Characteristics of aluminum alloy fasteners and industry application solutions

Aluminum fastener products are 1/3 the weight of their steel counterparts, and the strength characteristics of this often-used alloy are surprisingly good. Aluminum fasteners have a higher strength-to-mass ratio than fasteners made from any other commercial or industrial material. Aluminum is non-magnetizable. Aluminum's thermal conductivity is excellent, about 2/3 of the conductivity of copper in the same volume. Aluminum has good processing characteristics, easy to cold form, and hot forging. Commonly used fasteners are:

Aluminum Socket Head Screws, Aluminum Decorative Round Head Slotted Screws, Aluminum Ultra-Wide Flanged Button Head Screws, Metric Aluminum Ultra-Wide Flanged Button Head Screws, Aluminum Hex Head Screws, Metric Steel Phillips Rounded

Head Drilling Screws for Metal, Aluminum Hex Head Drilling Screws for Aluminum, Steel Hex Head Thread-Cutting Screws for Metal, Aluminum Low-Profile Binding Barrels and Screws, Aluminum Hex Nuts, Tamper-Resistant Serrated-Edge Locknuts, Aluminum Threaded Rods, Male-Female Threaded Hex Standoffs, Black-Anodized Aluminum Unthreaded Spacers.

一、Aluminum Fasteners and Accessories Surface Treatment

Aluminum has adequate corrosion resistance in everyday environments. And when exposure is expected to be severe, its corrosion resistance can be significantly improved by anodizing. Anodizing is an electrical process that forms an oxide film on the surface of a metal. Anodizing enhances corrosion resistance and increases protection against abrasion and scratches. Anodized coatings are available in many colors for decorative and identification purposes. In atmospheric corrosion, aluminum forms a grayish oxide film on the surface. Unlike many other metals that behave differently under corrosion, these corrosion products do not contaminate the aluminum surface or spread to adjacent surfaces. Various techniques for the decorative oxidation of aluminum and aluminum alloys can generally be divided into chemical oxidation and electrochemical oxidation, i.e., anodic oxidation. Among them, anodic oxidation is widely used. This is because the oxide film obtained by anodic oxidation performs better than all chemical oxidation methods. Aluminum and aluminum alloy products, after chemical or electrochemical polishing and anodic oxidation, can get smooth, bright, transparent oxide film, and dyeing can be obtained after various colorful surfaces. If oxidized under certain process conditions, a layer of imitation glaze film can be formed on its surface so the surface of aluminum products can obtain a special decorative effect.

Chemical oxidation: The chemical oxidation treatment of aluminum and aluminum alloy can be divided into an alkaline solution and an acidic solution according to the nature of the solution.

According to the nature of its film, it Can be divided into oxide film, phosphate film, chromate film, and chromate-phosphate film.

二、Aluminum alloy fastener application industry

Aluminum is a light metal, and its compounds are widely distributed in nature. The aluminum content in the earth's crust is about 8% (by weight), second only to oxygen and silicon, ranking third.

The metal varieties are second only to steel for the second largest category of metals. Aluminum conductivity, flexibility, goods, and a wide range of applications involving light industry, electricity, electrical, electronic, automotive, machinery manufacturing, construction, packaging, and other sectors are essential for developing the national economy.

The main factors affecting the price of aluminum are production and import and export volume, inventory, the high and low cost of electricity, the degree of application of the relevant alternative products, and the improvement and innovation of the production process.

Fasteners are fastened to two or more parts (or components) attached to become a whole piece of a class of mechanical parts used in the general term. It is characterized by a wide variety of specifications, performance, and use of different, and standardization, serialization, and generalization of the degree is also very high, widely used in a variety of machinery, equipment, vehicles, ships, railroads, bridges, buildings, structures, tools, instruments, meters, and other fields.

Fasteners are available in various specifications, with different properties and uses. Currently, fasteners on the market mainly include bolts, studs, screws, nuts, self-tapping screws, wood screws, washers, retaining rings, (pins) pins, rivets, combinations of parts and connecting parts, and welded nails.

Juxin Fasteners is one of the world's largest fasteners manufacturers; its products cover bolts, nuts, screws, fine line, non-standard special fasteners, etc., which are widely used in electrical appliances, automobiles, bridges, high-speed railroads, steel structures, construction machinery, and other fields, and has a high reputation in the industry, the ability to manufacture the products as well as the stability of the sector is at a higher level.

三、Aluminum alloy fastener characteristics 

Aluminum alloy is divided into two categories: cast aluminum alloy, used in the cast state, and deformed aluminum alloy, which can withstand pressure processing and mechanical properties higher than the cast state. It can be processed into various forms and specifications of aluminum alloy material. It mainly manufactures aviation equipment, daily necessities, and doors and windows for construction. Aluminum alloy can be divided into deformed and cast aluminum alloy according to the processing method. Deformed aluminum alloys are divided into non-heat-treatable reinforced aluminum and heat-treatable reinforced aluminum alloys. Heat treatment cannot strengthen non-heat-treatable reinforced aluminum alloys and improve their mechanical properties. They can only be supported by cold working deformation, which mainly includes high-purity aluminum, industrial high-purity aluminum, industrial pure aluminum, and rust-resistant aluminum. Heat-treatable reinforced aluminum alloys can be quenched and aged; other heat treatment means to improve mechanical properties, which can be divided into duralumin, wrought aluminum, super-hard aluminum, and unique aluminum alloys.

Some aluminum alloys can be heat treated to obtain good mechanical properties, physical properties, and corrosion resistance.

Casting aluminum alloy according to the chemical composition can be divided into aluminum-silicon alloy, aluminum-copper alloy, aluminum-magnesium alloy, aluminum-zinc alloy and aluminum-rare earth alloys, of which aluminum-silicon alloy and simple aluminum-silicon alloy (can not be strengthened by heat treatment, mechanical properties of the lower casting performance is good), the special aluminum-silicon alloy (can be heat-treated to improve the mechanical properties of the higher casting performance is good).

1. Small density: Aluminum and aluminum alloys have a density close to 2.7g, about 1/3 of iron or copper.

2. High strength: aluminum and aluminum alloy strength. After a certain degree of cold working, the matrix strength can be strengthened, and heat treatment can also support some aluminum alloy grades.

3. Good electrical and thermal conductivity: aluminum's electrical and thermal conductivity is second only to silver, copper, and gold.

4. Good corrosion resistance: the surface of aluminum quickly naturally produces a layer of dense and solid AL2O3 protective film, which can protect the substrate from corrosion. We can obtain a good casting performance for casting aluminum alloy or processing plasticity and good deformation of aluminum alloy through artificial anodic oxidation and coloring.

5. Easy processing: After adding certain alloying elements, cast aluminum alloy with good casting performance or deformed aluminum alloy with good processing plasticity can be obtained.

If you are looking for high-quality automotive fastener screws & all kinds of plastic fasteners or technical support for structural design, please get in touch with me. Use our new Product Finder tool, download our Product Catalog, and let us help you get custom parts.adelajonly@gmail.com. Thanks. Website: www.juxinfasteners.com