Material Type

Selecting the appropriate material for the 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. Although 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 retainers and wave springs. The martensitic structure resulting from the oil-quenching process significantly enhances the material's tensile and yield strengths.

SAE1060-107

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

These carbon steels produced by these tempering 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 retainers and springs are typically supplied with an oil immersion surface treatment to provide protection during transportation and storage on shelves.

•Carbon steel has high magnetic properties and can exhibit various colors, including blue, black, and gray.

Stainless steel

302Stainless Steel

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

•302Silver gray.

316Stainless Steel

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

316Magnetic property of stainless steel is less than302Stainless steel. But with302Stainless steel, like other metals, its magnetic properties increase 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 equivalent, but with higher tensile and yield strengths, suitable for special snap ring applications. Resists fatigue and high stress conditions.17-7The performance is superior to that of high-performance carbon steel.

Its elasticity is achieved byCState sedimentation hardened toCH900Achieved through status. Therefore, the material can withstand.343℃Retains elasticity at high temperatures without loss.17-7PHPrecipitation HardeningCH900The magnetic properties of the state 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, while 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. In most cases,InconelX-750Achieved spring condition through heat treatment precipitation. The alloy treated in this manner can withstand high371˚CTemperature. Corrosion Engineers Association.(NACE)Permitted to comply with specificationsMR-01-75（RC50Products with this hard tempering process (high value) are used for spiral retaining rings and wave-shaped components./Coiled Springs1Numbered tempering requires a longer heat treatment than spring tempering, with lower tensile strength, but offers high538˚CTemperature protection.

Spring tempering and1Numbered tempering can be heat treated in an open-air or controlled atmosphere tempering furnace. Open-air heat treatment may result in oxidation, often leading to slight black residues. A controlled atmosphere environment eliminates oxidation issues, resulting in no residues on the produced products.

•Retainer and spring made from this grade of chromium-nickel-iron alloy are blue in color./Silver gray and non-magnetic.

Copper

25Beryllium copper alloy

Typically used in its hard temper state, this alloy offers excellent spring characteristics due to the 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 exhibit high strength and minimal change in physical properties with increasing temperature.

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

AGrade Phosphor Bronze

Phosphor bronze offers excellent spring properties and conductivity, with slightly lower performance compared 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 does not possess magnetic properties.

Surface Material Treatment

Turn black

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

Galvanized

Galvanized zinc is applied to carbon steel to enhance the product's corrosion resistance. Compared to cadmium plating, zinc galvanizing is often used as a cost-effective and environmentally friendly alternative. Our standard galvanizing solution is:TypeVAndTypeVIAll meetRoHSCoating thickness is determined by the service condition number (SC(No.) Decision, the customer can opt for this. Galvanizing does not necessarily cover the part between each spring coil. This process can cause the retainer to undergo hydrogen embrittlement.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, stainless steel's corrosion resistance is provided by a thin, invisible oxide layer completely covering the retainer surface, which also prevents further oxidation. Removing contaminants can prevent the destruction of the oxide layer, thereby achieving good corrosion resistance.

Phosphatized

The appearance is gray-black. The corrosion resistance of the phosphate is better than that of black oxides, but not as good as cadmium-plated or stainless steel. Phosphate cannot be applied to stainless steel.

Steam Degreasing/Ultrasonic Cleaning

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

The solvent flows between the rings of the retainer through ultrasonic action.

Vibration Deburring/Manual burr removal

AlthoughRaleighAll circumferential surfaces and edges of the retaining ring are smooth, but due to the shearing operation, sharp corners are always present at the gap ends. To remove the sharp corners and achieve coordination/Smooth surface finish; can be deburred by vibration on the retaining ring or manually, to meet your requirements.