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AWS E318 vs. ACI-ASTM CB7Cu-1 Steel

Both AWS E318 and ACI-ASTM CB7Cu-1 steel are iron alloys. They have 86% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is AWS E318 and the bottom bar is ACI-ASTM CB7Cu-1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 29
5.7 to 11
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
76
Tensile Strength: Ultimate (UTS), MPa 620
960 to 1350

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Melting Completion (Liquidus), °C 1440
1430
Melting Onset (Solidus), °C 1400
1500
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 15
17
Thermal Expansion, µm/m-K 14
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 23
13
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.4
2.6
Embodied Energy, MJ/kg 62
38
Embodied Water, L/kg 160
130

Common Calculations

PREN (Pitting Resistance) 27
17
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
34 to 48
Strength to Weight: Bending, points 20
28 to 35
Thermal Diffusivity, mm2/s 4.0
4.6
Thermal Shock Resistance, points 16
32 to 45

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.070
Chromium (Cr), % 17 to 20
15.5 to 17.7
Copper (Cu), % 0 to 0.75
2.5 to 3.2
Iron (Fe), % 57.6 to 69.5
72.3 to 78.4
Manganese (Mn), % 0.5 to 2.5
0 to 0.7
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 11 to 14
3.6 to 4.6
Niobium (Nb), % 0 to 1.0
0 to 0.35
Nitrogen (N), % 0
0 to 0.050
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030