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This section provides an overview for annealing as well as their applications and principles. Also, please take a look at the list of 10 annealing manufacturers and their company rankings. Here are the top-ranked annealing companies as of December, 2024: 1.Magnetic Metals Corp..
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Annealing, also known as "diffusion annealing," is a type of heat treatment that diffuses and homogenizes segregated elements created in a steel ingot during steelmaking.
In the molten state, heterogeneity between the surface and the interior, especially the center, of a steel ingot is inevitable, but homogenization improves the quality of the product. Annealing is generally performed for a long time in the austenitic temperature range, which is a high temperature range.
The austenite temperature range refers to the temperature range where austenite, one of the four types of carbon iron, becomes austenite.
Annealing is used to homogenize the inhomogeneities that occur during the steelmaking process of high-alloy steels (e.g., tool steels).
There are several different annealing methods, such as "full annealing," "spheroidizing annealing," "isothermal annealing," and "stress relief annealing," each used for different purposes. The lowest temperature is for stress-relief annealing, at about 700°F.
Starting with the highest annealing temperature of just under 1,800°F, annealing temperatures progressively decrease to "isothermal transformation annealing," "complete annealing," "spheroidizing annealing," and "stress-relieving annealing."
The purpose of different annealing methods varies; for example, isothermal transformation annealing improves machinability, complete annealing homogenizes the structure by aligning the grain size, spheroidizing annealing improves workability, and stress relief annealing prevents cracking during use by removing residual stress.
The effects of annealing vary depending on the material. Free-cutting steel prevents red hot brittleness, bearing steel removes carbide segregation, tool steel improves machinability and extends service life, stainless steel improves corrosion resistance, and heat-resistant steel improves creep strength.
Heat treatments include "quenching," "tempering," and "normalizing," each with a specific purpose: quenching increases hardness, tempering after quenching improves tenacity, and normalizing reduces micro-structural irregularities and improves impact resistance.
*Including some distributors, etc.
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Accurate Metal Products, Inc. is a manufacturer of custom plate and steel products and services that was established in 1992 and is headquartered in Milwaukee, Wisconsin, USA. The company custom manufactures steel sheet and plate products, along with offering steel processing services like oxyfuel flame cutting, plasma cutting, heat treating, Blanchard grinding, and abrasive blasting. These products and services are utilized by diverse industries including manufacturing, construction, and agriculture. The company also offers a wide range of services, including design, engineering, manufacturing, and testing.
Worthington Industries Inc., founded in 1955 and headquartered in Worthington, Ohio, is a manufacturer of fiberglass, carbon, and stainless steel tanks. Its offerings span various categories, including steel processing which involves the processing of hot rolled, cold rolled, coated, and galvanized steel products. Additionally, the company offers pressure cylinders for storing and transporting gases and liquids under pressure, engineered cabs for enhanced operator comfort and safety in vehicles, as well as cryogenics solutions for low-temperature storage and transport of cryogenic liquids and gases. The company has earned the John Deere Partner-level Supplier award for 11 consecutive years.
Magnetic Metals Corporation (MMC) is an American ISO 9001:2015 and AS9100 Rev D-certified manufacturer of magnetic assemblies and components established in 1942. Located in Cherry Hill, New Jersey, the company produces various magnetic cores including nanocrystalline, amorphous and toroidal models, as well as common mode chokes and current transformers for use primarily in the defense, aerospace, automotive, and renewable energy industries. They also offer prototyping, engineering and testing services for custom magnetic assemblies as commissioned by customers.
California Fine Wire Co. was founded in 1961 and is headquartered in Grover Beach, California, US, as a manufacturer of metal and alloy wire products. The product portfolio includes various wires like drawn, insulated, electroplated, stranded, and flat ribbon wires, along with services such as wire straightening, packaging, and research. These products are applied in aerospace for navigation, communication systems, and deep-space probes; in electronics for consumer electronics, semiconductors, and sensors; and in the medical sector for devices like pacemakers and catheters. They cater to industries like aerospace, electronics, and medical, supporting a wide range of applications.
Globe Products Co. Inc., headquartered in Ennis, Texas, has been manufacturing ferrules, eyelets, and other deep draw stampings since 1981. The company specializes in metal stampings and provides plating and annealing services. It serves as a source for metal stamping products, accommodating both short runs and large orders, and offers standard parts and custom solutions. The company maintains a fully equipped machine and welding shop to support its operations, facilitating in-house production and tooling engineering.
The Cincinnati Steel Treating Company, established in 1941 and headquartered in Cincinnati, Ohio, is a service provider offering various heat treating services with additional locations in Columbus (Ohio), Indianapolis (Indiana), and Dayton (Ohio). The company's service portfolio comprises press quenching, induction hardening, blast cleaning, tool steel processing, and sub-zero metal treating. The company serves domestic and global customers in the mining, machine tool, heavy equipment, foundry, and steel fabrication industries. It is also IATF 16949 and ISO 14001 certified to serve the automotive market.
Dobson Gaskets was founded in 1963 in West Yorkshire, UK is a manufacturer of full-range gaskets. The company provides a diverse array of gasket products, including classic car gaskets, spiral wound gaskets, graphite gaskets, and non-asbestos gaskets, among others. These gasket and sealing components serve a wide range of industries, including petrochemical refineries, pipeline engineering, water treatment plants, and pump manufacturing. The gaskets are made from various materials such as copper, stainless steel, graphite, and rubber.
Miller Plastic Products, Inc., founded in 1969 with headquarters in the USA, is a custom manufacturer of plastic tanks and components. The company's products include acid process tanks, kynar pipes and pipe fittings, dip pipes, headers, and manifolds. Miller Plastic Products, Inc. has expanded its product line to include PPE and other occupational health and safety accessories. The company also offers custom CNC machining, annealing services, custom plastic fabrication for plastic lab equipment, wet benches, sinks, counter tops, and cabinet systems.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Magnetic Metals Corp. |
66.7%
|
| 2 | Dobson Gaskets |
33.3%
|
Derivation Method
The ranking is calculated based on the click share within the annealing page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
7 | 87.5% |
|
United Kingdom
|
1 | 12.5% |
