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ACI-ASTM CB7Cu-1 Steel vs. AISI 304Cu Stainless Steel

Both ACI-ASTM CB7Cu-1 steel and AISI 304Cu stainless steel are iron alloys. They have a moderately high 92% 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 ACI-ASTM CB7Cu-1 steel and the bottom bar is AISI 304Cu stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300 to 420
160
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 5.7 to 11
45
Fatigue Strength, MPa 420 to 590
190
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 960 to 1350
530
Tensile Strength: Yield (Proof), MPa 760 to 1180
210

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Melting Completion (Liquidus), °C 1430
1410
Melting Onset (Solidus), °C 1500
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
13
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 13
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.6
3.0
Embodied Energy, MJ/kg 38
43
Embodied Water, L/kg 130
150

Common Calculations

PREN (Pitting Resistance) 17
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 120
190
Resilience: Unit (Modulus of Resilience), kJ/m3 1500 to 3590
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 34 to 48
19
Strength to Weight: Bending, points 28 to 35
19
Thermal Diffusivity, mm2/s 4.6
3.5
Thermal Shock Resistance, points 32 to 45
12

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.030
Chromium (Cr), % 15.5 to 17.7
17 to 19
Copper (Cu), % 2.5 to 3.2
3.0 to 4.0
Iron (Fe), % 72.3 to 78.4
63.9 to 72
Manganese (Mn), % 0 to 0.7
0 to 2.0
Nickel (Ni), % 3.6 to 4.6
8.0 to 10
Niobium (Nb), % 0 to 0.35
0
Nitrogen (N), % 0 to 0.050
0
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030