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EN 1.7779 Steel vs. EN 1.5526 Steel

Both EN 1.7779 steel and EN 1.5526 steel are iron alloys. They have a very high 96% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EN 1.7779 steel and the bottom bar is EN 1.5526 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
150 to 170
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 810
490 to 1650

Thermal Properties

Latent Heat of Fusion, J/g 260
250
Maximum Temperature: Mechanical, °C 470
400
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 39
48
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 4.0
1.9
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.8
1.4
Embodied Energy, MJ/kg 41
19
Embodied Water, L/kg 64
47

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 29
17 to 59
Strength to Weight: Bending, points 25
18 to 40
Thermal Diffusivity, mm2/s 11
13
Thermal Shock Resistance, points 23
14 to 49

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Boron (B), % 0
0.00080 to 0.0050
Carbon (C), % 0.17 to 0.23
0.27 to 0.32
Chromium (Cr), % 3.0 to 3.3
0 to 0.3
Copper (Cu), % 0 to 0.3
0 to 0.25
Iron (Fe), % 93.8 to 95.4
97.7 to 98.9
Manganese (Mn), % 0.3 to 0.5
0.8 to 1.1
Molybdenum (Mo), % 0.5 to 0.6
0
Nickel (Ni), % 0 to 0.3
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 0.010
0 to 0.025
Vanadium (V), % 0.45 to 0.55
0