Aerospace

  Lynch Metals, Inc. stocks the most comprehensive of coil and sheet products for 
 manufactures of Heat Transfer products used in the aerospace markets. For smaller 
 heat transfer jobs that are dip brazed, we stock eight different gauges in  both 
 21F and 22F alloy classification. Gauges in stock begin as low as .020" and as 
 heavy as .250" thick, and all are leveled to 36" wide and 72" long.

  For larger production runs, material can be produced to your specific length and width
 while reducing scrap and improving efficiency. Small mill minimums are available for special
 alloy combinations and/or cladding thickness.

Parting Sheet

  Lynch Metals, Inc. offers several products for parting sheet applications. Brazing
 sheet # 8 (3003 core with 4004 cladding on two sides), is stocked in several gauges in
 both flat sheet and coil. For higher strength requirements, Brazing Sheet # 14
 (6951 core with 4004 cladding on two sides) is available.  We also offer a three layer
 parting sheet product called Multiclad, which offers several advantages over products that
 only offer two layers.
  

Multiclad™

  Multiclad is a three layer product that offers several advantages over brazing sheet
 products consisting of only two layers. By adding an interlayer between the cladding and
 the core layers, multiclad has reduced the silicon penetration that occurs during brazing.
 The 3003 interlayer inhibits silicon from the cladding to diffuse into the core material.
 By eliminating this process, more molten braze material is available for fillet formation.

  This product has proven to benefit our customers by reducing leak rates while allowing them 
 to down gauge their product due to Multiclad's stronger heat treatable core. By using 
 Multiclad to down gauge the parting sheet, the direct benefit is an overall reduction in 
 the critical weight of the part.
  
 As a direct result the following benefits occur:

    1) Improved brazeability due to more braze material available.
       Reduced risk of intergranular corrosion and silicon penetration.

    2) Improved strength of the finished product., since AA6000 alloys can
       be substituted for lower strength AA3000 alloys in the core material.

    3) By using multiclad instead of a non-heat treatable alloy, you will
       increase the yield strength by a factor of up to five. This will offer
       the possibility of reducing metal thickness.

  Compared to common heat treatable alloys Multiclad gives the same strength using a
 thinner sheet or strip. Multiclad gives enough braze cladding to ensure tight joints
 and an unaffected core to provide excellent corrosion resistance.
    

Common Heat Treatable Aluminum	Non-Heat Treatable Aluminum
Multiclad	Multiclad

Custom alloy combinations with heat treatable core available. Low minimum quantity.

Fin Stock

  Several alloys are used to form fins for heat exchangers. Lynch Metals, Inc. has the
 largest inventory of brazing alloys in the world. Items are stocked in wide width coil
 ranging from 12.00" to 48.00". These coils can be precision slit to your specific width,
 therefore eliminating scrap and the cost of processing. By processing each order individually,
 we can supply you with the exact quantity required within 3-5 days after release. Material is
 specially packaged to prevent damage in transit.