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EN 1.3505 Steel vs. EN 1.7139 Steel

Both EN 1.3505 steel and EN 1.7139 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.3505 steel and the bottom bar is EN 1.7139 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 210
150 to 180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
73
Tensile Strength: Ultimate (UTS), MPa 600 to 690
480 to 1390

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 430
420
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 45
44
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
2.2
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
1.4
Embodied Energy, MJ/kg 20
19
Embodied Water, L/kg 52
51

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22 to 25
17 to 49
Strength to Weight: Bending, points 20 to 22
17 to 35
Thermal Diffusivity, mm2/s 12
12
Thermal Shock Resistance, points 18 to 20
14 to 41

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Carbon (C), % 0.93 to 1.1
0.14 to 0.19
Chromium (Cr), % 1.4 to 1.6
0.8 to 1.1
Copper (Cu), % 0 to 0.3
0 to 0.25
Iron (Fe), % 97.1 to 98.3
96.8 to 98
Manganese (Mn), % 0.25 to 0.45
1.0 to 1.3
Molybdenum (Mo), % 0 to 0.1
0
Oxygen (O), % 0 to 0.0015
0
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0.15 to 0.35
0 to 0.3
Sulfur (S), % 0 to 0.030
0.020 to 0.040

Comparable Variants