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EN 1.0303 Steel vs. EN 1.5502 Steel

Both EN 1.0303 steel and EN 1.5502 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.0303 steel and the bottom bar is EN 1.5502 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 84 to 120
120 to 160
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12 to 25
12 to 20
Fatigue Strength, MPa 150 to 230
190 to 290
Poisson's Ratio 0.29
0.29
Reduction in Area, % 75 to 86
62 to 76
Shear Modulus, GPa 73
73
Shear Strength, MPa 220 to 260
280 to 330
Tensile Strength: Ultimate (UTS), MPa 290 to 410
400 to 1380
Tensile Strength: Yield (Proof), MPa 200 to 320
270 to 440

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 53
52
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.9
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 7.9
8.1

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
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 30 to 94
41 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 270
200 to 520
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 10 to 15
14 to 49
Strength to Weight: Bending, points 12 to 16
15 to 35
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 9.2 to 13
12 to 40

Alloy Composition

Aluminum (Al), % 0.020 to 0.060
0
Boron (B), % 0
0.00080 to 0.0050
Carbon (C), % 0.020 to 0.060
0.15 to 0.2
Chromium (Cr), % 0
0 to 0.3
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 99.335 to 99.71
98 to 99.249
Manganese (Mn), % 0.25 to 0.4
0.6 to 0.9
Phosphorus (P), % 0 to 0.020
0 to 0.025
Silicon (Si), % 0 to 0.1
0 to 0.3
Sulfur (S), % 0 to 0.025
0 to 0.025

Comparable Variants