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EN 1.5508 Steel vs. EN 1.5535 Steel

Both EN 1.5508 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 1.5508 steel and the bottom bar is EN 1.5535 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130 to 180
130 to 180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 20
11 to 22
Fatigue Strength, MPa 210 to 320
210 to 320
Poisson's Ratio 0.29
0.29
Reduction in Area, % 62 to 74
62 to 72
Shear Modulus, GPa 73
73
Shear Strength, MPa 300 to 360
320 to 370
Tensile Strength: Ultimate (UTS), MPa 420 to 1460
450 to 1490
Tensile Strength: Yield (Proof), MPa 310 to 490
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 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
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
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44 to 230
45 to 250
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 640
240 to 680
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 15 to 52
16 to 53
Strength to Weight: Bending, points 16 to 36
17 to 37
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 12 to 43
13 to 44

Alloy Composition

Boron (B), % 0.00080 to 0.0050
0.00080 to 0.0050
Carbon (C), % 0.2 to 0.25
0.2 to 0.25
Chromium (Cr), % 0 to 0.3
0 to 0.3
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 97.9 to 99.199
97.6 to 98.9
Manganese (Mn), % 0.6 to 0.9
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