Composition and Basic Characteristics of H96 Brass
Chemical Composition
H96 brass primarily consists of approximately 96% copper (Cu) and about 4% zinc (Zn). This high copper content endows H96 brass with excellent electrical and thermal conductivity while retaining the superior mechanical properties and corrosion resistance typical of brass alloys.
Physical Properties
Density: 8.5 g/cm³
Melting Point: 1083°C
Electrical Conductivity: 57% IACS (International Annealed Copper Standard)
Thermal Conductivity: 320 W/m·K
Torsional Performance of H96 Brass
Torsional Strength
Torsional strength is a key indicator of H96 brass's ability to resist deformation under twisting forces. Experimental data show that the torsional strength of H96 brass generally falls within the range of 200–250 MPa. This makes it highly suitable for applications requiring strong torsional resistance, such as in connectors and fasteners.
Torsional Modulus
The torsional modulus reflects the material's ability to undergo elastic deformation under torsional stress. H96 brass has a torsional modulus of approximately 40 GPa, meaning it can maintain elastic deformation over a wide range of torsional stresses, thereby enhancing its reliability under dynamic loads.
Torsional Ductility
H96 brass exhibits excellent torsional ductility, allowing it to withstand large angles of twist without fracturing. Experimental data indicate that H96 brass can achieve failure angles of over 45 degrees in torsional tests, making it particularly advantageous for applications involving repeated twisting.
Hardness of H96 Brass
Brinell Hardness
Brinell hardness is an important metric for evaluating the hardness of metallic materials. Tests on H96 brass reveal Brinell hardness values typically ranging from 80 to 120 HB. This hardness level ensures that H96 brass retains sufficient wear resistance while maintaining good machinability.
Rockwell Hardness
Rockwell hardness testing is another commonly used method for assessing hardness. H96 brass typically exhibits Rockwell hardness values between 50 and 70 HRB. This indicates that H96 brass not only has moderate hardness but also good toughness, making it suitable for manufacturing components that require both wear resistance and durability.
Vickers Hardness
Vickers hardness testing provides more precise hardness measurements. Tests on H96 brass show hardness values of approximately 100–140 HV. This range demonstrates the material's excellent uniformity and stability at the microstructural level, making it suitable for high-precision machining applications.
Application Areas
Electronic Components: The high electrical conductivity and moderate hardness of H96 brass make it an ideal material for manufacturing electrical connectors and switches.
Mechanical Parts: Its excellent mechanical properties and corrosion resistance make H96 brass suitable for producing gears, bushings, nuts, and other mechanical components.
Decorative Materials: The appealing appearance and ease of processing make H96 brass a popular choice for manufacturing decorative items and artworks.
Shipbuilding Industry: In marine environments, the corrosion resistance of H96 brass is particularly prominent, making it widely used in shipbuilding applications.
FAQ
| Q: What exactly is H96 material? A: H96 is a copper-zinc alloy (brass) with a nominal composition of 96% copper and 4% zinc. It is known as Gilding Metal 96% or by its UNS number C21000. It is the brass grade with the highest copper content and lowest zinc content. |
| Q: What are the key properties of H96 (C21000) brass? A: Its key properties are: Excellent thermal and electrical conductivity (the highest among common brasses). Very good corrosion resistance (close to pure copper). Good ductility and formability for both cold and hot working. Characteristic reddish-gold color, making it aesthetically pleasing. |
| Q: How does H96 differ from pure copper (like T2/C11000)? A: While very close to pure copper, the small addition of zinc (4%) in H96 provides slightly higher strength, hardness, and wear resistance than pure copper, while retaining most of its conductivity and corrosion resistance. It is often a more cost-effective and durable alternative for many applications. |
| Q: What are the most common applications for H96 brass? A: Common applications include: Waveguides, heat exchanger/condenser tubes, heat sinks, electrical conductivity springs, jewelry, medals, commemorative coins, decorative architectural trim, and nameplates. |
| Q: Can H96 brass be welded or soldered? A: Yes, it has excellent solderability and brazability. However, welding can be challenging due to its high thermal conductivity and zinc content, which can lead to porosity and zinc fume. Specialized techniques (like TIG welding with proper filler metal) are required. |
| Q: What are the main standards that cover H96/C21000? A: It is covered by various international standards: China: GB/T 5231 (H96) USA: ASTM B36 (C21000 for sheet/plate/strip), ASTM B134 (C21000 for wire) Europe: EN CW500L (similar composition) Japan: JIS C2100 |
| Q: Is H96 brass resistant to dezincification? A: Yes, it has very high resistance to dezincification due to its high copper content (above 85%). This makes it suitable for use in certain aqueous environments where lower-copper brasses (like H70, H62) would be susceptible. |
| Q: What is the typical form and size range for H96 products? A: It is commonly supplied as strip/coil, sheet/plate, wire, and tube. Typical dimensions include: Strip/Coil: Thickness 0.1mm - 3.0mm, Width up to 600mm. Wire: Diameter 0.5mm - 12.0mm. Tube: Outer Diameter (OD) 3mm - 50mm. |
Our product range
Our factory is a professional manufacturer of copper and copper alloy products, specializing in the export of high-quality copper materials. We possess modern production facilities and a strict quality control system, employing advanced production processes and technologies from raw material smelting to final product forming. The factory is equipped with precision extrusion, drawing, rolling, and heat treatment equipment, enabling the production of various specifications of copper pipes, copper plates, copper strips, copper rods, copper wires, and special profiles. We particularly excel in producing standard-grade brass products such as H96, H90, and H62, while also customizing chemical compositions, dimensional specifications, and surface treatments based on customer requirements. Certified with the ISO 9001 quality management system, our products comply with international standards such as ASTM, EN, JIS, and GB. They are widely used in construction, electronics, machinery, automotive, and other industries and are exported to over 50 countries and regions worldwide. We are committed to providing high-quality products and professional services, making us your reliable copper material partner.
Copper product packaging
We adopt professional, safe, and environmentally compliant international standard packaging solutions. All products are custom-packaged according to their form and transportation requirements: pipes are reinforced with moisture-proof woven bags or wooden crates, with protective sleeves added to the ends; plates and strips are wrapped in anti-rust paper and placed in dry wooden crates or on pallets, with special protection for the edges; wires and rods are wrapped in waterproof film and secured on pallets or bundled wooden crates. All packaging includes clear labels detailing product specifications, grades, batch numbers, and shipping marks. Additionally, moisture-proof and anti-rust treatments are applied to withstand long-distance sea transport or special climate conditions, ensuring that the goods remain intact during transportation and storage. Our packaging meets the import standards of various countries.
