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ACI-ASTM CK35MN Steel vs. ASTM B780 Alloy

ACI-ASTM CK35MN steel belongs to the iron alloys classification, while ASTM B780 alloy belongs to the otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CK35MN steel and the bottom bar is ASTM B780 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
83
Elongation at Break, % 40
1.1 to 9.1
Poisson's Ratio 0.28
0.36
Shear Modulus, GPa 81
30
Tensile Strength: Ultimate (UTS), MPa 650
330 to 590

Thermal Properties

Latent Heat of Fusion, J/g 310
140
Specific Heat Capacity, J/kg-K 470
270
Thermal Expansion, µm/m-K 16
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
70 to 76
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
62 to 68

Otherwise Unclassified Properties

Density, g/cm3 8.0
10

Common Calculations

Stiffness to Weight: Axial, points 14
4.5
Stiffness to Weight: Bending, points 25
14
Strength to Weight: Axial, points 22
9.1 to 16
Strength to Weight: Bending, points 21
11 to 15
Thermal Shock Resistance, points 14
16 to 29

Alloy Composition

Cadmium (Cd), % 0
0 to 0.050
Carbon (C), % 0 to 0.035
0
Chromium (Cr), % 22 to 24
0
Copper (Cu), % 0 to 0.4
23.5 to 25.7
Iron (Fe), % 43.4 to 51.8
0 to 0.050
Lead (Pb), % 0
0 to 0.030
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 6.0 to 6.8
0
Nickel (Ni), % 20 to 22
0.35 to 0.65
Nitrogen (N), % 0.21 to 0.32
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
0
Silver (Ag), % 0
74 to 76
Sulfur (S), % 0 to 0.020
0
Zinc (Zn), % 0
0 to 0.060