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EN 1.1122 Steel vs. EN 1.5501 Steel

Both EN 1.1122 steel and EN 1.5501 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.1122 steel and the bottom bar is EN 1.5501 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 100 to 130
120 to 150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12 to 21
12 to 17
Fatigue Strength, MPa 170 to 260
180 to 270
Poisson's Ratio 0.29
0.29
Reduction in Area, % 63 to 73
63 to 73
Shear Modulus, GPa 73
73
Shear Strength, MPa 240 to 290
270 to 310
Tensile Strength: Ultimate (UTS), MPa 340 to 460
390 to 510
Tensile Strength: Yield (Proof), MPa 240 to 370
260 to 420

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 12
13

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36 to 89
40 to 83
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 360
190 to 460
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 12 to 16
14 to 18
Strength to Weight: Bending, points 14 to 17
15 to 18
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 11 to 15
11 to 15

Alloy Composition

Boron (B), % 0
0.00080 to 0.0050
Carbon (C), % 0.080 to 0.12
0.13 to 0.16
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 98.7 to 99.62
98.4 to 99.269
Manganese (Mn), % 0.3 to 0.6
0.6 to 0.8
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.3
0 to 0.3
Sulfur (S), % 0 to 0.025
0 to 0.025

Comparable Variants