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ASTM B780 Alloy vs. ASTM Grade HN Steel

ASTM B780 alloy belongs to the otherwise unclassified metals classification, while ASTM grade HN steel belongs to the iron alloys. There are 14 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is ASTM B780 alloy and the bottom bar is ASTM grade HN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
200
Elongation at Break, % 1.1 to 9.1
9.0
Poisson's Ratio 0.36
0.28
Shear Modulus, GPa 30
77
Tensile Strength: Ultimate (UTS), MPa 330 to 590
500

Thermal Properties

Latent Heat of Fusion, J/g 140
310
Specific Heat Capacity, J/kg-K 270
480
Thermal Expansion, µm/m-K 18
16

Otherwise Unclassified Properties

Density, g/cm3 10
7.9

Common Calculations

Stiffness to Weight: Axial, points 4.5
14
Stiffness to Weight: Bending, points 14
25
Strength to Weight: Axial, points 9.1 to 16
17
Strength to Weight: Bending, points 11 to 15
18
Thermal Shock Resistance, points 16 to 29
11

Alloy Composition

Cadmium (Cd), % 0 to 0.050
0
Carbon (C), % 0
0.2 to 0.5
Chromium (Cr), % 0
19 to 23
Copper (Cu), % 23.5 to 25.7
0
Iron (Fe), % 0 to 0.050
44.9 to 57.8
Lead (Pb), % 0 to 0.030
0
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0.35 to 0.65
23 to 27
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 2.0
Silver (Ag), % 74 to 76
0
Sulfur (S), % 0
0 to 0.040
Zinc (Zn), % 0 to 0.060
0