Repco Technology Ltd.
Middlemarch Business Park
Telephone: 02476 214442
Hardened, rust-resistant special spring steel strip 1.4031 (AISI 420)
As a result of the alloying with 13% Chrome and 1% Molybdenum, this alloy is corrosion-resistant against damp air, water vapour and water, but is not sufficiently resistant to chloride ions and acids.
The advantages of this steel lie in its good wear-resistance and minimum internal tensions.
With a tensile strength of 1700–1950 N/mm², this material is ideal for springs, gauges, tools and knives.
In a particularly high-quality design, this material is also suitable for flapper valves.