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SAE-AISI 4320 Steel vs. EN 1.5805 Steel

Both SAE-AISI 4320 steel and EN 1.5805 steel are iron alloys. Their average alloy composition is basically identical. There are 25 material properties with values for both materials. Properties with values for just one material (6, 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 1.5805 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 240
140 to 170
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 570 to 790
460 to 1180

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
430
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
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
3.1
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.7
1.6
Embodied Energy, MJ/kg 22
21
Embodied Water, L/kg 52
53

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 20 to 28
16 to 42
Strength to Weight: Bending, points 19 to 24
17 to 32
Thermal Diffusivity, mm2/s 13
11
Thermal Shock Resistance, points 19 to 27
13 to 35

Alloy Composition

Carbon (C), % 0.17 to 0.22
0.070 to 0.12
Chromium (Cr), % 0.4 to 0.6
0.9 to 1.2
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 95.8 to 97
95.7 to 97.2
Manganese (Mn), % 0.45 to 0.65
0.6 to 0.9
Molybdenum (Mo), % 0.2 to 0.3
0
Nickel (Ni), % 1.7 to 2.0
1.2 to 1.5
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0.15 to 0.35
0 to 0.3
Sulfur (S), % 0 to 0.040
0 to 0.025