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EN 1.4024 Stainless Steel vs. EN 1.6781 Steel

Both EN 1.4024 stainless steel and EN 1.6781 steel are iron alloys. They have 88% of their average alloy composition in common. There are 30 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 1.4024 stainless steel and the bottom bar is EN 1.6781 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 15 to 22
17
Fatigue Strength, MPa 220 to 300
450
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 590 to 750
830
Tensile Strength: Yield (Proof), MPa 330 to 510
680

Thermal Properties

Latent Heat of Fusion, J/g 270
260
Maximum Temperature: Mechanical, °C 760
450
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 30
44
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
9.1

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
5.0
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 1.9
1.9
Embodied Energy, MJ/kg 27
25
Embodied Water, L/kg 100
60

Common Calculations

PREN (Pitting Resistance) 13
3.3
Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 110
130
Resilience: Unit (Modulus of Resilience), kJ/m3 280 to 660
1220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21 to 27
29
Strength to Weight: Bending, points 20 to 24
25
Thermal Diffusivity, mm2/s 8.1
12
Thermal Shock Resistance, points 21 to 26
24

Alloy Composition

Carbon (C), % 0.12 to 0.17
0.15 to 0.19
Chromium (Cr), % 12 to 14
1.3 to 1.8
Iron (Fe), % 83.8 to 87.9
92.6 to 94.6
Manganese (Mn), % 0 to 1.0
0.55 to 0.8
Molybdenum (Mo), % 0
0.45 to 0.6
Nickel (Ni), % 0
3.0 to 3.5
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.015