For a number of years, low nickel or ‘out of spec’ stainless steels have been appearing on the world market.
Often they are out of spec because the percentage of nickel or molybdenum is too low, or because the lower grade 200 series grade stainless steel is being sold as 304 or 316.
“There are grades of stainless steel being imported into New Zealand that have manganese substituted for nickel,” says stainless steel expert, and New Zealand’s consultant to the Nickel Institute, Les Boulton.
“These alloys have still got the same appearance, still got the same mechanical properties, and still got the same magnetism as the conventional grades of stainless like 304 or 316, but their corrosion resistance is definitely inferior to the 300 series austenitic stainless steel.
“It can result in premature rusting, deterioration, general surface corroding, much more quickly, than the other alloys. These manganese stainless steels are excellent for making pots and pans, but once put outside in New Zealand’s marine environment, they will suffer tea staining and corrosion very quickly,” he says.
To safeguard against the risk of inferior stainless, Anzor has recently launched an inwards goods material testing programme using highly sophisticated x-ray spectrometer equipment to statistically check product as it arrives.
“We have always protected customers by only dealing with the most reputable suppliers. Now this testing programme allows us to give our customers the added peace of mind that they are purchasing the highest quality stainless steel available in the market,” says joint chief executive Jamie Hunt.
Anzor Fasteners has six branches throughout the country and stock the widest range of stainless steel fasteners, fittings and hardware in New Zealand.
For more information:
Tel: 0508 426 967
Online catalogue, visit www.anzor.co.nz