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EN 1.5508 Steel vs. SAE-AISI 1040 Steel

Both EN 1.5508 steel and SAE-AISI 1040 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 1040 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130 to 180
160 to 180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 20
13 to 20
Fatigue Strength, MPa 210 to 320
220 to 340
Poisson's Ratio 0.29
0.29
Reduction in Area, % 62 to 74
40 to 45
Shear Modulus, GPa 73
73
Shear Strength, MPa 300 to 360
350 to 390
Tensile Strength: Ultimate (UTS), MPa 420 to 1460
570 to 640
Tensile Strength: Yield (Proof), MPa 310 to 490
320 to 530

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
51
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 19
18
Embodied Water, L/kg 47
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44 to 230
79 to 96
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 640
270 to 760
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 15 to 52
20 to 23
Strength to Weight: Bending, points 16 to 36
19 to 21
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 12 to 43
18 to 20

Alloy Composition

Boron (B), % 0.00080 to 0.0050
0
Carbon (C), % 0.2 to 0.25
0.37 to 0.44
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 97.9 to 99.199
98.6 to 99.03
Manganese (Mn), % 0.6 to 0.9
0.6 to 0.9
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