RBCuZn-A vs. RBCuZn-C:
What Is the Difference?
Why similar brass brazing rods carry different AWS classifications—and how to choose the right one.
When purchasing brass welding rods, customers often see RBCuZn-A, RBCuZn-C, Naval Bronze, Low-Fuming Bronze or HS221. These products may look similar, but they are not necessarily the same alloy.
RBCuZn-A and RBCuZn-C both belong to the copper-zinc brazing filler-metal family. The final letter identifies a specific chemical-composition range, not simply a different supplier name.
|
Item |
RBCuZn-A |
RBCuZn-C |
|
Common name |
Naval Bronze |
Low-Fuming Bronze |
|
Alloy system |
Copper-Zinc-Tin |
Copper-Zinc-Tin with controlled Fe, Mn and Si |
|
Typical UNS |
C47000 |
C68100 |
|
Main feature |
Good fluidity and corrosion resistance |
Lower melting range and reduced zinc fuming |
|
Common uses |
Brass, bronze, copper, steel and cast iron |
Steel, cast iron, copper alloys and general repair |
Terminology varies between countries and suppliers. A yellow copper-zinc rod may be marketed as a brass welding rod, bronze rod, gas brazing rod or HS221. These commercial names describe the product family, but they do not prove its AWS classification.
Appearance alone cannot distinguish RBCuZn-A from RBCuZn-C. The correct grade should be confirmed through chemical composition and a material certificate.
Not automatically. Their working temperature, fuming behavior, fluidity and joint performance may differ. If a drawing or purchase order specifies one AWS grade, the supplied material should match that classification.
Tongling Xinxin Welding Materials Co., Ltd. specializes in copper-based brazing materials for distributors and industrial users worldwide. Our product range includes:
· RBCuZn-A and RBCuZn-C brass brazing rods
· HS221-type and Low-Fuming Bronze bare rods
· Flux-coated brass brazing rods and matching brazing flux
· Customized sizes, packaging, logos and private-label production
Common diameters include 1.6, 2.0, 2.5 and 3.0 mm, with a standard length of 1,000 mm. Other specifications can be customized.
Confirm the required standard, chemical composition, base metal, brazing process and whether a bare or flux-coated rod is needed. If you are unsure, send XINXIN your current product label, composition or sample for comparison.
TONGLING XINXIN WELDING MATERIALS CO., LTD.
XINXIN WELDING | www.superlionwelding.com
Tel : +86 13705623213
Email : Jasmine@xxhccn.com
Wechat : +8613705623213
Whatsapp : +8613705623213
Address : 4077 Qifeng Road, Tongling, Anhui, China
