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SAE-AISI 1080 Steel vs. EN 1.1221 Steel

Both SAE-AISI 1080 steel and EN 1.1221 steel are iron alloys. Their average alloy composition is basically identical. There are 31 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 SAE-AISI 1080 steel and the bottom bar is EN 1.1221 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 260
210 to 250
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11
10 to 21
Fatigue Strength, MPa 300 to 360
240 to 340
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
72
Shear Strength, MPa 460 to 520
450 to 520
Tensile Strength: Ultimate (UTS), MPa 770 to 870
730 to 870
Tensile Strength: Yield (Proof), MPa 480 to 590
390 to 550

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 51
48
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.6
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 11
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
2.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.5
Embodied Energy, MJ/kg 19
19
Embodied Water, L/kg 46
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 80 to 84
67 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 610 to 920
410 to 800
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 27 to 31
26 to 31
Strength to Weight: Bending, points 24 to 26
23 to 26
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 25 to 29
23 to 28

Alloy Composition

Carbon (C), % 0.75 to 0.88
0.57 to 0.65
Chromium (Cr), % 0
0 to 0.4
Iron (Fe), % 98.1 to 98.7
97.1 to 98.8
Manganese (Mn), % 0.6 to 0.9
0.6 to 0.9
Molybdenum (Mo), % 0
0 to 0.1
Nickel (Ni), % 0
0 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0
0 to 0.4
Sulfur (S), % 0 to 0.050
0 to 0.035