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ASTM A182 Grade F12 Class 1 vs. ACI-ASTM CD4MCu Steel

Both ASTM A182 grade F12 class 1 and ACI-ASTM CD4MCu steel are iron alloys. They have 65% of their average alloy composition in common. There are 30 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 ASTM A182 grade F12 class 1 and the bottom bar is ACI-ASTM CD4MCu steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 23
18
Fatigue Strength, MPa 180
340
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
79
Tensile Strength: Ultimate (UTS), MPa 470
770
Tensile Strength: Yield (Proof), MPa 250
550

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 430
1100
Melting Completion (Liquidus), °C 1470
1430
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 45
17
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
18
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.6
3.5
Embodied Energy, MJ/kg 21
49
Embodied Water, L/kg 52
180

Common Calculations

PREN (Pitting Resistance) 2.8
32
Resilience: Ultimate (Unit Rupture Work), MJ/m3 91
130
Resilience: Unit (Modulus of Resilience), kJ/m3 160
760
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17
28
Strength to Weight: Bending, points 17
24
Thermal Diffusivity, mm2/s 12
4.5
Thermal Shock Resistance, points 14
21

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.040
Chromium (Cr), % 0.8 to 1.3
24.5 to 26.5
Copper (Cu), % 0
2.8 to 3.3
Iron (Fe), % 96.8 to 98.4
59.9 to 66.3
Manganese (Mn), % 0.3 to 0.6
0 to 1.0
Molybdenum (Mo), % 0.44 to 0.65
1.8 to 2.3
Nickel (Ni), % 0
4.8 to 6.0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.045
0 to 0.040