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ACI-ASTM CD4MCu Steel vs. ASTM A369 Grade FPA

Both ACI-ASTM CD4MCu steel and ASTM A369 grade FPA are iron alloys. They have 64% of their average alloy composition in common. There are 29 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 CD4MCu steel and the bottom bar is ASTM A369 grade FPA.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 18
27
Fatigue Strength, MPa 340
180
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 770
380
Tensile Strength: Yield (Proof), MPa 550
240

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 17
52
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 18
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.5
1.4
Embodied Energy, MJ/kg 49
18
Embodied Water, L/kg 180
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
89
Resilience: Unit (Modulus of Resilience), kJ/m3 760
150
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 28
13
Strength to Weight: Bending, points 24
15
Thermal Diffusivity, mm2/s 4.5
14
Thermal Shock Resistance, points 21
12

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.25
Chromium (Cr), % 24.5 to 26.5
0
Copper (Cu), % 2.8 to 3.3
0
Iron (Fe), % 59.9 to 66.3
98.3 to 99.63
Manganese (Mn), % 0 to 1.0
0.27 to 0.93
Molybdenum (Mo), % 1.8 to 2.3
0
Nickel (Ni), % 4.8 to 6.0
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0.1 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.035