Historically all strapping had been handled using steel but now many organisations are moving to polyester. This migration is being driven by several factors. These include cost when the steel price is high and ease of handling associated with the lower weight of polyester. Polyester is also safer when cut under tension.
Polyester strapping is generally cheaper than steel, especially when the price of steel is at a peak. However, if the only consideration for change is price then you will need to remember to factor in the price of the new strapping tools that will be required. Thankfully, the range of polyester strapping tools is growing all the time.