C22000 Bronze

Grade Name

UNS Number: C22000
Common Name: Commercial Bronze (90% Cu, 10% Zn)
Corresponding Standards: ASTM B36/B36M (Brass Sheet/Strip), ASTM B134 (Brass Wire).

Bronze UNS C22000 Product Features

High Corrosion Resistance: Suitable for atmospheric and mild chemical environments.
Excellent Formability: Ideal for cold working and machining.
Aesthetic Appeal: Golden-yellow surface finish for decorative applications.
Good Electrical Conductivity: ≈40% IACS, suitable for non-critical electrical components.
Cost-Effective: Balanced performance for general industrial use.

Common Product Forms & Dimensions

Form	Thickness (mm)	Width (mm)	Length (mm)	Diameter (mm)
Sheet/Strip	0.2 – 6.0	50 – 500	Custom	-
Rod/Bar	-	-	Custom	3 – 50
Wire	-	-	Custom	0.3 – 12
Tube	1 – 15 (wall)	-	Custom	10 – 150 (OD)
Note: Custom dimensions are available based on requirements .

Chemical Composition

Element	Cu	Zn	Pb	Fe	Others
Weight %	89–91	Balance	≤0.05	≤0.05	≤0.1
Data per ASTM B36 and typical industrial specifications .

Physical Properties

Property	Value
Density (g/cm³)	8.80–8.86
Melting Point (°C)	950–980
Electrical Conductivity (%IACS)	35–40 (Annealed)
Thermal Conductivity (W/m·K)	120–140 (at 20°C)
Values vary with processing conditions.

Mechanical Properties

Condition	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Hardness (HV)
Annealed	200–270	60–100	35–50	45–65
Cold Worked (H02)	300–370	250–300	15–25	70–90
Cold Worked (H04)	380–450	340–400	5–15	100–120
Data covers varying thicknesses and processing states .

Core Advantages

1. Decorative Versatility: Golden-yellow finish ideal for architectural and artistic applications.

2. Ease of Fabrication: Supports stamping, bending, and machining with minimal tool wear.

3. Balanced Performance: Combines moderate strength, ductility, and corrosion resistance.

Product Applications

Architecture: Decorative trims, door handles, and roofing components.
Electrical: Low-current connectors, terminal blocks, and switch components.
Plumbing: Valve components, fittings, and decorative fixtures.
Industrial: Fasteners, bushings, and stamped parts .

Processing Considerations

Annealing: 400–550°C to restore ductility after cold working.
Machining: Use sharp tools and lubricants to avoid galling.
Welding: Compatible with TIG and resistance welding; avoid excessive heat input.
Surface Finishing: Polishing or lacquering recommended for decorative uses.

Key Application Scenarios

Historical restoration projects requiring period-accurate materials.
Consumer electronics with aesthetic design requirements.
Marine hardware in non-saltwater environments.

FAQs

Q1: Can C22000 withstand saltwater exposure?

A: Limited resistance; not recommended for prolonged marine use without protective coatings.

Q2: How does C22000 compare to C21000 brass?

A: C22000 has lower copper content (90% vs. 94–96%), reducing cost but slightly lowering corrosion resistance.

Q3: Is C22000 recyclable?

A: Yes, it is fully recyclable, aligning with sustainability goals.

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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