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ACI-ASTM CB7Cu-2 Steel vs. EN 1.4123 Stainless Steel

Both ACI-ASTM CB7Cu-2 steel and EN 1.4123 stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CB7Cu-2 steel and the bottom bar is EN 1.4123 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300 to 420
220 to 250
Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Tensile Strength: Ultimate (UTS), MPa 960 to 1350
720 to 810

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1380
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
23
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 13
10
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.6
4.2
Embodied Energy, MJ/kg 38
62
Embodied Water, L/kg 130
120

Common Calculations

PREN (Pitting Resistance) 15
24
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 34 to 48
26 to 29
Strength to Weight: Bending, points 28 to 35
23 to 25
Thermal Diffusivity, mm2/s 4.6
6.3
Thermal Shock Resistance, points 32 to 45
26 to 29

Alloy Composition

Carbon (C), % 0 to 0.070
0.35 to 0.5
Chromium (Cr), % 14 to 15.5
14 to 16.5
Copper (Cu), % 2.5 to 3.2
0
Iron (Fe), % 73.6 to 79
76.7 to 84.6
Manganese (Mn), % 0 to 0.7
0 to 1.0
Molybdenum (Mo), % 0
1.0 to 2.5
Nickel (Ni), % 4.5 to 5.5
0 to 0.5
Niobium (Nb), % 0 to 0.35
0
Nitrogen (N), % 0 to 0.050
0.1 to 0.3
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0 to 1.5