Materials - AneLast ® line

AnelBras® retaining rings are manufactured as standard from high-grade spring steel, selected based on the special characteristics required for the various ring applications.

All types of rings in this AneLast ® line are made from High Carbon Steel as standard. Some dimensions for some types may be available in other materials cited below, upon request, or may be developed under technical and economic feasibility analysis, only if the demand for quantity is high and the life of the project is long.

High carbon steel:

The selection of the raw material is based on its performance characteristics, such as high modulus of elasticity, high yield point, high elastic elongation and good hardening abilities; are achieved best by spring steels according to DIN EN 10132-4. Material C75S, material No. 1.1248 is a good example. This is a high carbon spring steel with high purity, having low phosphorus and sulfur content.

The rings, when already geometrically formed, are hardened using the appropriate heat treatment processes (isothermal or austemper bainitic hardening that provides an excellent elastic regime with high toughness) to allow them to absorb high axial forces when installed in the groove, ensuring that the rings can be assembled without problems. It is interesting to note that larger rings have less hardness, because the stresses placed on them during assembly are not as high as the stresses placed on smaller rings.

This makes our products ideal when applied to critical systems.

The hardness of the rings is specified in terms of Rockwell or Vickers values, depending on the size and thickness of the ring.

For the SW, RW, SB and RB lines, rings with constant section for holes and shafts, materials C58 D according to DIN EN 10016-2, C58 D2 according to DIN EN 10016-4 and DIN EN 10270-1 are applied.

Special Materials:

In addition to the high-carbon spring steels mentioned above, corrosion-proof materials are also used. The following materials are also available to manufacture SEEGER ® retaining rings from our AneLast ® line:

Bronze CuSn6 / CUSn8:

Material number: 2.1020.34, although it has a high resistance, this material has a lower elastic regime than spring steel. Therefore, the rings made from this bronze tend to plastic deformations in the smaller dimensions that require higher tension during use and assembly; although adjustment in the groove is almost always guaranteed. Compared to spring steel, the lower modulus of elasticity of this material (115,000 N / mm²) results in a reduction in load capacity and resistance to disassembly when subjected to high speeds.

On the other hand, tin bronze is antimagnetic and, even at low temperatures, does not show any tendency towards embrittlement. They are widely used in sanitary applications, where the resistance and type of corrosion that the bronze presents guarantee the demand for these applications.

Corrosion Resistant Stainless Steels:

1. Designation: X 39 CrMo 17.1, material number 1.4122, hardenable martensitic chrome steel, achieves excellent elastic regime, does not have the corrosion resistance of the austenitic nickel steels, but is sufficient for numerous applications and is used mainly in the manufacture of small size rings and medium, which demands high stress during assembly and use. Not suitable for very corrosive applications, where the ring is immersed in water or corrosive liquids and applications that have direct contact with food, beverages or surgical equipment.

2. Designation: X l2 CrNi 17 7, material number 1.4310 (equivalent to AISI 302/304), this material is an austenitic stainless steel with good corrosion resistance, particularly suitable for cold hardening. Rings of the AneLast Line “A” and “J”, respectively according to DIN 471 and DIN 472 with dimensions greater than 100 mm of nominal diameter (concentric shape) and the retaining rings of the SW and SB lines (constant profile) can be manufactured with this material. They serve most applications, however, not suitable for immersion in highly corrosive liquids, saline water and surgical applications.

Note:

All stainless steels are susceptible to specific types of corrosion which, in certain circumstances, can lead to sudden failure of the ring assembly due to brittle fractures. It is absolutely necessary to pay attention to the specific characteristics of these materials when used in certain corrosive media. The risk of stress corrosion can be minimized by reducing the stress. Therefore, the depths of the grooves must be designed so that the rings are assembled with a minimum of tension.

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