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SAE-AISI 4720 Steel vs. EN 1.8507 Steel

Both SAE-AISI 4720 steel and EN 1.8507 steel are iron alloys. They have a very high 99% 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 4720 steel and the bottom bar is EN 1.8507 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
270
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 25
16
Fatigue Strength, MPa 260
440
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
72
Shear Strength, MPa 310
550
Tensile Strength: Ultimate (UTS), MPa 490
900
Tensile Strength: Yield (Proof), MPa 350
670

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 410
430
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 39
41
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
2.5
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.6
Embodied Energy, MJ/kg 21
21
Embodied Water, L/kg 50
63

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
130
Resilience: Unit (Modulus of Resilience), kJ/m3 330
1210
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
32
Strength to Weight: Bending, points 18
27
Thermal Diffusivity, mm2/s 10
11
Thermal Shock Resistance, points 14
26

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.2
Carbon (C), % 0.17 to 0.22
0.3 to 0.37
Chromium (Cr), % 0.35 to 0.55
1.0 to 1.3
Iron (Fe), % 96.7 to 97.8
96.1 to 97.7
Manganese (Mn), % 0.5 to 0.7
0.4 to 0.7
Molybdenum (Mo), % 0.15 to 0.25
0.15 to 0.25
Nickel (Ni), % 0.9 to 1.2
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