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ACI-ASTM CB7Cu-2 Steel vs. AISI 416 Stainless Steel

Both ACI-ASTM CB7Cu-2 steel and AISI 416 stainless steel are iron alloys. They have a moderately high 90% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 416 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300 to 420
230 to 320
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 5.7 to 11
13 to 31
Fatigue Strength, MPa 420 to 590
230 to 340
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
76
Tensile Strength: Ultimate (UTS), MPa 960 to 1350
510 to 800
Tensile Strength: Yield (Proof), MPa 760 to 1180
290 to 600

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Melting Completion (Liquidus), °C 1430
1530
Melting Onset (Solidus), °C 1380
1480
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
30
Thermal Expansion, µm/m-K 11
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
7.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.6
1.9
Embodied Energy, MJ/kg 38
27
Embodied Water, L/kg 130
100

Common Calculations

PREN (Pitting Resistance) 15
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 71 to 120
98 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 1510 to 3600
220 to 940
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 34 to 48
18 to 29
Strength to Weight: Bending, points 28 to 35
18 to 25
Thermal Diffusivity, mm2/s 4.6
8.1
Thermal Shock Resistance, points 32 to 45
19 to 30

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.15
Chromium (Cr), % 14 to 15.5
12 to 14
Copper (Cu), % 2.5 to 3.2
0
Iron (Fe), % 73.6 to 79
83.2 to 87.9
Manganese (Mn), % 0 to 0.7
0 to 1.3
Nickel (Ni), % 4.5 to 5.5
0
Niobium (Nb), % 0 to 0.35
0
Nitrogen (N), % 0 to 0.050
0
Phosphorus (P), % 0 to 0.035
0 to 0.060
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0.15 to 0.35