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AWS E309LMo vs. Grade VDSiCr Steel

Both AWS E309LMo and grade VDSiCr steel are iron alloys. They have 60% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
80
Tensile Strength: Ultimate (UTS), MPa 580
1950

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
46
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 22
2.2
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 4.2
1.5
Embodied Energy, MJ/kg 59
20
Embodied Water, L/kg 180
48

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
70
Strength to Weight: Bending, points 20
45
Thermal Diffusivity, mm2/s 3.9
12
Thermal Shock Resistance, points 15
58

Alloy Composition

Carbon (C), % 0 to 0.040
0.5 to 0.6
Chromium (Cr), % 22 to 25
0.5 to 0.8
Copper (Cu), % 0 to 0.75
0 to 0.060
Iron (Fe), % 53.6 to 63.5
96.6 to 97.8
Manganese (Mn), % 0.5 to 2.5
0.5 to 0.9
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 12 to 14
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
1.2 to 1.6
Sulfur (S), % 0 to 0.030
0 to 0.020