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SAE-AISI 4820 Steel vs. EN 1.8505 Steel

Both SAE-AISI 4820 steel and EN 1.8505 steel are iron alloys. They have a very high 96% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 4820 steel and the bottom bar is EN 1.8505 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
320
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
13
Fatigue Strength, MPa 260
540
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 360
630
Tensile Strength: Ultimate (UTS), MPa 570
1050
Tensile Strength: Yield (Proof), MPa 370
860

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 410
440
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
39
Thermal Expansion, µm/m-K 11
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 4.3
2.8
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.8
1.6
Embodied Energy, MJ/kg 24
22
Embodied Water, L/kg 53
65

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
120
Resilience: Unit (Modulus of Resilience), kJ/m3 370
1950
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 20
37
Strength to Weight: Bending, points 19
30
Thermal Diffusivity, mm2/s 14
11
Thermal Shock Resistance, points 19
31

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.2
Carbon (C), % 0.18 to 0.23
0.28 to 0.35
Chromium (Cr), % 0
1.5 to 1.8
Iron (Fe), % 94.6 to 95.7
95.4 to 97.1
Manganese (Mn), % 0.5 to 0.7
0.4 to 0.7
Molybdenum (Mo), % 0.2 to 0.3
0.2 to 0.4
Nickel (Ni), % 3.3 to 3.8
0
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0.15 to 0.35
0 to 0.4
Sulfur (S), % 0 to 0.040
0 to 0.035