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What is 18/8 stainless steel

2014-11-08 05:08
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If you found the ” SS18/8 ” lable when we buy the stainless steel flatware, cutlery , cookware , kitchen utenils and other stainless steel tableware products, what did they mean and how to choose ? 


The SS18/8 material we also said the SS201 material in the stainless steel tableware and kitchenware products, but the price of SS18/8 is higher than SS18/0 material.

SS18/8 – SS201  elemental composition:


Carbon ( C )

Silicon ( Si )

Manganese ( Mn )

Phosphorus ( P )

Sulfur ( S )

Nickel ( Ni )

Chromium ( Cr )



under 0.15%

under 1.00%

5.5% to 7.5%

under 0.04%

under 0.03%

3.5% to 5.5%

16.0% to 18.0%



You can be find the Nickel elemental  content which is about 3.5% to 5.5% in the SS18/8 material, but the SS18/0 material is under 0.6%, it’s why the SS18/8 is expensive than SS18/0 material.

The Nickel is also important same as Chromium in the stainless steel, please check the following reason: 

a) the Nickel and Chromium are mixed together,  it can strengthen the corrosion resistance

b) increase the toughness

c) increase the strength


Aispoon is prefessional manufacturer and exporter of stainless steel cutlery& flatware, plastic handle cutlery&flatware, stainless steel kitchen utensils and stainless steel cookware products, if you have any problems, welcome to contact with us ” sales@aispoon.com “.