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SAE-AISI 1018 Steel vs. EN 1.5522 Steel

Both SAE-AISI 1018 steel and EN 1.5522 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is SAE-AISI 1018 steel and the bottom bar is EN 1.5522 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130 to 140
140 to 190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17 to 27
11 to 21
Fatigue Strength, MPa 180 to 270
210 to 330
Poisson's Ratio 0.29
0.29
Reduction in Area, % 45 to 57
59 to 69
Shear Modulus, GPa 73
73
Shear Strength, MPa 280 to 300
320 to 380
Tensile Strength: Ultimate (UTS), MPa 430 to 480
450 to 1490
Tensile Strength: Yield (Proof), MPa 240 to 400
300 to 520

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 52
51
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
1.9
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 18
19
Embodied Water, L/kg 46
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 75 to 100
45 to 250
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 430
250 to 720
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 15 to 17
16 to 53
Strength to Weight: Bending, points 16 to 17
17 to 37
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 14 to 15
13 to 44

Alloy Composition

Boron (B), % 0
0.00080 to 0.0050
Carbon (C), % 0.15 to 0.2
0.2 to 0.24
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 98.8 to 99.25
98 to 98.9
Manganese (Mn), % 0.6 to 0.9
0.9 to 1.2
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0
0 to 0.3
Sulfur (S), % 0 to 0.050
0 to 0.025

Comparable Variants