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EN 1.1122 Steel vs. EN 1.5535 Steel

Both EN 1.1122 steel and EN 1.5535 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 1.5535 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 100 to 130
130 to 180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12 to 21
11 to 22
Fatigue Strength, MPa 170 to 260
210 to 320
Poisson's Ratio 0.29
0.29
Reduction in Area, % 63 to 73
62 to 72
Shear Modulus, GPa 73
73
Shear Strength, MPa 240 to 290
320 to 370
Tensile Strength: Ultimate (UTS), MPa 340 to 460
450 to 1490
Tensile Strength: Yield (Proof), MPa 240 to 370
300 to 500

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
50
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
8.2

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
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36 to 89
45 to 250
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 360
240 to 680
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 12 to 16
16 to 53
Strength to Weight: Bending, points 14 to 17
17 to 37
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 11 to 15
13 to 44

Alloy Composition

Boron (B), % 0
0.00080 to 0.0050
Carbon (C), % 0.080 to 0.12
0.2 to 0.25
Chromium (Cr), % 0
0 to 0.3
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 98.7 to 99.62
97.6 to 98.9
Manganese (Mn), % 0.3 to 0.6
0.9 to 1.2
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