Overageing will lead to a loss of cast effect of production and hence incosistent feeding. Keeping an eye on the age of the wire is especially important when using the 4000er series of Aluminium.
As a general rule, you can say:
- - The 1000 series loses approx. 30% of its pre-tension within 4 weeks of storage.
- - The 4000 series loses approx. 90% of its pre-tension in the same period
- - The 5000 series loses only approx. 20%.