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ACI-ASTM CF3MN Steel vs. AWS ER90S-B3

Both ACI-ASTM CF3MN steel and AWS ER90S-B3 are iron alloys. They have 70% 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 CF3MN steel and the bottom bar is AWS ER90S-B3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 39
19
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 580
690
Tensile Strength: Yield (Proof), MPa 290
620

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
40
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 19
4.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.9
1.8
Embodied Energy, MJ/kg 53
24
Embodied Water, L/kg 160
60

Common Calculations

PREN (Pitting Resistance) 30
6.0
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
130
Resilience: Unit (Modulus of Resilience), kJ/m3 210
1000
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 20
25
Strength to Weight: Bending, points 20
22
Thermal Diffusivity, mm2/s 4.1
11
Thermal Shock Resistance, points 13
20

Alloy Composition


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Carbon (C), % 0 to 0.030
0.070 to 0.12
Chromium (Cr), % 17 to 22
2.3 to 2.7
Copper (Cu), % 0
0 to 0.35
Iron (Fe), % 58.7 to 71.9
93.5 to 95.9
Manganese (Mn), % 0 to 1.5
0.4 to 0.7
Molybdenum (Mo), % 2.0 to 3.0
0.9 to 1.2
Nickel (Ni), % 9.0 to 13
0 to 0.2
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.5
0.4 to 0.7
Sulfur (S), % 0 to 0.040
0 to 0.025
Residuals, % 0
0 to 0.5