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Alloy 220 Commercial Bronze

Sequoia Brass & Copper sells alloy 220 commercial bronze. 220 Commercial bronze is made up of 90% copper and 10% zinc and is actually brass. It has a rich bronze color and was coined commercial bronze for such a long time that the term stays to this day. 220 commercial bronze has excellent formability, corrosion resistance, and functional strength.


Alloy 220 (Commercial Bronze) are ideal for decorative products, jewelry, medals, medallions, hardware, thermostats, and lighting fixtures, as well as for cable wrap shielding and marine hardware. It is also excellent for outdoor service such as lighting fixtures, weather stripping, kick and push plates.

  • Chemical Composition
  • Fabrication Properties
  • Casting Characteristics
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  Cu Fe Pb Zn
Min/Max 89.0 0 - 91.0 0.05 0.05 Rem.
Nominal 90 10
Joining Technique Suitability
Soldering Excellent
Brazing Excellent
Oxyacetylene Welding Good
Gas Shielded Arc Welding Good
Coated Metal Arc Welding Not Recommended
Spot Weld Not Recommended
Seam Weld Not Recommended
Butt Weld Good
Capacity for Being Cold Worked Excellent
Capacity for Being Hot Formed Good
Machinability Rating: 20
 
Product Forms
Plate
Sheet
Strip
Rod
Tube
Wire
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Common Fabrication Processes For
220 Commercial Bronze

Blanking, coining, drawing, etching, forming and bending, heading and upsetting, hot forging and pressing, piercing and punching, roll threading and knurling, shearing, spinning, squeezing and swaging, stamping

Typical Uses

Architecture
Weather stripping, screen cloth, ornamental trim, etching bronze, grill work
Builders Hardware
Kick plates, hardware
Consumer
Housing for lipstick compacts, compacts, costume jewelry, caskets, lipstick cases, ball point pens, chain links
Electrical
Wave guides, rotor bar - AC motors, cable wrap
Fasteners
Screw shells, bolts, line clamps, rivets, screws
Industrial
Base for vitreous enamel, escutcheons, flexible tube, studs, screen wire
Marine Hardware
Marine hardware
Ordnance
Small arms cartridges, artillery projectile rotating bands, press fit, primer caps, rotating bands
Plumbing
Plumbers' brass goods