worldsteel represents over 160 steel producers (including 9 of the world's 10 largest steel companies), national and regional steel industry associations, and steel-research institutes. worldsteel members represent around 85% of world steel production.

Membership has increased steadily since worldsteel (formerly the International Iron and Steel Institute (IISI)) was founded in 1967.

Who can become a member?

Steel-producing companies are eligible for either regular or associate membership. Associations, federations and research associations that deal primarily with the steel industry are also eligible for membership. There are three categories of membership:

  • Regular
    Regular members produce at least two million short tons of raw steel per annum and operate as independent commercial enterprises. State-controlled companies must be free to make their own economic and investment decisions and operate in a market-based economy. Regular members are entitled to vote at meetings of the board of directors.
  • Associate
    Any steel-producing company other than a regular member or a steel-producing company with the potential to become a regular member.
  • Affiliated
    Steel and steel-related industry associations, federations and steel research organisations are eligible to join as affiliated members.


Benefits of membership
  • Members have access to the latest technical and economic data on industry trends and performance affecting the steel industry through the member-only extranet.
  • Membership provides the opportunity to obtain member-only data, reports, publications and authoritative works on specialist subjects.
  • Members are given the opportunity to become involved at an international level in common market development programmes and initiatives.
  • Membership also offers the possibility of networking with other steel industry professionals from around the world at meetings, events and the annual conference.
  • Members have access to the latest technical and economic information affecting the industry. Membership provides an opportunity to obtain data on trends and performance, and to become involved at an international level in market development programmes and initiatives.
  • Membership also offers participation in all Committees and Working Groups and attendance at the Annual General Meeting, the Board and the annual conference.
  • Another benefit is the opportunity given to member companies to send high-potential employees to worldsteel to work on specific projects and gain knowledge of the industry at a global level.

The association exerts no pressure or politics on its members. worldsteel is not involved in competitive issues between steel companies.