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EN 1.7139 Steel vs. EN 1.6523 Steel

Both EN 1.7139 steel and EN 1.6523 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.7139 steel and the bottom bar is EN 1.6523 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
150 to 190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 480 to 1390
510 to 1460

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
410
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 44
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
2.6
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
1.5
Embodied Energy, MJ/kg 19
20
Embodied Water, L/kg 51
50

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17 to 49
18 to 52
Strength to Weight: Bending, points 17 to 35
18 to 36
Thermal Diffusivity, mm2/s 12
10
Thermal Shock Resistance, points 14 to 41
15 to 43

Alloy Composition

Carbon (C), % 0.14 to 0.19
0.17 to 0.23
Chromium (Cr), % 0.8 to 1.1
0.35 to 0.7
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 96.8 to 98
96.6 to 98.3
Manganese (Mn), % 1.0 to 1.3
0.65 to 1.0
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 0
0.4 to 0.7
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.3
0 to 0.3
Sulfur (S), % 0.020 to 0.040
0 to 0.025

Comparable Variants