni), % 0 to 0.5
1.8 to 2.2
Niobium (Nb), % 0 to 0.1
0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.020
0 to 0.035
Titanium (Ti), % 0.15 to 0.5
0