ASTM B21 Naval Brass Rod
ASTM B21/B21M- Standard Specification for Naval Brass Rod, round Bar, and Shapes
This specification establishes the requirements for naval brass rod, brass solid bar, and shapes produced from Copper Alloy UNS Nos. C46200, C46400, C46750, C47940, C48200, C48500, C48640, or C48645.
Tempers available under this specification are M30 (as-hot extruded), O60 (soft annealed), O50 (light annealed), H60 (cold headed and formed), H02 (½ hard), and H04 (hard). Products shall be tested and shall adhere to dimensional (diameter, shape, length, straightness, and edge contour), mechanical (tensile and yield strength, Rockwell hardness, and elongation), and chemical composition requirements.
As a leading copper, naval brass, & bronze alloys supplier, Our success to serving our customers, through our service-minded employees and material readily available for prompt, accurate deliveries of copper, brass, bronze, stainless steel and other metal alloys.
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Naval Brass Bar is a key metal for use in numerous marine applications. The naval brass round rods have an exceptionally high corrosion-resistance in salt and fresh water environments.
In addition, naval brass round bars are extremely sturdy and tough, making this the greatest metal for situations where a tough metal is imperative, such as marine engineering or architectural structures.
| Hollow Rods | Min Bore Size 20 mm and Max OD 100 mm |
| Round Rods | 6mm To 130 mm |
| Hex | 5mm To 60mm |
| Square | 4mm To 60mm |
| Flat | 5mm Min Thickness and max Width 120mm |
| Profiles / Sections | AS per Customer Drawing |
| Billets | Up to 200 mm |
| Ingots | AS per Specification |
Provide customized services based on customer needs.
We provide the raw copper alloy materials in various standard shapes as well as custom cut copper alloys. The naval brass round bars in changjin are available in a selection of diameters; when you buy naval brass round rods from changjin, we will cut them to the size you require at no extra cost, to make sure your rods are suitable for your needs.
● Free Cutting
● Coating
● Custom Lengths
● Fast Turnaround
● Customized according to your special needs
We also provide forging blanks and CNC precision machining services for our clients, covering industries such as energy, petrochemicals, steel, engineering machinery, plastics, prevention and control, hydraulics, healthcare, and food. Please feel free to send us drawings for inquiries.
Metalworking Services
CNC Machining
Sheet Metal Fabrication
Metal Welding
Metal Cutting
Metal Bending
Metal Punching
Metal Forging
Metal Sheet Rolling
Tube and Plate Drilling
Heavy Forging Press Capacity
Our heavy-duty forging presses support open-die forging and deformation of large-section forgings, including discs, shafts, blocks, and custom components. This capability enables us to meet the demanding forming requirements of heavy industrial applications.
Heat Treatment Capability
Heat treatment is a critical step in achieving the mechanical properties required for heavy-duty forgings. Our process capabilities meet the strength, toughness, and structural stability requirements for forged components used under demanding operating conditions.
Heavy Shaft Machining
We offer machining capabilities for large forged shafts and long cylindrical components, supporting both rough and finish machining. This capacity is suitable for stepped shafts, rotor shafts, rollers, and other heavy-duty forged shaft components.
Ring Forging Machining
Our machining facilities are capable of handling large ring-shaped forgings and circular parts that require precise turning, face machining, boring, and contour control. This capability is suitable for industrial ring blanks, heavy-duty circular parts, and machined ring forgings.
Cylindrical Forging Machining
We offer machining solutions for heavy-duty cylindrical, hollow, and tubular forgings. This capability supports the machining of sleeves, cylinders, and other thick-walled forged components used in pressure vessels, rotating systems, and general industrial applications.
Inspection & Testing
Quality control is integrated into our production process through the inspection and testing of forged and machined parts. Our capabilities help verify the dimensional accuracy, condition, and quality consistency of industrial forgings prior to delivery.
Packing & Delivery
Finished forgings are properly protected and packaged to minimize the risk of damage during storage and transportation. Our packaging methods ensure the safe domestic delivery and export shipment of machined and high-value forged components.
