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EN 1.4981 Stainless Steel vs. EN 1.6580 Steel

Both EN 1.4981 stainless steel and EN 1.6580 steel are iron alloys. They have 68% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.4981 stainless steel and the bottom bar is EN 1.6580 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
220 to 350
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 39
11 to 19
Fatigue Strength, MPa 210
310 to 610
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 420
450 to 700
Tensile Strength: Ultimate (UTS), MPa 610
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 940
450
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 16
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 25
4.3
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 4.8
1.8
Embodied Energy, MJ/kg 67
23
Embodied Water, L/kg 150
59

Common Calculations

PREN (Pitting Resistance) 22
3.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 150
560 to 2590
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21
26 to 41
Strength to Weight: Bending, points 20
23 to 31
Thermal Diffusivity, mm2/s 4.3
11
Thermal Shock Resistance, points 14
21 to 34

Alloy Composition

Carbon (C), % 0.040 to 0.1
0.26 to 0.34
Chromium (Cr), % 15.5 to 17.5
1.8 to 2.2
Iron (Fe), % 59.6 to 66.7
93.7 to 95.5
Manganese (Mn), % 0 to 1.5
0.3 to 0.6
Molybdenum (Mo), % 1.6 to 2.0
0.3 to 0.5
Nickel (Ni), % 15.5 to 17.5
1.8 to 2.2
Niobium (Nb), % 0.4 to 1.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0.3 to 0.6
0 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.035