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EN 1.5508 Steel vs. SAE-AISI 50B50 Steel

Both EN 1.5508 steel and SAE-AISI 50B50 steel are iron alloys. Their average alloy composition is basically identical. 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 1.5508 steel and the bottom bar is SAE-AISI 50B50 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130 to 180
180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 20
22
Fatigue Strength, MPa 210 to 320
260
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 300 to 360
370
Tensile Strength: Ultimate (UTS), MPa 420 to 1460
590
Tensile Strength: Yield (Proof), MPa 310 to 490
370

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
410
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 51
45
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
2.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 19
19
Embodied Water, L/kg 47
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44 to 230
110
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 640
370
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 15 to 52
21
Strength to Weight: Bending, points 16 to 36
20
Thermal Diffusivity, mm2/s 14
12
Thermal Shock Resistance, points 12 to 43
17

Alloy Composition

Boron (B), % 0.00080 to 0.0050
0.00050 to 0.0030
Carbon (C), % 0.2 to 0.25
0.48 to 0.53
Chromium (Cr), % 0 to 0.3
0.4 to 0.6
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 97.9 to 99.199
97.4 to 98.2
Manganese (Mn), % 0.6 to 0.9
0.75 to 1.0
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0 to 0.3
0.15 to 0.35
Sulfur (S), % 0 to 0.025
0 to 0.040