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AWS E308LMo vs. ACI-ASTM CA6NM Steel

Both AWS E308LMo and ACI-ASTM CA6NM steel are iron alloys. They have 84% 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 AWS E308LMo and the bottom bar is ACI-ASTM CA6NM steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
17
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
76
Tensile Strength: Ultimate (UTS), MPa 580
850

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 16
25
Thermal Expansion, µm/m-K 14
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 19
10
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.8
2.5
Embodied Energy, MJ/kg 53
34
Embodied Water, L/kg 160
110

Common Calculations

PREN (Pitting Resistance) 28
15
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 21
30
Strength to Weight: Bending, points 20
26
Thermal Diffusivity, mm2/s 4.2
6.7
Thermal Shock Resistance, points 15
31

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.060
Chromium (Cr), % 18 to 21
11.5 to 14
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 59.6 to 70.5
78.4 to 84.6
Manganese (Mn), % 0.5 to 2.5
0 to 1.0
Molybdenum (Mo), % 2.0 to 3.0
0.4 to 1.0
Nickel (Ni), % 9.0 to 12
3.5 to 4.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030