Bolton Manganese Bronze Ltd, formerly Cerro Manganese Bronze Ltd, is a member of the Bolton MKM Group  
 of Companies. The company was established in London in 1876. It was one of the first in the world to extrude 
 aluminium bronze and other copper based alloys. In the proceeding years, we have become a world leader in 
 the manufacture of bronzes and special brasses by extruding, forging or hot rolling. 
 
 Bolton Manganese Bronze has a global reputation for quality which has enabled us to be recognised by the 
 majority of the world’s leading contractors for defence and aerospace. The company has approvals to 
 ISO 9001:2000,  AS9100 Rev B, Boeing, Airbus, Rolls Royce, British Areospace, British Airways, Raytheon, 
 Messier Dowty world wide and many others.
         
 Alloys can be released to the majority of international specifications and the subsequent data sheets covers 
 the main products within our manufacturing range. If you are unable to locate the alloy you require, or you 
 need advice on specific applications, our experienced sales and metallurgical support teams will be pleased 
 to offer their advice.  

  
   Analysis is conducted at the casting stage,
   by an X-ray spectrographic method as
   illustrated in the photograph, with records
   being maintained for 20 years. This ensures
   that our alloys comply with the chemical 
   analysis requirements. 

 Over 90% of the orders processed within   
 the company require full certification.
 Mechanical testing is conducted by the 
 latest Avery Denison computer controlled 
 tensile machine in conjunction with 
 hardness, impact and micrographic 
 examination.  
 
   In addition to analysis, mechanical testing, 
   visual inspection and dimensional checks,
   we also regularly carry-out ultrasonic testing 
   procedures. Here again certification is 
   prepared in line with the requirements    
   of National and International Standards and 
   recognised release bodies 
 

 
Bolton Manganese Bronze Limited
  P.O Box 22,
  Hadleigh Road,
  Ipswich, Suffolk,
  IP2 OEG, England 
 
  Tel: 01473 252127  Fax: 01473 218229    
  International
            Tel 44 1 473252127 Fax: 44 1473 218229            
              e-mail: sales@boltonmb.com