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EN 1.6580 Steel vs. SAE-AISI 50B44 Steel

Both EN 1.6580 steel and SAE-AISI 50B44 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 (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.6580 steel and the bottom bar is SAE-AISI 50B44 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 350
170
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 19
22
Fatigue Strength, MPa 310 to 610
250
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 450 to 700
360
Tensile Strength: Ultimate (UTS), MPa 720 to 1170
570
Tensile Strength: Yield (Proof), MPa 460 to 990
360

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 450
410
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 40
46
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 4.3
2.0
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.8
1.4
Embodied Energy, MJ/kg 23
19
Embodied Water, L/kg 59
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
110
Resilience: Unit (Modulus of Resilience), kJ/m3 560 to 2590
350
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26 to 41
20
Strength to Weight: Bending, points 23 to 31
20
Thermal Diffusivity, mm2/s 11
12
Thermal Shock Resistance, points 21 to 34
17

Alloy Composition

Boron (B), % 0
0.00050 to 0.0030
Carbon (C), % 0.26 to 0.34
0.43 to 0.48
Chromium (Cr), % 1.8 to 2.2
0.2 to 0.6
Iron (Fe), % 93.7 to 95.5
97.5 to 98.5
Manganese (Mn), % 0.3 to 0.6
0.75 to 1.0
Molybdenum (Mo), % 0.3 to 0.5
0
Nickel (Ni), % 1.8 to 2.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 0.4
0.15 to 0.35
Sulfur (S), % 0 to 0.035
0 to 0.040