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ASTM B780 Alloy vs. EN 1.4971 Stainless Steel

ASTM B780 alloy belongs to the otherwise unclassified metals classification, while EN 1.4971 stainless steel belongs to the iron alloys. There are 15 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.

For each property being compared, the top bar is ASTM B780 alloy and the bottom bar is EN 1.4971 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
210
Elongation at Break, % 1.1 to 9.1
34
Poisson's Ratio 0.36
0.29
Shear Modulus, GPa 30
81
Shear Strength, MPa 200 to 340
530
Tensile Strength: Ultimate (UTS), MPa 330 to 590
800

Thermal Properties

Latent Heat of Fusion, J/g 140
300
Specific Heat Capacity, J/kg-K 270
450
Thermal Expansion, µm/m-K 18
15

Otherwise Unclassified Properties

Density, g/cm3 10
8.4

Common Calculations

Stiffness to Weight: Axial, points 4.5
14
Stiffness to Weight: Bending, points 14
24
Strength to Weight: Axial, points 9.1 to 16
26
Strength to Weight: Bending, points 11 to 15
23
Thermal Shock Resistance, points 16 to 29
19

Alloy Composition

Cadmium (Cd), % 0 to 0.050
0
Carbon (C), % 0
0.080 to 0.16
Chromium (Cr), % 0
20 to 22.5
Cobalt (Co), % 0
18.5 to 21
Copper (Cu), % 23.5 to 25.7
0
Iron (Fe), % 0 to 0.050
24.3 to 37.1
Lead (Pb), % 0 to 0.030
0
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0.35 to 0.65
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Nitrogen (N), % 0
0.1 to 0.2
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0 to 1.0
Silver (Ag), % 74 to 76
0
Sulfur (S), % 0
0 to 0.015
Tungsten (W), % 0
2.0 to 3.0
Zinc (Zn), % 0 to 0.060
0