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ACI-ASTM CB7Cu-2 Steel vs. AISI 314 Stainless Steel

Both ACI-ASTM CB7Cu-2 steel and AISI 314 stainless steel are iron alloys. They have 72% 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-2 steel and the bottom bar is AISI 314 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300 to 420
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 5.7 to 11
45
Fatigue Strength, MPa 420 to 590
210
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
78
Tensile Strength: Ultimate (UTS), MPa 960 to 1350
590
Tensile Strength: Yield (Proof), MPa 760 to 1180
230

Thermal Properties

Latent Heat of Fusion, J/g 280
330
Melting Completion (Liquidus), °C 1430
1380
Melting Onset (Solidus), °C 1380
1340
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 17
15
Thermal Expansion, µm/m-K 11
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
25
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.6
4.3
Embodied Energy, MJ/kg 38
62
Embodied Water, L/kg 130
190

Common Calculations

PREN (Pitting Resistance) 15
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 120
210
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
21
Strength to Weight: Bending, points 28 to 35
20
Thermal Diffusivity, mm2/s 4.6
3.9
Thermal Shock Resistance, points 32 to 45
14

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.25
Chromium (Cr), % 14 to 15.5
23 to 26
Copper (Cu), % 2.5 to 3.2
0
Iron (Fe), % 73.6 to 79
46.7 to 56.5
Manganese (Mn), % 0 to 0.7
0 to 2.0
Nickel (Ni), % 4.5 to 5.5
19 to 22
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
1.5 to 3.0
Sulfur (S), % 0 to 0.030
0 to 0.030