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EN 1.7366 Steel vs. EN 1.7231 Steel

Both EN 1.7366 steel and EN 1.7231 steel are iron alloys. They have a very high 96% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.7366 steel and the bottom bar is EN 1.7231 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 210
240 to 280
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17 to 19
11 to 12
Fatigue Strength, MPa 160 to 320
360 to 500
Impact Strength: V-Notched Charpy, J 38
28 to 30
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
73
Tensile Strength: Ultimate (UTS), MPa 460 to 710
790 to 930
Tensile Strength: Yield (Proof), MPa 230 to 480
570 to 800

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 510
420
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 40
46
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.1
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 9.3
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 4.3
2.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.7
1.5
Embodied Energy, MJ/kg 23
20
Embodied Water, L/kg 69
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 74 to 110
87 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 600
870 to 1700
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 16 to 25
28 to 33
Strength to Weight: Bending, points 17 to 23
24 to 27
Thermal Diffusivity, mm2/s 11
12
Thermal Shock Resistance, points 13 to 20
23 to 27

Alloy Composition

Carbon (C), % 0 to 0.18
0.38 to 0.45
Chromium (Cr), % 4.0 to 6.0
0.8 to 1.2
Iron (Fe), % 91.9 to 95.3
96.4 to 98.1
Manganese (Mn), % 0.3 to 0.8
0.6 to 1.0
Molybdenum (Mo), % 0.45 to 0.65
0.15 to 0.3
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.6
Sulfur (S), % 0 to 0.015
0 to 0.030

Comparable Variants