What material is Hastelloy C276?
Hastelloy C276 is an alloy of copper and tin, belonging to a low melting point and high hardness metal. It has good wear resistance, corrosion resistance, and impact resistance, but is prone to oxidation. Mainly used in the manufacturing of mechanical parts such as bearings, gears, shaft sleeves, and hardware products such as valves.
1. Hastelloy C276 Characteristics:
(1) Density: 8.90g/cm3.
(2) Melting point: 230 ° C to 240 ° C. (begins to soften when heated in air). (Melt when heated to 350 ° F at 500 ° F.). (Melting at 600-700 ° F.) A solution of mercury with a solubility of 0.02% and a solution of 0.2% ammonia or ammonium sulfate. (Dissolved in ammonium hydrobromide solution).
(3) Boiling point: 1100~1130 ° C (decomposition), 1450~1500 ° C (decomposition); 1600~1750 ° C (sublimation). The sublimation temperature is 1660 ± 10 ° C; The thermal conductivity is 2.25W/(m · K), the specific heat is 4.24J/(kg · K), and the electrical resistivity is 1.33 × 10-8 Ω· m; Elastic modulus 378Gpa; Poisson's ratio 3.35 × 10-3; Thermal conductivity 0.055W/(m · K); Electronegativity 1.52; The dielectric constant is 2.52, and the polarization strength is 7.95Ev/cm2.
(4) Hardness: 590HV.
(5) Conductivity: The tangent value is greater than 0.
2. Purpose:
Used for producing various precision instrument accessories and chemical equipment components, such as watch casing liners, valve cores, valve stems, pump cover gaskets, etc. It is also used for making spring steel bars and various tool steel strips.
3. Chemical composition:
-Nickel (Ni): Balance
-Molybdenum (Mo): 15-17%
-Chromium (Cr): 14.5-16.5%
-Iron (Fe): 4-7%
-Tungsten (W): 3-4.5%
-Manganese (Mn): 1%
-Cobalt (Co): 2.5%
-Copper (Cu): 0.5%
-Silicon (Si): 0.08%
-Phosphorus (P): 0.04%
-Sulfur (S): 0.03%
-Carbon (C): 0.01%
4. Physical performance:
Specific gravity 8.75-8.5g/cm3, melting point 230-240 ° C, boiling point 1100-1400 degrees, (transition occurs between 1000-1300 degrees), relative density 7.86g/ml, linear expansion coefficient 15.4 × 10-7/k-1, thermal conductivity 0.226W/m.k, thermal expansion coefficient 16.3x 10-6/K-1, elastic modulus 381MPa.
