Automotive
Lynch Metals, Inc. has established itself as a specialty distributor of aluminum brazing products for the automotive industry. By working closely with our mills metallurgical staff, we can provide our customers with the best technical support and analysis in the industry. By working closely with our mills' metallurgical staff, we can provide our customers with the best technical support and analysis of the industry.
| Our Products are used in a multitude of applications such as: | |
| Charge air coolers: |
Internal turbulator fin and external fin in both 3003 bare or clad two sides with either 4004, 4104, or 4343. Header and side support stock clad one or two sides with either 4004, 4104, 4343, or 4045 for vacuum or controlled atmosphere brazing. |
| Serpentine or parallel flow condensers: | Alloy 3003 fin clad two sides with 4343 which is used in conjunction with extruded tubes. 3003 coiled strip for pierced and rolled manifolds or stamped headers in both 4045 or 4343 two side clad for controlled atmosphere brazing. |
| Evaporators: | 3003 coiled strip clad two sides with 4343 as dimpled "plates" for controlled atmosphere brazing. |
| Bar & plate external oil coolers: | 3003 bare fin stock. Clad parting sheet typically in 3003 clad two sides with either 4004 or 4104 for vacuum brazing. |
| Radiators: | 3003 bare fin stock or clad two sides with 4343. Header and side support stock clad one or two sides with either 4045 of 4343 for controlled atmosphere brazing. |
| Preforms: | 4045 or 4047 coiled brazing shim stock for washers, rings or wire applications. |
| Braze Sheet Items | No of Sides Clad | Core Alloy | Cladding Alloy | Nominal Cladding Thickness Per Side (Percent of Composite Thickness) | Optimal Brazing Range ºF / ºC |
| #7 | 1 | 3003 | 4004 | 15% for .024" and less 10% for .025" to .062" 7.5% for .063 and greater |
1090-1120/588-604 |
| #8 | 2 | 3003 | 4004 | 15% for .024" and less 10% for .025" to .062" 7.5% for .063 and greater |
1090-1120/588-604 |
| #13 | 1 | 6951 | 4004 | 15% for .024" and less 10% for .025" to .062" 7.5% for .063 and greater |
1080-1110/582-599 |
| #14 | 2 | 6951 | 4004 | 15% for .024" and less 10% for .025" to .062" 7.5% for .063 and greater |
1080-1110/582-599 |
* Also available with 4104 cladding, a modified 4004 with bismuth adder for increased braze flow.
Fin Stock
3003 is commonly used for fin applications. We stock a wide range of gauges and tempers from .003 to .012. We can custom slit material to a width tolerance of (+/- .002) with tight coils. You can have the exact size and quantity you want usually within 3-5 working days.
Custom Alloy Combinations
Bar and plate coolers typically utilize 3003 extrusions. Lynch Metals is a major supplier of this product not only in long lengths, but also as cut-to-size and deburred pieces. We also have the capability to supply just about any other type of extrusion regardless of alloy or circle size.
MULTICLAD™ Stock Items
| Multiclad | .016" x 36" x 72" |
| Multiclad | .020" x 36" x 72" |
| Multiclad | .032" x 36" x 72" |
| Multiclad | .040" x 36" x 72" |
| Multiclad | .050" x 36" x 72" |
| Multiclad | 4000 Series Cladding 3003 Interlayer 6000 Series Core |
Fin Stock Items
Items can be stocked in flat sheets or wide coils ranging between 12.00" to 36.00". These coils can be precision slit to your specific width, therefore eliminating scrap and the cost of processing. Coil can be supplied on a 3" to 16" ID and can be specially packaged to prevent damage in transit. Stock material can be custom slit and delivered within one week. Gauges are available from .002" to .205".
| Stock | 6951 | 3003 | 1100 | 4047 | No. 12 |
| .003 | X | X | X | X | |
| .004 | X | X | X | X | |
| .005 | X | X | X | X | |
| .006 | X | X | X | X | X |
| .008 | X | X | X | X | X |
| .010 | X | X | X | X | X |
| .012 | X | X | X | X | X |
| .016 | X | X |