What is C21000 Brass Bar?
Different Material Names for C21000 Brass Bar: GB- H96, ISO- CuZn41, ASTM- C21000, JIS- C2100, BS-Z125, DIN- CuZn5.
C21000 Brass Bar is with good performances in mechanical properties and machinability in hot pressure and cold pressure processing. C21000 is widely used in the applications of structural parts as bushings, gaskets, etc. Besides, Tin brass materials has high corrosion resistance and are widely used as raw materials for corrosion resistant parts of ship, vapor, oil's industrial fields.
When production for C21000 Brass Bar, the available sizes are: Thickness- 0.05mm to 60mm; Width- Up to 3000mm; Length- Up to 6000mm.
Chemical Composition for C21000 Brass Bar:
|
Grade |
Cu |
Pb |
Fe |
Ni |
Zn |
Others |
|
H96 |
95.0-97.0 |
0.03 |
0.1 |
0.5 |
Rest |
0.2 |
Equivalent Grades in Different Standards for Brass Bar:
|
GB |
ISO |
ASTM |
JIS |
BS |
DIN |
|
H59 |
CuZn41 |
C28000 |
C2800 |
CZ109 |
CuZn39 |
|
H62 |
CuZn38 |
C27400 |
C2740 |
-- |
CuZn40 |
|
H65 |
CuZn35 |
C26800 |
C2680 |
CZ107 |
CuZn36 |
|
H68 |
CuZn32 |
C26000 |
C2600 |
-- |
CuZn33 |
|
H70 |
CuZn30 |
C26000 |
C2600 |
CZ106 |
CuZn30 |
|
H80 |
CuZn20 |
C24000 |
C2400 |
CZ103 |
CuZn20 |
|
H85 |
CuZn15 |
C23000 |
C2300 |
CZ102 |
CuZn15 |
|
H90 |
-- |
C22000 |
C2200 |
CZ101 |
CuZn10 |
|
H96 |
CuZn41 |
C21000 |
C2100 |
CZ125 |
CuZn5 |
C21000 vs. C26000 (Cartridge Brass)
| Property | C21000 (Gilding Metal) | C26000 (Cartridge Brass) | Key Difference |
|---|---|---|---|
| Composition | ~95% Cu, ~5% Zn | ~70% Cu, ~30% Zn | C21000 has significantly higher copper content. |
| Color | Rich, warm red-gold | Bright yellow | C21000 has a more reddish, "precious" metal appearance. |
| Mechanical | Lower strength, excellent ductility | Higher strength and hardness, work-hardenable | C26000 is stronger; C21000 is more formable. |
| Conductivity | Higher (electrical & thermal) | Lower | C21000 is better for electrical/thermal applications. |
| Corrosion Resistance | Good, but can dezincify in harsh environments | Good, but more prone to dezincification than C21000 | C21000 generally has slightly better corrosion resistance. |
| Primary Uses | Jewelry, architectural trim, decorative items, electrical contacts | Cartridge cases, automotive parts, fasteners, springs, general hardware | C21000 for aesthetics/formability; C26000 for strength/cost. |
| Cost | Higher (due to high copper content) | Lower | C26000 is more cost-effective for high-volume parts. |
How to Choose:
Choose C21000 when you need: Superior formability (deep drawing, intricate shaping), a distinctive warm golden color for decorative purposes, or better electrical/thermal conductivity.
Choose C26000 when you need: Higher strength and hardness, good machinability for mechanical parts, or a lower-cost solution for high-volume production where the bright yellow color is acceptable.
FAQ
| Q: Where can I buy C21000 brass sheet or strip? A: C21000 products are supplied by specialized metal distributors, mills, and online metal suppliers. Ensure the supplier provides certified Mill Test Reports (MTR) for quality assurance. |
| Q: Does C21000 contain lead? A: Standard C21000 is typically lead-free. However, always verify with the supplier's material certification to ensure compliance with regulations like RoHS or NSF for specific applications. |
| Q: What tempers or forms is C21000 available in? A: C21000 is commonly supplied in annealed (soft), half-hard, and hard tempers. Available forms include sheet, strip, foil, wire, tube, and occasionally rod. |
| Q: Can C21000 be polished or plated? A: Yes, C21000 takes well to mechanical polishing, buffing, and electroplating (e.g., nickel, gold, or chrome) for enhanced appearance and durability. |
| Q: Is C21000 suitable for marine applications? A: C21000 is not ideal for direct seawater exposure due to potential dezincification. For marine environments, alloys like C46400 (naval brass) or copper-nickel alloys are preferred. |
| Q: What are the thermal conductivity and electrical conductivity of C21000? A: C21000 has about 80–85% IACS electrical conductivity and thermal conductivity around 100–120 W/(m·K), making it suitable for certain electrical and heat exchange applications. |
| Q: How does C21000 compare to pure copper in conductivity? A: C21000 has lower electrical and thermal conductivity than pure copper (C11000, ~101% IACS) due to its zinc content, but it offers better strength and formability. |
Our factory
Our supply scope covers a comprehensive range of high-performance copper and copper alloy products tailored to diverse industrial applications. We provide precision-engineered copper tubes for HVAC and refrigeration systems, sheets and plates for architectural cladding and electrical components, rods and bars for machining and fabrication, wires for conductive and mechanical purposes, as well as strips and foils for electronic and automotive industries. All products are available in various alloys - including pure copper, brass, bronze, phosphor bronze, copper-nickel, and specialty alloys - and can be supplied in standard sizes or customized dimensions, tempers, and finishes to meet your exact specifications.
