What is H96 brass?
C21000 (H96) brass is the most common corrosion-resistant copper alloy. C21000 possesses excellent corrosion resistance, good deep-drawing properties, ductility, moderate electrical conductivity, and good strength. Typical applications of C21000 include ammunition components, coins, medals, and a wide variety of other applications. C21000 is a copper-zinc alloy that is stronger and more durable than pure copper alloys. C21000 is a highly corrosion-resistant, ductile, and electrically conductive metal widely used in industrial and electrical sectors.
H96 brass Chemical Composition
|
Cu |
Pb |
Zn |
Fe |
Total Impurity |
|
95.0~97.0 |
≤0.03 |
REM |
≤0.1 |
≤0.2 |
H96 brass Physical Properties
|
Grade |
Tensile Strength (N/mm) |
Elongation (%) |
Hardness (HV) |
||||||||
|
Soft |
1/2H |
H |
Soft |
1/2H |
H |
Soft |
1/4H |
1/2H |
3/4H |
H |
|
|
C2100 |
≥205 |
270-345 |
≥280 |
≥33 |
≥18 |
- |
≤65 |
65~80 |
80-100 |
- |
≥100 |
Key Features
1. Excellent electrical and thermal conductivity (comparable to pure copper, electrical conductivity ≥ 90% IACS)
2. Outstanding corrosion resistance (resistant to atmospheric and seawater corrosion, and dezincification)
3. Good plasticity (suitable for complex molding)
4. Relatively low strength (tensile strength ≥ 250 MPa)
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| 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. |
| Q: What is the temper (hardness state) available for H96 strip? A: It is commonly available in soft (O), quarter-hard (H01), half-hard (H02), and hard (H04) tempers to suit different forming requirements. |
| Q: How does the price of H96 compare to other brasses and copper? A: Due to its high copper content, its price is higher than common brasses like H62 and H68, but generally lower than pure copper and premium alloys like phosphor bronze. It offers a good balance of performance and cost. |
| Q: What are the main surface finishes available for H96/C21000 brass? A: Standard finishes for H96/C21000 brass include mill finish (matte), polished, and various coated finishes (such as clear lacquer or passivation) to prevent tarnishing, especially for decorative uses. |
| Q: Is H96 suitable for making springs? A: Yes, its good combination of conductivity, corrosion resistance, and spring properties (in hardened tempers) makes H96/C21000 a preferred material for certain electrical conductivity springs and contacts. |
| Q: How does H96 perform in terms of machinability? A: Its machinability rating is relatively low (around 20% on the free-cutting brass C36000=100% scale). It is gummy and tends to adhere to cutting tools. It is not typically chosen for high-volume machining operations. |
| Q: Are H96 from China and C21000 from the USA exactly the same? A: They are equivalent grades with nearly identical nominal compositions. Minor differences may exist in permissible impurity levels between the GB (Chinese) and ASTM (U.S.) standards. For most applications, they are considered interchangeable, but critical applications should verify the exact specification requirements. |
| Q: Can H96/C21000 brass be used for marine applications? A: With its high corrosion and dezincification resistance, H96/C21000 brass can be used in certain low-corrosion marine environments (e.g., interior components, decorative fittings). However, for critical seawater applications, more specialized alloys like aluminum brass or copper-nickel are recommended over H96 brass. |
Our product range
| Category | Other Key Grades (Extensive Range) | Product Forms | Typical Size Range |
|---|---|---|---|
| Pure Copper | T2 (C11000/C10100), TU1/TU2 (Oxygen-Free), T3 (C11000), C10100, C10200 (OF), C10300, C10400, C10500, C10700, C10800, C11000, C11300, C11400, C11500, C11600, C12000, C12200 | Pipe/Tube, Plate/Sheet, Coil/Strip, Wire/Rod, Busbar | Pipe/Tube: OD 3mm - 400mm, WT 0.5mm - 15mm Sheet/Plate/Coil: Thk 0.1mm - 50mm, Width ≤ 1250mm Wire/Rod: Dia. 0.5mm - 80mm |
| Phosphorus Deoxidized Copper | TP2 (C12200), C1201, C1220, C12200, C14200 | Pipe/Tube, Plate/Sheet, Coil/Strip | Pipe/Tube: OD 4mm - 300mm, WT 0.5mm - 10mm Sheet/Plate/Coil: Thk 0.2mm - 30mm, Width ≤ 1000mm |
| Brass | H96, H68, H65, H70, HPb59-1 (C3771), CW505L (C12200), C2600 (Cartridge Brass), C2680, C2720, C28000, C36000 (Free-Cutting), C38500 | Coil/Strip, Plate/Sheet, Rod/Bar, Wire | Strip/Sheet/Coil: Thk 0.05mm - 10.0mm, Width ≤ 650mm Rod/Bar: Dia. 3mm - 200mm Wire: Dia. 0.5mm - 12mm |
| Bronze & Other Alloys | Phosphor Bronze: C51000, C52100, C54400 Copper-Nickel: C71500, C71640 Aluminum Bronze: C60600, C63000 Beryllium Copper: C17200, C17500 Other: C19210, C19400 |
Strip/Coil, Plate, Rod/Bar, Wire, Pipe | Customizable per alloy and form. Strip/Coil: Thk 0.05mm - 5.0mm Rod/Bar: Dia. up to 150mm |
