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AWS E309LMo vs. ACI-ASTM CT15C Steel

Both AWS E309LMo and ACI-ASTM CT15C steel are iron alloys. They have 79% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AWS E309LMo and the bottom bar is ACI-ASTM CT15C steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
23
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
76
Tensile Strength: Ultimate (UTS), MPa 580
500

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Melting Completion (Liquidus), °C 1430
1410
Melting Onset (Solidus), °C 1390
1360
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 14
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 22
36
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 4.2
6.1
Embodied Energy, MJ/kg 59
88
Embodied Water, L/kg 180
190

Common Calculations

PREN (Pitting Resistance) 32
20
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
17
Strength to Weight: Bending, points 20
17
Thermal Diffusivity, mm2/s 3.9
3.2
Thermal Shock Resistance, points 15
12

Alloy Composition

Carbon (C), % 0 to 0.040
0.050 to 0.15
Chromium (Cr), % 22 to 25
19 to 21
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 53.6 to 63.5
40.3 to 49.2
Manganese (Mn), % 0.5 to 2.5
0.15 to 1.5
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 12 to 14
31 to 34
Niobium (Nb), % 0
0.5 to 1.5
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0.15 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.030