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R30556 Alloy vs. ACI-ASTM CB7Cu-2 Steel

Both R30556 alloy and ACI-ASTM CB7Cu-2 steel are iron alloys. They have 50% 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 R30556 alloy and the bottom bar is ACI-ASTM CB7Cu-2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 45
5.7 to 11
Fatigue Strength, MPa 320
420 to 590
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 81
75
Tensile Strength: Ultimate (UTS), MPa 780
960 to 1350
Tensile Strength: Yield (Proof), MPa 350
760 to 1180

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Melting Completion (Liquidus), °C 1420
1430
Melting Onset (Solidus), °C 1330
1380
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 11
17
Thermal Expansion, µm/m-K 15
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 70
13
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.7
2.6
Embodied Energy, MJ/kg 130
38
Embodied Water, L/kg 300
130

Common Calculations

PREN (Pitting Resistance) 40
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
71 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 290
1510 to 3600
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26
34 to 48
Strength to Weight: Bending, points 22
28 to 35
Thermal Diffusivity, mm2/s 2.9
4.6
Thermal Shock Resistance, points 18
32 to 45

Alloy Composition

Aluminum (Al), % 0.1 to 0.5
0
Boron (B), % 0 to 0.020
0
Carbon (C), % 0.050 to 0.15
0 to 0.070
Chromium (Cr), % 21 to 23
14 to 15.5
Cobalt (Co), % 16 to 21
0
Copper (Cu), % 0
2.5 to 3.2
Iron (Fe), % 20.4 to 38.2
73.6 to 79
Lanthanum (La), % 0.0050 to 0.1
0
Manganese (Mn), % 0.5 to 2.0
0 to 0.7
Molybdenum (Mo), % 2.5 to 4.0
0
Nickel (Ni), % 19 to 22.5
4.5 to 5.5
Niobium (Nb), % 0 to 0.3
0 to 0.35
Nitrogen (N), % 0.1 to 0.3
0 to 0.050
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0.2 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Tantalum (Ta), % 0.3 to 1.3
0
Tungsten (W), % 2.0 to 3.5
0
Zinc (Zn), % 0.0010 to 0.1
0