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What is difference between 18/10 and 9 ply surgical stainless steel

In process of buying cookware and would like to know the difference between 18/10 and 9 ply surgical stainless steel.

Jacquelyn Nawrocki
Gunter's Machine Shop - Suches, Georgia, USA
2006

18/10 or 18-10 indicates an 18% Cr + 10% Ni stainless steel such as 304.

Some cookware has a highly conductive layer of aluminum or copper sandwiched between thin stainless steel outer layers, so can be considered 3-ply. 9 ply is meaningless unless further defined; maybe a bulletproof tire?

'Surgical stainless steel' is sales hype unless certified to a specification such as ASTM F138 or ISO 5832-1.

Ken Vlach [deceased]
- Goleta, California

Finishing.com honored Ken for his countless carefully researched responses. He passed away May 14, 2015.
Rest in peace, Ken. Thank you for your hard work which the finishing world, and we at finishing.com, continue to benefit from.
2006

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