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EN 1.3551 Steel vs. EN 1.7272 Steel

Both EN 1.3551 steel and EN 1.7272 steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 24 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 1.3551 steel and the bottom bar is EN 1.7272 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 75
73
Tensile Strength: Ultimate (UTS), MPa 720
490 to 1650

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 530
410
Melting Completion (Liquidus), °C 1490
1460
Melting Onset (Solidus), °C 1450
1420
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 36
45
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.6
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 9.9
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
2.2
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.9
1.5
Embodied Energy, MJ/kg 71
19
Embodied Water, L/kg 82
49

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
17 to 59
Strength to Weight: Bending, points 23
18 to 40
Thermal Diffusivity, mm2/s 9.8
12
Thermal Shock Resistance, points 21
14 to 48

Alloy Composition

Boron (B), % 0
0.00080 to 0.0050
Carbon (C), % 0.77 to 0.85
0.28 to 0.33
Chromium (Cr), % 3.9 to 4.3
0.4 to 0.55
Copper (Cu), % 0 to 0.3
0 to 0.25
Iron (Fe), % 88.8 to 91.1
97.2 to 98.3
Manganese (Mn), % 0.15 to 0.35
0.9 to 1.2
Molybdenum (Mo), % 4.0 to 4.5
0.1 to 0.15
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.3
Sulfur (S), % 0 to 0.015
0 to 0.025
Tungsten (W), % 0 to 0.25
0
Vanadium (V), % 0.9 to 1.1
0