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EN 1.5502 Steel vs. EN 1.1122 Steel

Both EN 1.5502 steel and EN 1.1122 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.5502 steel and the bottom bar is EN 1.1122 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120 to 160
100 to 130
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12 to 20
12 to 21
Fatigue Strength, MPa 190 to 290
170 to 260
Poisson's Ratio 0.29
0.29
Reduction in Area, % 62 to 76
63 to 73
Shear Modulus, GPa 73
73
Shear Strength, MPa 280 to 330
240 to 290
Tensile Strength: Ultimate (UTS), MPa 400 to 1380
340 to 460
Tensile Strength: Yield (Proof), MPa 270 to 440
240 to 370

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 13
12

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
1.8
Density, g/cm3 7.8
7.9
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 41 to 210
36 to 89
Resilience: Unit (Modulus of Resilience), kJ/m3 200 to 520
160 to 360
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 14 to 49
12 to 16
Strength to Weight: Bending, points 15 to 35
14 to 17
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 12 to 40
11 to 15

Alloy Composition

Boron (B), % 0.00080 to 0.0050
0
Carbon (C), % 0.15 to 0.2
0.080 to 0.12
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 98 to 99.249
98.7 to 99.62
Manganese (Mn), % 0.6 to 0.9
0.3 to 0.6
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