AISI Steel Specifications

At West Yorkshire Steel we can supply you with AISI steel grades and also AISI equivalent grades to British & European standards. Please contact us with your specific requirements and we shall endeavour to help.AISI steel grades (American Iron & Steel Institute) are becoming increasingly popular in the UK, primarily due to their use in the oil and gas industry. We hold a comprehensive range of stock in AISI material and AISI equivalent specifications. Of AISI steel grades available the majority are as carbon steels and alloy steels. AISI carbon steels and alloy steels are usually given a four digit number, the first two digits indicate the alloying element in the AISI specification and the last two digits indicate the amount of carbon in the specification. AISI materials grades are shown in the table below, as to how the four digit number