Innovative light weight and miniature springs offer application potential in the aerospace industry

Written by: Lee Spring Ltd | Published:

New plastic composite springs that combine the strength of metal with the special attributes of high performance engineered thermoplastics and metal alloy springs manufactured from wire slightly thicker than a human hair are expected to open up new applications in the aerospace sector.

Described as a breakthrough in spring technology LeeP™ plastic composite compression springs are manufactured in different formulations of Ultem PEI (polyetherimide) resin and presented in six colour coded strengths: red, orange, yellow, green, blue and violet, the strongest. Standard sizes and custom design options are available to meet performance requirements.

Plastic composite springs have many performance differentials with metal springs including high strength to weight ratios, mechanical and thermal stability at temperatures up to 170oC (340oF) and excellent corrosion resistance. Additionally they are non-magnetic, offer dielectric insulation, low flammability and are recyclable.

Developed to meet the challenge of miniaturisation Bantam™ Mini compression springs are designed to combine strength with corrosion resistance. The smallest size spring features a wire diameter size of 0.102mm (0 .004ins). Manufactured in non-magnetic, high strength Elgiloy®, a cobalt-chromium-nickel alloy, the springs have superior corrosion resistance and can be used at temperatures up to 454°C (850°F).

Typical application areas include retention, closure and control devices.

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