C26000 Brass

Grade Name

UNS Number: C26000
Common Name: Cartridge Brass (70% Cu, 30% Zn)
Corresponding Standards: ASTM B36/B36M (Brass Sheet/Strip), ASTM B134 (Brass Wire), SAE J463.

Product Features

Exceptional Cold Workability: Ideal for deep drawing, stamping, and forming.
High Strength-to-Ductility Ratio: Balances mechanical performance for structural applications.
Good Corrosion Resistance: Suitable for atmospheric and freshwater environments.
Excellent Machinability: Produces smooth finishes with minimal tool wear.
Cost-Effective: Widely used for mass-produced components.

Common Product Forms & Dimensions

Form	Thickness (mm)	Width (mm)	Length (mm)	Diameter (mm)
Sheet/Strip	0.2 – 6.0	50 – 600	Custom	-
Rod/Bar	-	-	Custom	3 – 50
Wire	-	-	Custom	0.3 – 12
Tube	1 – 12 (wall)	-	Custom	10 – 150 (OD)
Note: Custom dimensions are available upon request.

C26000 Chemical Composition

Element	Cu	Zn	Pb	Fe	Others
Weight %	68.5–71.5	Balance	≤0.07	≤0.05	≤0.15
Complies with ASTM B36 and SAE J463 standards.

C26000 Brass Material Properties

Physical Properties

Property	Value
Density (g/cm³)	8.53–8.60
Melting Point (°C)	915–932
Electrical Conductivity (%IACS)	28–32 (Annealed)
Thermal Conductivity (W/m·K)	115–130 (at 20°C)
Values may vary depending on processing conditions.

Mechanical Properties

Condition	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Hardness (HV)
Annealed	300–400	100–150	55–70	50–70
Cold Worked (H02)	450–550	350–420	15–25	100–130
Cold Worked (H04)	550–650	480–550	5–12	140–180
Data applies to standard thicknesses and processing states.

Core Advantages

1. Deep Drawing Capability: Preferred for intricate shapes like cartridge cases.

2. Versatile Performance: Combines high ductility with moderate strength.

3. Corrosion Resistance: Suitable for indoor and mild outdoor environments.

4. Economic Efficiency: Optimal for high-volume manufacturing.

Product Applications

Ammunition: Cartridge cases, bullet jackets.
Hardware: Fasteners, springs, and hinges.
Plumbing: Valve components, fittings.
Electrical: Connectors, terminals, and shielding.
Decorative: Architectural trim, jewelry, and decorative hardware.

Processing Considerations

Annealing: 425–600°C to restore ductility after cold working.
Machining: Use sharp tools with lubricants to prevent galling.
Welding: Compatible with TIG and resistance welding; avoid zinc fume generation.
Surface Treatment: Polishing, plating, or lacquering for enhanced aesthetics.

Key Application Scenarios

Defense and ammunition manufacturing.
Consumer electronics requiring precision-stamped parts.
Architectural installations in low-corrosion environments.
Automotive components like radiator cores and fuel systems.

FAQs

Q1: Why is C26000 called "Cartridge Brass"?

A: It was historically used for ammunition cartridge cases due to its excellent cold-forming properties.

Q2: How does C26000 compare to C27000 (Yellow Brass)?

A: C26000 has higher zinc content (30% vs. 33%), offering better ductility but slightly lower corrosion resistance.

Q3: Can C26000 be used in marine environments?

A: Limited to short-term exposure; protective coatings are recommended for saltwater applications.

Standard References

Standard	Description
ASTM B36/B36M	Specifications for brass sheet, strip, and rolled bar.
ASTM B134	Standard for brass wire.
SAE J463	Mechanical property standards for wrought copper alloys.

Note: Specifications may vary slightly depending on manufacturer and processing methods. Always consult technical datasheets for critical applications.

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