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ACI-ASTM CD3MCuN Steel vs. ASTM A369 Grade FP9

Both ACI-ASTM CD3MCuN steel and ASTM A369 grade FP9 are iron alloys. They have 73% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CD3MCuN steel and the bottom bar is ASTM A369 grade FP9.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 29
20
Fatigue Strength, MPa 370
160
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
75
Tensile Strength: Ultimate (UTS), MPa 790
470
Tensile Strength: Yield (Proof), MPa 500
240

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Maximum Temperature: Mechanical, °C 1100
600
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
26
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
10

Otherwise Unclassified Properties

Base Metal Price, % relative 20
6.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.9
2.0
Embodied Energy, MJ/kg 54
28
Embodied Water, L/kg 180
87

Common Calculations

PREN (Pitting Resistance) 41
12
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
80
Resilience: Unit (Modulus of Resilience), kJ/m3 620
140
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
17
Strength to Weight: Bending, points 24
17
Thermal Diffusivity, mm2/s 4.1
6.9
Thermal Shock Resistance, points 22
13

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.15
Chromium (Cr), % 24 to 26.7
8.0 to 10
Copper (Cu), % 1.4 to 1.9
0
Iron (Fe), % 58.2 to 65.9
87.1 to 90.3
Manganese (Mn), % 0 to 1.2
0.3 to 0.6
Molybdenum (Mo), % 2.9 to 3.8
0.9 to 1.1
Nickel (Ni), % 5.6 to 6.7
0
Nitrogen (N), % 0.22 to 0.33
0
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 1.1
0.5 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030