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SAE-AISI 4320 Steel vs. EN 1.6580 Steel

Both SAE-AISI 4320 steel and EN 1.6580 steel are iron alloys. They have a very high 98% of their average alloy composition in common. 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 4320 steel and the bottom bar is EN 1.6580 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 240
220 to 350
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21 to 29
11 to 19
Fatigue Strength, MPa 320
310 to 610
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 370 to 500
450 to 700
Tensile Strength: Ultimate (UTS), MPa 570 to 790
720 to 1170
Tensile Strength: Yield (Proof), MPa 430 to 460
460 to 990

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
450
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 46
40
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
4.3
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.7
1.8
Embodied Energy, MJ/kg 22
23
Embodied Water, L/kg 52
59

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 150
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 480 to 560
560 to 2590
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 20 to 28
26 to 41
Strength to Weight: Bending, points 19 to 24
23 to 31
Thermal Diffusivity, mm2/s 13
11
Thermal Shock Resistance, points 19 to 27
21 to 34

Alloy Composition

Carbon (C), % 0.17 to 0.22
0.26 to 0.34
Chromium (Cr), % 0.4 to 0.6
1.8 to 2.2
Iron (Fe), % 95.8 to 97
93.7 to 95.5
Manganese (Mn), % 0.45 to 0.65
0.3 to 0.6
Molybdenum (Mo), % 0.2 to 0.3
0.3 to 0.5
Nickel (Ni), % 1.7 to 2.0
1.8 to 2.2
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0.15 to 0.35
0 to 0.4
Sulfur (S), % 0 to 0.040
0 to 0.035

Comparable Variants