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EN 1.5522 Steel vs. SAE-AISI 1144 Steel

Both EN 1.5522 steel and SAE-AISI 1144 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.5522 steel and the bottom bar is SAE-AISI 1144 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 190
220 to 230
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 21
11 to 17
Fatigue Strength, MPa 210 to 330
280 to 430
Poisson's Ratio 0.29
0.29
Reduction in Area, % 59 to 69
34 to 40
Shear Modulus, GPa 73
72
Shear Strength, MPa 320 to 380
460 to 510
Tensile Strength: Ultimate (UTS), MPa 450 to 1490
750 to 840
Tensile Strength: Yield (Proof), MPa 300 to 520
420 to 690

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 51
51
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
1.9
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
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 45 to 250
91 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 250 to 720
480 to 1290
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 16 to 53
27 to 30
Strength to Weight: Bending, points 17 to 37
23 to 25
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 13 to 44
22 to 24

Alloy Composition

Boron (B), % 0.00080 to 0.0050
0
Carbon (C), % 0.2 to 0.24
0.4 to 0.48
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 98 to 98.9
97.5 to 98
Manganese (Mn), % 0.9 to 1.2
1.4 to 1.7
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.3
0
Sulfur (S), % 0 to 0.025
0.24 to 0.33

Comparable Variants