The BSSA. • Who we are! • What we do! • Stainless Steel. • Types and Structure. • Properties: mechanical, physical, corrosion resistance. marks the th anniversary of stainless steels. To mark this event, Alan Harrison of the British Stainless Steel Association (BSSA) has revised his popular . The BSSA Guide to Understanding Stainless Steel is now available to buy. Designed to give a basic knowledge of stainless steel to people.

Author: Sharisar Magor
Country: Mauritius
Language: English (Spanish)
Genre: Environment
Published (Last): 1 February 2016
Pages: 25
PDF File Size: 16.45 Mb
ePub File Size: 18.27 Mb
ISBN: 593-3-21040-724-7
Downloads: 58991
Price: Free* [*Free Regsitration Required]
Uploader: Akinosar

Design, construction and technology Knowledge level: Also, careful storage and handling including protective coating films are required prior to and during installation to minimise risk of damage to the stainless steel structure.


Mechanical cleaning is the most effective way to remove them. Prevention would be better.

The Scheme gives owners and specifiers of stainless steel greater certainty that fabrications using stainless steel will be performed by technically competent industry specialists. Welding The high temperature characteristics of welding can introduce surface and other defects which must be addressed.

Stainless Fabrication: Common Traps to Avoid

A primary goal of the stainless steel industry is to have finished products put into service in a ‘passive’ condition free of corrosive reactions. Crevice corrosion is commonly found in crevices where oxygen is restricted and in low pH environments like sea water.

Stress corrosion, or chloride stress corrosion, occurs when sainless occur while the metal is under tensile sfainless. With just a few exceptions — gold, palladium and platinum — all metals corrode.


Galvanic Corrosion Chart eStainlessSteel: While steek corrosion resistance is incredible, stainless steel will corrode under certain circumstances. Embedded iron, heat tint and some other contaminants can be removed by acid pickling, usually with a nitric-hydrofluoric acid mixture or by electropolishing. There are different grades of stainless steel and each resists sulfuric acid corrosion differently as BSSA explains.

Understanding stainless steel is unedrstanding to its successful application. Based in Sheffield, the Association provides marketing support, technical advice, information, training and education in all aspects of stainless steel. This chromium layer is Angstroms — or millionth of a centimeter — in thickness according to WorldStainless.

Provides architects with practical guidance on the specification of stainless steel, including material grade, surface finish and flatness criteria, and factors influencing the cost of different specifications. Organic solvents should remove soft adhesive particles.

German Stainless Steel Development Association (ISER)

Stainless Steel for Architects. Once damaged, corrosion may initiate. Erosion is caused by an abrasive fluid flowing past a metal at high velocity, removing its protective layer. Mechanical Cleaning Wire brushing should only be done with stainless steel bristles that have not been used on any other surface but stainless steel.

Surface Contaminants Common contaminants understahding to attack stainless steel include carbon steel and common salt. Stainless Steel in Swimming Pools.

Deleterious oxides of chromium may develop on each side and on the under surface of welds and ground areas. If left to harden, adhesives form sites for crevice corrosion and are difficult to remove. What Is Electrolytic Copper? What is Stainless Steel? Contact us General enquiries: Galling and its Control FAQ 6: These oxides lower the corrosion resistance of the steel and during their formation the stainless steel is depleted of chromium.


Passivating, unlike pickling, will not cause a marked change in the appearance of the steel surface.

It is also important to remove any zinc that might be present. Design, construction and technology. Practical guidance on design.

BSSA Understanding Stainless Steel “Centenary Edition”

Scratches and gouges form crevices on the steels surface, allowing entrapment of process reactants or contaminants, providing ideal locations for corrosion. Common Traps to Avoid Surface damage, defects and contamination arising during fabrication are all potentially harmful to the oxide film that protects stainless steel stainkess service. Methods of Plating Stainless Steel. All should be avoided. The anode end of a battery is corrosive, while the cathode end bssa passive and no corrosion occurs.

Passivation Passivation involves treating stainless steel surfaces with, usually, dilute nitric acid solutions or pastes. These processes remove, in a controlled manner, from the affected areas, the dark oxide film and a thin layer of metal under it, leaving a clean, defect-free surface.

The Effects of Saltwater on Metals.