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ACI-ASTM CF3 Steel vs. AWS ER90S-B9

Both ACI-ASTM CF3 steel and AWS ER90S-B9 are iron alloys. They have 80% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CF3 steel and the bottom bar is AWS ER90S-B9.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 60
18
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
75
Tensile Strength: Ultimate (UTS), MPa 510
690
Tensile Strength: Yield (Proof), MPa 250
470

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1450
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
25
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 16
7.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.2
2.6
Embodied Energy, MJ/kg 45
37
Embodied Water, L/kg 150
91

Common Calculations

PREN (Pitting Resistance) 20
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
110
Resilience: Unit (Modulus of Resilience), kJ/m3 160
570
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
25
Strength to Weight: Bending, points 18
22
Thermal Diffusivity, mm2/s 4.3
6.9
Thermal Shock Resistance, points 11
19

Alloy Composition

Aluminum (Al), % 0
0 to 0.040
Carbon (C), % 0 to 0.030
0.070 to 0.13
Chromium (Cr), % 17 to 21
8.0 to 10.5
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 62.9 to 75
84.4 to 90.7
Manganese (Mn), % 0 to 1.5
0 to 1.2
Molybdenum (Mo), % 0 to 0.5
0.85 to 1.2
Nickel (Ni), % 8.0 to 12
0 to 0.8
Niobium (Nb), % 0
0.020 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.040
0 to 0.010
Silicon (Si), % 0 to 2.0
0.15 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.010
Vanadium (V), % 0
0.15 to 0.3
Residuals, % 0
0 to 0.5