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EN 1.7779 Steel vs. AWS E309LMo

Both EN 1.7779 steel and AWS E309LMo are iron alloys. They have 63% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.7779 steel and the bottom bar is AWS E309LMo.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 16
34
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
79
Tensile Strength: Ultimate (UTS), MPa 810
580

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 39
15
Thermal Expansion, µm/m-K 13
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.7
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 4.0
22
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.8
4.2
Embodied Energy, MJ/kg 41
59
Embodied Water, L/kg 64
180

Common Calculations

PREN (Pitting Resistance) 5.0
32
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 29
21
Strength to Weight: Bending, points 25
20
Thermal Diffusivity, mm2/s 11
3.9
Thermal Shock Resistance, points 23
15

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Carbon (C), % 0.17 to 0.23
0 to 0.040
Chromium (Cr), % 3.0 to 3.3
22 to 25
Copper (Cu), % 0 to 0.3
0 to 0.75
Iron (Fe), % 93.8 to 95.4
53.6 to 63.5
Manganese (Mn), % 0.3 to 0.5
0.5 to 2.5
Molybdenum (Mo), % 0.5 to 0.6
2.0 to 3.0
Nickel (Ni), % 0 to 0.3
12 to 14
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030
Vanadium (V), % 0.45 to 0.55
0