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SAE-AISI 1080 Steel vs. EN 1.4318 Stainless Steel

Both SAE-AISI 1080 steel and EN 1.4318 stainless steel are iron alloys. They have 75% of their average alloy composition in common. There are 31 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 SAE-AISI 1080 steel and the bottom bar is EN 1.4318 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 260
230
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11
44
Fatigue Strength, MPa 300 to 360
340
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
77
Shear Strength, MPa 460 to 520
520
Tensile Strength: Ultimate (UTS), MPa 770 to 870
740
Tensile Strength: Yield (Proof), MPa 480 to 590
380

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 400
910
Melting Completion (Liquidus), °C 1450
1430
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
15
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.6
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 11
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
13
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
2.8
Embodied Energy, MJ/kg 19
39
Embodied Water, L/kg 46
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 80 to 84
280
Resilience: Unit (Modulus of Resilience), kJ/m3 610 to 920
360
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 27 to 31
27
Strength to Weight: Bending, points 24 to 26
23
Thermal Diffusivity, mm2/s 14
4.0
Thermal Shock Resistance, points 25 to 29
17

Alloy Composition

Carbon (C), % 0.75 to 0.88
0 to 0.030
Chromium (Cr), % 0
16.5 to 18.5
Iron (Fe), % 98.1 to 98.7
70.2 to 77.4
Manganese (Mn), % 0.6 to 0.9
0 to 2.0
Nickel (Ni), % 0
6.0 to 8.0
Nitrogen (N), % 0
0.1 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0 to 0.050
0 to 0.015