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Trade Names: Elkaloy 55, 38 and 30  
     
Type of Product: Cadmium free brazing alloys  
     
Composition and    
Melting Range:    
Alloy Ag    Cu    Zn    Sn  Melting Range oC  
 
Elkaloy 55 55     21    22      2   630-660  
     
Elkaloy 38 38     31    29      2   660-750  
   
Elkaloy 30 30     36    32      2   665-755  
     
Potential Health Hazards: The only potential health hazards involved with these products arise from their use.  On heating, metal and metal oxide fumes may be evolved but are unlikely to exceed the above stated OESs under normal conditions. However severe overheating could lead to the emission of fumes in harmful concentrations.  
     
  The Health and Safety Executive in their Guidance Note EH40 list the following Occupational Exposure Standards (OESs) for metals commonly used in cadmium free brazing alloys.  
     
  Long-term Short-term
  (8 hour TWA value) (10 min TWA value)
     
 Silver 0.1mg/m3 -
 
Copper fume          (as Copper) 0.2mg/m3 -
 
Zinc Oxide Fume 5.0mg/m3 10mg/m3
 
 Tin Compound    
 inorganic (as Tin) 2.0mg/m3 4.0mg/m3
     
  Zinc oxide fume if excessive can be irritating to the upper respiratory tract and can cause metal fume fever.  
     
  Metal fume fever can be caused by exposure to excessive fumes of copper and zinc oxides.  Symptoms are similar to those of influenza and often appear after a latent period of up to 10 hours.  They normally disappear after 24 hours with rest.  
     
Inhalation: In the event of inhalation of metal fumes the person should be removed from further exposure and into fresh air, if symptoms persist, medical attention should be sought.  

 

All Mallory Alloys Group products conform to, if not exceed, the relevant standards as assured by the Quality Management System Quality Management System - ISO 9002, EN 29002, BS5750-2


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