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EN 1.7239 Steel vs. EN 1.1233 Steel

Both EN 1.7239 steel and EN 1.1233 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.7239 steel and the bottom bar is EN 1.1233 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 480
200 to 220
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
72
Tensile Strength: Ultimate (UTS), MPa 660 to 1990
680 to 760

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
400
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 44
51
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
1.9
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 50
47

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23 to 71
24 to 27
Strength to Weight: Bending, points 21 to 45
22 to 24
Thermal Diffusivity, mm2/s 12
14
Thermal Shock Resistance, points 19 to 59
22 to 24

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Carbon (C), % 0.56 to 0.64
0.52 to 0.6
Chromium (Cr), % 0.7 to 1.0
0
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 96.8 to 98
98 to 99.1
Manganese (Mn), % 0.7 to 1.0
0.9 to 1.2
Molybdenum (Mo), % 0.060 to 0.15
0
Oxygen (O), % 0
0 to 0.0020
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.4
Sulfur (S), % 0 to 0.025
0 to 0.030

Comparable Variants