Corrosion resistant alloy CRA
Corrosion is the gradual destruction of materials (often metals) due to natural processes such as oxidation. It occurs when materials are exposed to the environment and are attacked by liquids or gasses whose actions instigate chemical reactions.
Corrosion resistance is the ease with which materials react to potentially corrosive conditions. Corrosion resistant materials are generally able to withstand deterioration and chemical breakdown.
There are some pure metals (known as corrosion resistant metals) such as gold and platinum that have some natural resistance to corrosion. There are also corrosion resistant alloys (CRAs) created to have corrosion resistance, such as a different types of stainless steel.
An alloy is an impure substance (admixture) comprising a mixture of metals, or a metal to which small additions of other metals and non-metals have been added to give it desired properties. The result is a compound that is likely to be superior in performance to pure metal and may be more economical.
CRAs are particularly important in the gas and oil industries and can be created by combining substances such as chrome, cobalt, iron, nickel, stainless steel, titanium and so on.
[edit] Related articles on Designing Buildings
Featured articles and news
How can digital twins boost profitability within construction?
A brief description of a smart construction dashboard, collecting as-built data, as a s site changes forming an accurate digital twin.
Unlocking surplus public defence land and more to speed up the delivery of housing.
The Planning and Infrastructure bill oulined
With reactions from IHBC and others on its potential impacts.
Farnborough College Unveils its Half-house for Sustainable Construction Training.
Spring Statement 2025 with reactions from industry
Confirming previously announced funding, and welfare changes amid adjusted growth forecast.
Scottish Government responds to Grenfell report
As fund for unsafe cladding assessments is launched.
CLC and BSR process map for HRB approvals
One of the initial outputs of their weekly BSR meetings.
Architects Academy at an insulation manufacturing facility
Programme of technical engagement for aspiring designers.
Building Safety Levy technical consultation response
Details of the planned levy now due in 2026.
Great British Energy install solar on school and NHS sites
200 schools and 200 NHS sites to get solar systems, as first project of the newly formed government initiative.
600 million for 60,000 more skilled construction workers
Announced by Treasury ahead of the Spring Statement.
The restoration of the novelist’s birthplace in Eastwood.
Life Critical Fire Safety External Wall System LCFS EWS
Breaking down what is meant by this now often used term.
PAC report on the Remediation of Dangerous Cladding
Recommendations on workforce, transparency, support, insurance, funding, fraud and mismanagement.
New towns, expanded settlements and housing delivery
Modular inquiry asks if new towns and expanded settlements are an effective means of delivering housing.
Building Engineering Business Survey Q1 2025
Survey shows growth remains flat as skill shortages and volatile pricing persist.