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EN 1.5508 Steel vs. SAE-AISI 1020 Steel

Both EN 1.5508 steel and SAE-AISI 1020 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.5508 steel and the bottom bar is SAE-AISI 1020 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130 to 180
120 to 130
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 20
17 to 28
Fatigue Strength, MPa 210 to 320
180 to 250
Poisson's Ratio 0.29
0.29
Reduction in Area, % 62 to 74
45 to 57
Shear Modulus, GPa 73
73
Shear Strength, MPa 300 to 360
280
Tensile Strength: Ultimate (UTS), MPa 420 to 1460
430 to 460
Tensile Strength: Yield (Proof), MPa 310 to 490
240 to 380

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
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 51
52
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
11
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
12

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
1.8
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 19
18
Embodied Water, L/kg 47
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44 to 230
72 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 640
150 to 380
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 15 to 52
15 to 16
Strength to Weight: Bending, points 16 to 36
16 to 17
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 12 to 43
13 to 14

Alloy Composition

Boron (B), % 0.00080 to 0.0050
0
Carbon (C), % 0.2 to 0.25
0.18 to 0.23
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 97.9 to 99.199
99.08 to 99.52
Manganese (Mn), % 0.6 to 0.9
0.3 to 0.6
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.3
0
Sulfur (S), % 0 to 0.025
0 to 0.050

Comparable Variants