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EN 1.4490 Stainless Steel vs. EN 1.6580 Steel

Both EN 1.4490 stainless steel and EN 1.6580 steel are iron alloys. They have 71% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4490 stainless steel and the bottom bar is EN 1.6580 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
11 to 19
Fatigue Strength, MPa 210
310 to 610
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 560
720 to 1170
Tensile Strength: Yield (Proof), MPa 260
460 to 990

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 990
450
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
40
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 19
4.3
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.7
1.8
Embodied Energy, MJ/kg 52
23
Embodied Water, L/kg 150
59

Common Calculations

PREN (Pitting Resistance) 29
3.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 170
560 to 2590
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 20
26 to 41
Strength to Weight: Bending, points 19
23 to 31
Thermal Diffusivity, mm2/s 4.1
11
Thermal Shock Resistance, points 16
21 to 34

Alloy Composition

Carbon (C), % 0 to 0.030
0.26 to 0.34
Chromium (Cr), % 18 to 20
1.8 to 2.2
Iron (Fe), % 61.7 to 70.9
93.7 to 95.5
Manganese (Mn), % 0 to 2.0
0.3 to 0.6
Molybdenum (Mo), % 2.0 to 2.5
0.3 to 0.5
Nickel (Ni), % 9.0 to 12
1.8 to 2.2
Nitrogen (N), % 0.12 to 0.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 1.5
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.035