【China Aluminum Network】C95600 Alloy

C95600 alloy is commonly referred to as aluminum silicon bronze and is used for cast cable connections, terminals, valve stems, gears, worms, and overhead circuit components, in addition to sand casting ship structural parts.

chemical composition

The chemical composition (% by mass) of the C95600 alloy is relatively simple: Cu ≥ 88.0, (Ni + Co) 0.25, Al 6.0 - 8.0, Si 1.8 - 3.3, Cu + above sum of elements ≥ 99.0.

Mechanical properties

Typical tensile properties of single-cast sand casting rods: tensile strength Rm=515 N/mm2, yield strength Rp0.5=235 N/mm2, elongation A50=18%, sample state M01.

Brinell hardness 140HB (load 3000kg), positive elastic modulus E = 105GN/m2.

Physical properties

The density of C95600 alloy at 20°C is 7.69g/cm3, and the volume change rate when solidified is 16mm/m; thermal properties: liquidus temperature is 1005°C, solidus temperature is 982°C, and the specific heat capacity at 20°C is 376J/(kg·k); Electrical properties: Volume conductivity 8.5% IACS at 20°C.

Process performance

The M01 state C95600 alloy has good machinability, which is 80% of the free-cutting alloy C36000 brass. Casting stress relief annealing temperature 260 °C.

C95700 alloy

The C95700 alloy is a manganese aluminum bronze, referred to as 73-3-8-2-12 bronze, under the trade names Superstone 40, Novoston, and Ampcoloy 495. Sand casting ship propellers and various spare parts as well as impellers, stator clamps, safety tools, welding rods, valves, pump casings and so on. However, it should be noted that this alloy is not suitable for use in oxidizing acidic media because slow cooling at 350°C to 565°C or prolonged heating may be brittle.

chemical composition

Chemical composition of the C95700 alloy (% by mass): Cu ≥ 71.0, Mn11.0 - 14.0, Al7.0 - 8.5, Fe2.0 - 4.0, Ni1.5 - 3.0, Si0.10, P0.03, The sum of other impurities is 0.5. The impurity content should be strictly controlled, too much may cause brittleness and reduce strength.

Mechanical properties

Typical mechanical properties of single-cast sand casting rods: tensile strength Rm = 620 N/mm2, yield strength Rp0.2 = 275 N/mm2, elongation A50 = 20%, shrinkage 24%; compressive strength of as-cast materials ( Longer deformation 0.1%) 1035N/mm2; Casting or annealed casting hardness 85HRB - 90HRB; Positive elastic modulus E = 125GN/m2, Shear modulus 44GN/m2, Poisson's ratio 0.326; Cantilever ratio at 20 °C Toughness of impact test 27J; Repeated bending of 108 cycles Fatigue strength 231 N/mm2; Creep strength at 10-5%: 66 N/mm2 at 205°C, 31 N/mm2 at 290°C; 105h at use, 205°C The creep rupture stress is 470 N/mm2, 232 N/mm2 at 260°C, and 39 N/mm2 at 370°C.

Microstructure

The microstructure of the cast and annealed material is about 25% by volume of the face-centered cubic structure of the alpha phase and a small amount of the close-packed hexagonal lattice of the beta-phase.

Physical-chemical properties

The density of the C95700 alloy (20°C) is 7.53 g/cm3. Solidification shrinkage 1.6%; Thermal properties: liquidus temperature 990 °C, solidus temperature 950 °C, 20 °C -300 °C average linear expansion coefficient 17.6μm (m · k), 20 °C specific heat capacity 440J, 20 °C Thermal conductivity 12.1 W/(m·k); resistivity at 556 nΩ·m at 20°C, volumetric conductivity 3.1%IACS; permeability of as cast slow-cooling castings 2.2—15.0 Permeability of annealed quick-cooling castings 1.03. The corrosion resistance of the C95700 alloy is similar to that of aluminum bronze and nickel aluminum bronze.

Process performance

The cutting performance of the C95700 alloy is 50% of that of the C36000 alloy. The typical parameters for cutting with a tool steel tool are: a roughing speed of 75 m/min at a feeding speed of 0.3 mm/rev, and a finishing speed of 290 m/min at a feeding speed of 0.1 mm/min. The annealing temperature is 620°C.

Zinc Coating

Zinc coating is a type of protective coating that is commonly used on metal surfaces to extend their durability and prevent them from corroding or rusting. It involves the application of a thin layer of zinc onto the surface of metal parts through a number of processes, the most common of which is hot-dip galvanizing.

The benefits of zinc coating are many. It offers excellent corrosion resistance, making it ideal for outdoor applications where metal parts are exposed to harsh weather conditions. Zinc coating also provides a smooth and uniform finish, which enhances the appearance of the metal and makes it more visually appealing. In addition to this, zinc coating improves the overall performance of the metal part by increasing its resistance to wear and tear.

Zinc coating is used in a variety of industries and applications, including construction, automotive, and manufacturing. In the construction industry, it is used to protect steel structures such as bridges, buildings, and pipelines from corrosion. In the automotive industry, it is used to protect metal components such as car frames, exhaust systems, and suspension parts. In the manufacturing industry, it can be used to protect machinery and equipment parts from rust and corrosion.

In conclusion, zinc coating is a highly effective and versatile technology for protecting metal parts from corrosion and rust. Whether for outdoor or indoor applications, it offers numerous benefits in terms of performance and durability. As such, it is an essential process for enhancing the longevity and reliability of metal parts across a range of industries and applications.

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