Material Type

Selecting the appropriate material for application requiresRaleighWe have a good understanding of the common materials used in扁line products. The correct material can prevent additional costs and malfunctions during operation. Carbon steel is a commonly used material. While stainless steel is more expensive than carbon steel, it offers better corrosion resistance and a wider working temperature range.

Carbon Spring Steel

65Mn

SWRH 72A/72B

SAE1070-1090

SAE1070-1090High-carbon tempered spring steel is the standard material for helical retaining rings and wave springs. The martensitic structure produced by oil quenching significantly enhances the material's tensile and yield strengths.

SAE1060-107

SAE1060-1075High-carbon hard-drawn spring steel is the standard material for clip retaining rings. Hard-drawn carbon steel does not have a grade as its strength is determined by the drawing process.

These carbon steel products, produced using these heat treatment processes, are suitable for environments with existing protective measures, as they can corrode in the absence of lubrication or sealing. Additional corrosion protection can be achieved through special surface treatments. The retaining rings and springs are typically supplied with an oil immersion surface treatment to provide protection during transportation and storage on shelves.

•Carbon steel is highly magnetic and can come in various colors, including blue, black, and gray.

Stainless Steel

302Stainless Steel

302Stainless steel is the standard material used for spiral retaining rings. Its widespread use is due to its combination of corrosion resistance and good physical properties.302The elasticity of stainless steel stems from the cold working process. Although it is non-magnetic stainless steel, after cold working,302It has a slight magnetic property. It cannot be hardened by heat treatment.

•302Metallic silver gray.

316Stainless Steel

316Stainless steel and302The physical properties and heat resistance of stainless steel are almost identical. Due to the presence of molybdenum, its corrosion resistance is higher, especially against pitting corrosion.316Stainless steel is commonly used in food, chemical, and seawater applications.

316Stainless steel has less magnetism than302Stainless steel. But with302Similar to stainless steel, its magnetism increases as the wire is cold rolled.316Stainless steel cannot be hardened through heat treatment.

•316Silver gray.

17-7PHPrecipitation Hardened Stainless Steel

The corrosion resistance of this alloy is302Stainless steel similar, but with higher tensile and yield strengths, suitable for special retaining ring applications. Resistant to fatigue and under high stress conditions,17-7The performance is superior to that of high-performance carbon steel.

Its elasticity is achieved throughCState sedimentation hardened toCH900Achieved through status. Therefore, the material can withstand.343℃Maintains high temperature without losing elasticity.17-7PHPrecipitation hardeningCH900The magnetic properties of the stainless steel are similar to those of high-carbon steel.

•After precipitation hardening,17-7Due to the open-air heat treatment, it presents in blue, brown, or silver, whereas the controlled air heat treatment offers bright colors.

Super Alloy

InconelX-750

This nickel-chromium alloy is commonly used in high-temperature and corrosive environments. Two commonly used chromium-nickel iron alloys are described as follows. Generally speaking,InconelX-750Through precipitation heat treatment to achieve spring condition. Such treated alloys can withstand high371˚CTemperature. Corrosion Engineers Association(NACE)Permitted to comply with specificationsMR-01-75（RC50Products processed by this hard tempering technique (high value) are used for spiral retainers and wave springs./Compressed Springs1Hardening number requires a longer heat treatment than spring hardening, with lower tensile strength, but offers high538˚CTemperature protection.

Spring tempering and1The tempering process can be conducted in either open-air or controlled atmosphere tempering furnaces. Open-air heat treatment may result in oxidation, often leading to slight black residue. A controlled atmosphere environment eliminates oxidation issues, resulting in no residue on the products produced.

•Retainers and springs made from this grade of chromium-nickel iron alloy are blue./Silver gray and non-magnetic.

Copper

25Beryllium copper alloy

Generally used in its hard temper state, this alloy exhibits excellent spring properties due to its combination of low modulus of elasticity and high ultimate tensile strength. The physical properties of this alloy are achieved through precipitation hardening. Compared to other copper alloys, beryllium copper alloys have high strength and their physical properties change little with increasing temperature.

•Beryllium copper alloys are non-magnetic. Their conductivity is approximately the same as that of phosphor bronze.2-4Multiple

AGrade Phosphor Bronze

Phosphor bronze offers excellent spring properties and conductivity, slightly inferior in performance to beryllium copper alloys. It is sold in spring temper to maximize spring characteristics.

•Phosphor bronze can only be hardened through cold working. This material also lacks magnetic properties.

Material Surface Treatment

Blackened

This surface treatment provides a matte black finish. Black oxide is more commonly used for aesthetic purposes rather than for enhancing corrosion resistance.

Galvanized

Zinc is commonly applied to carbon steel to enhance product corrosion resistance. Compared to cadmium plating, zinc plating is often used as a more cost-effective and environmentally friendly alternative. Our standard zinc plating solution includes:TypeVAndTypeVIAll complyRoHSCoating thickness is determined by the service condition number (SC(No.) The customer may decide to proceed with this. Galvanizing does not necessarily cover the gaps between each turn of the multi-coil spring. This process can cause the retainer to become hydride embrittled.RaleighOffer stainless steel as an alternative choice for cadmium and zinc plating.

Oiled

This isRaleighAll products produced with carbon steel feature standard surface treatment. Oil imparts corrosion resistance during transportation and daily storage. Oil immersion surface treatment should not be considered a permanent surface treatment.

Passivation

Passivation is an optional cleaning operation for stainless steel. It provides a shiny surface and enhances corrosion resistance. Passivation can dissolve iron particles and other substances embedded in the surface of stainless steel during the production process. If not dissolved, these foreign particles can lead to rusting, discoloration, and even electrochemical corrosion.

In theory, the corrosion resistance of stainless steel is provided by a thin, invisible oxide layer completely covering the retaining ring surface, which also prevents further oxidation. Removing contaminants can prevent the destruction of the oxide layer, thus achieving good corrosion resistance.

Phosphatized

The appearance is gray-black. Phosphatized corrosion resistance is better than black oxide, but not as good as cadmium-plated or stainless steel. Phosphatizing cannot be applied to stainless steel.

Steam De-greasing/Ultrasonic Cleaning

This is the standard cleaning and surface treatment for all stainless steel. The process uses chloride-based solvents to remove oil and other organic components from the material's surface. This solvent effectively removes grease from the exposed surfaces of retainers or springs.

Flow solvent between each circle of the baffle by ultrasonic means.

Vibration Deburring/Manual burr removal

AlthoughRaleighAll circumferential surfaces and edges of the retaining ring are smooth, but due to shearing operations, sharp corners are always present at the gap end. To remove the sharp corners and achieve coordination/Smooth surface finish, allowing for deburring via vibration or manual deburring of the retainer to meet your requirements.