Long Term Quality for Reinforcing Steel

Long Term Quality Level for AS/NZS 4671 Product

Clause 10.4 in AS/NZS 4671:2019 includes a requirement for tensile test results to be reported on test certificates. Owing to system limitations, InfraBuild Steel is currently unable to provide long-term quality (LTQ) levels directly on our test certificates. However, as an interim measure, we are providing a link from our test certificates to this webpage, where the long-term quality level is published. 

See tables on the document attached

Note – for some low volume products, it may not be possible to reach 200 test results in a reasonable time-frame. In this case, a larger multiplying factor is applied in the determination of LTQ level.

Long-term quality data from a facility operating under factory production control provides significantly greater confidence that the material conforms to AS/NZS 4671 when compared with a single batch test result. However, it is recognised that some customers will still want to see the test results for the actual batch supplied against an order. For this reason, we have decided to continue reporting the results of batch testing along with the LTQ data.