Spring wire is an elastic, formable metal wire designed for the production of technical springs and components that require reliable spring-back behavior. It can be mechanically deformed and will return to its original shape within defined limits, making it ideal for dynamic, repetitive movements.
Spring wire is used in many forms, including:
- Compression springs
- Extension springs
- Torsion springs
- Form springs and clips
- Electrical contact springs
Materials:
Spring wire is not limited to steel. Depending on the application, spring wire is made from a variety of materials, such as:
- Spring steel (e.g. C75, music wire, stainless steel grades like 1.4310)
- Copper alloys (e.g. beryllium copper, phosphor bronze)
- Titanium and nickel-based alloys for lightweight or high-temperature uses
- Plastic spring wire in specialized insulating or lightweight applications
Each material offers specific advantages in terms of mechanical strength, corrosion resistance, electrical conductivity, or thermal behavior.
Key properties:
High-quality spring wire provides:
- High elasticity and consistent spring-back
- Excellent fatigue resistance for cyclic loads
- Tight dimensional tolerances and formability
- Adaptability to specific mechanical, electrical, or environmental requirements
Application fields:
Spring wire is widely used in:
- Automotive and aerospace engineering
- Electrical and electronic components
- Medical devices and miniature mechanisms
- Mechanical and plant engineering
- Consumer products (e.g. pens, clips, switches)
Standards and variants:
Spring wire is available in various international standards:
- EN 10270 series (for steel spring wires)
- ASTM B197 (for beryllium copper)
- Other specifications depending on material and region
It is supplied in round, flat, or profiled form, and in raw, coated, or pre-tempered conditions.
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