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EN 1.0044 Steel vs. EN 1.0503 Steel

Both EN 1.0044 steel and EN 1.0503 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.0044 steel and the bottom bar is EN 1.0503 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 21
16
Fatigue Strength, MPa 180
210
Impact Strength: V-Notched Charpy, J 31
16
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
72
Shear Strength, MPa 300
380
Tensile Strength: Ultimate (UTS), MPa 470
630
Tensile Strength: Yield (Proof), MPa 250
310

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
48
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
2.1
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 47
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 85
83
Resilience: Unit (Modulus of Resilience), kJ/m3 170
260
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17
22
Strength to Weight: Bending, points 17
21
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 15
20

Alloy Composition

Carbon (C), % 0 to 0.25
0.42 to 0.5
Chromium (Cr), % 0
0 to 0.4
Copper (Cu), % 0 to 0.6
0
Iron (Fe), % 97.4 to 100
97.3 to 99.08
Manganese (Mn), % 0 to 1.6
0.5 to 0.8
Molybdenum (Mo), % 0
0 to 0.1
Nickel (Ni), % 0
0 to 0.4
Nitrogen (N), % 0 to 0.014
0
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0
0 to 0.4
Sulfur (S), % 0 to 0.045
0 to 0.045