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ACI-ASTM CB7Cu-2 Steel vs. EN 1.3955 Stainless Steel

Both ACI-ASTM CB7Cu-2 steel and EN 1.3955 stainless steel are iron alloys. They have a moderately high 90% 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 CB7Cu-2 steel and the bottom bar is EN 1.3955 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 5.7 to 11
23
Fatigue Strength, MPa 420 to 590
150
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Tensile Strength: Ultimate (UTS), MPa 960 to 1350
520
Tensile Strength: Yield (Proof), MPa 760 to 1180
220

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Melting Completion (Liquidus), °C 1430
1430
Melting Onset (Solidus), °C 1380
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
15
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 13
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.6
3.2
Embodied Energy, MJ/kg 38
45
Embodied Water, L/kg 130
140

Common Calculations

PREN (Pitting Resistance) 15
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 120
95
Resilience: Unit (Modulus of Resilience), kJ/m3 1510 to 3600
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 34 to 48
18
Strength to Weight: Bending, points 28 to 35
18
Thermal Diffusivity, mm2/s 4.6
4.1
Thermal Shock Resistance, points 32 to 45
15

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.15
Chromium (Cr), % 14 to 15.5
16.5 to 18.5
Copper (Cu), % 2.5 to 3.2
0
Iron (Fe), % 73.6 to 79
65.5 to 73.5
Manganese (Mn), % 0 to 0.7
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.75
Nickel (Ni), % 4.5 to 5.5
10 to 12
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