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Frequently Asked Questions

These are some of the questions that we frequently get asked.

  1. What Is Stainless Steel?
  2. When was stainless steel discovered?
  3. What is stainless steel used for?
  4. Does stainless steel corrode?
  5. What forms of corrosion can occur in stainless steels?
  6. How many types of stainless steel are there?
  7. What are the correct standards for stainless steel?
  8. Is stainless steel non-magnetic?
  9. Can I use stainless steel at low temperatures?
  10. Can I use stainless steel at high temperatures?
  11. What surface finishes are available on stainless steels?
  12. How do I choose which stainless steel to use?
  13. What is 'multiple certification'?

What is 'multiple certification'?

This is where a batch of steel meets more than one specification or grade. It is a way of allowing melting shops to produce stainless steel more efficiently by restricting the number of different types of steel. The chemical composition and mechanical properties of the steel can meet more than one grade within the same standard or across a number of standards. This also allows stockholders to minimise stock levels.

For example, it is common for 1.4401 and 1.4404 (316 and 316L) to be dual certified - that is the carbon content is less than 0.030%. Steel certified to both European and US standards is also common.

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Office and Postal Address: BSSA, Regus, Blades Enterprise Centre, John Street, Sheffield S2 4SW

Registered Office: Pegasus House, 463A Glossop Road, Sheffield S10 2QD

Tel: +44 (0)114 292 2636    |     Email: admin@bssa.org.uk

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