MakeItFrom.com
Menu (ESC)

SAE-AISI A7 Steel vs. ACI-ASTM CB7Cu-2 Steel

Both SAE-AISI A7 steel and ACI-ASTM CB7Cu-2 steel are iron alloys. They have 83% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A7 steel and the bottom bar is ACI-ASTM CB7Cu-2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
75
Tensile Strength: Ultimate (UTS), MPa 800 to 2150
960 to 1350

Thermal Properties

Latent Heat of Fusion, J/g 260
280
Melting Completion (Liquidus), °C 1470
1430
Melting Onset (Solidus), °C 1430
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 37
17
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 10
13
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 13
2.6
Embodied Energy, MJ/kg 200
38
Embodied Water, L/kg 100
130

Common Calculations

PREN (Pitting Resistance) 11
15
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29 to 77
34 to 48
Strength to Weight: Bending, points 25 to 48
28 to 35
Thermal Diffusivity, mm2/s 10
4.6
Thermal Shock Resistance, points 27 to 72
32 to 45

Alloy Composition

Carbon (C), % 2.0 to 2.9
0 to 0.070
Chromium (Cr), % 5.0 to 5.8
14 to 15.5
Copper (Cu), % 0 to 0.25
2.5 to 3.2
Iron (Fe), % 81.4 to 87.7
73.6 to 79
Manganese (Mn), % 0 to 0.8
0 to 0.7
Molybdenum (Mo), % 0.9 to 1.4
0
Nickel (Ni), % 0 to 0.3
4.5 to 5.5
Niobium (Nb), % 0
0 to 0.35
Nitrogen (N), % 0
0 to 0.050
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0.5 to 1.5
0
Vanadium (V), % 3.9 to 5.2
0