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EN 1.4446 Stainless Steel vs. EN 1.6580 Steel

Both EN 1.4446 stainless steel and EN 1.6580 steel are iron alloys. They have 68% 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 EN 1.4446 stainless steel and the bottom bar is EN 1.6580 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
220 to 350
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 23
11 to 19
Fatigue Strength, MPa 160
310 to 610
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 490
720 to 1170
Tensile Strength: Yield (Proof), MPa 240
460 to 990

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 980
450
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 14
40
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 22
4.3
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 4.5
1.8
Embodied Energy, MJ/kg 60
23
Embodied Water, L/kg 160
59

Common Calculations

PREN (Pitting Resistance) 34
3.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 93
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 140
560 to 2590
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 17
26 to 41
Strength to Weight: Bending, points 17
23 to 31
Thermal Diffusivity, mm2/s 3.6
11
Thermal Shock Resistance, points 11
21 to 34

Alloy Composition

Carbon (C), % 0 to 0.030
0.26 to 0.34
Chromium (Cr), % 16.5 to 18.5
1.8 to 2.2
Iron (Fe), % 59.7 to 66.9
93.7 to 95.5
Manganese (Mn), % 0 to 1.5
0.3 to 0.6
Molybdenum (Mo), % 4.0 to 4.5
0.3 to 0.5
Nickel (Ni), % 12.5 to 14.5
1.8 to 2.2
Nitrogen (N), % 0.12 to 0.22
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 0.030
0 to 0.035