C903 Alloy Casting

alloy-casting-foundryC903 is a tin bronze or Navy “G” bronze alloy with good mechanical and corrosion resistance plus the added benefit of high wear resistance. The C903 alloy is comprised of 86-89% copper, 3-5% zinc, and 7.5-9% tin. C903 is commonly used to make many parts, including marine castings, bearings, bushings, pump components, valve components, gears, and steam fittings.

At Patriot Foundry & Castings, we produce high-quality sand castings using a wide assortment of materials, including the C903 alloy. Our state-of-the-art nonferrous foundry can handle jobs from one to thousands of pieces, and C903 castings from less than an ounce to 232 pounds. Aside from alloy casting, we also offer many value-added services, including pattern design/production, heat treating, annealing, machining, powder coating, painting, anodizing and assembling for completely finished parts.

We’re proud to be ISO 9001:2008 certified (Certificate No.: 11-2168). Our DUNS number is 826918117, and our CAGE Code is 54J41.

C903 Properties

Density Ultimate Tensile Strength Elastic Modulus Melting Onset
550 lb/ft3 48 x 103 psi 16 x 106 psi 2100 °F

Learn More About Our C903 Alloy Casting Services!

For a free initial C903 alloy castings consultation, call us today at (603) 934-3919 or contact us online. We’re based in New Hampshire, but provide services throughout New England, Greater Boston, Massachusetts (MA), Vermont (VT), Rhode Island (RI), Connecticut (CT), Maine (ME), New York (NY), New Jersey (NJ), Pennsylvania (PA), Delaware (DE), Maryland (MD), Virginia (VA) and all of the U.S.