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EN 1.0303 Steel vs. EN 1.5521 Steel

Both EN 1.0303 steel and EN 1.5521 steel are iron alloys. They have a very high 99% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.0303 steel and the bottom bar is EN 1.5521 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 84 to 120
130 to 180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12 to 25
11 to 21
Fatigue Strength, MPa 150 to 230
210 to 310
Poisson's Ratio 0.29
0.29
Reduction in Area, % 75 to 86
59 to 72
Shear Modulus, GPa 73
73
Shear Strength, MPa 220 to 260
310 to 360
Tensile Strength: Ultimate (UTS), MPa 290 to 410
430 to 1390
Tensile Strength: Yield (Proof), MPa 200 to 320
300 to 490

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
51
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
44 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 270
250 to 630
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 10 to 15
15 to 49
Strength to Weight: Bending, points 12 to 16
16 to 35
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 9.2 to 13
13 to 41

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
0.16 to 0.2
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 99.335 to 99.71
98 to 98.9
Manganese (Mn), % 0.25 to 0.4
0.9 to 1.2
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