C2200 Copper

Grade Name

C2200 Copper Alloy (Low-Zinc Brass)

Key Features

• Balanced Performance: Moderate strength with excellent thermal/electrical conductivity.

• Machinability: Suitable for cold/hot working, welding, and complex shaping.

• Corrosion Resistance: Stable in atmospheric and freshwater environments.

• Eco-Friendly: RoHS-compliant, Pb ≤0.05%.

Product Forms & Dimensions

Form	Size Range	Standards
Rod	Diameter 1–350mm, Length 0.5–30m	JIS H 3250-19927
Plate	Thickness 0.5–80mm, Width 650–2000mm	JIS H 3100-20184
Wire	Diameter 0.1–15mm, Coil ≥5kg	ASTM B367
Tube	OD 6–530mm, Wall Thickness 0.5–50mm	JIS H 3100-20184
Strip	Thickness 0.1–3mm, Width ≤305mm	JIS H 3250-19929

Chemical Composition

Element	Content (%)	Standard Range
Cu	89.0–91.0	Main Component
Zn	Balance	Balance
Pb	≤0.05	JIS H 3100-20184
Fe	≤0.05
Impurities	≤0.2

Physical Properties

Property	Value/Description
Density	8.8 g/cm³
Melting Point	950–1000℃
Electrical Conductivity	28% IACS
Thermal Conductivity	125 W/(m·K)
Thermal Expansion	19×10⁻⁶/℃ (20–300℃)

Mechanical Properties

Condition	Tensile Strength (MPa)	Elongation (%)	Hardness (HRB)
Annealed (O)	≥225	≥35	50 HRB
1/4 Hard	255–335	≥25	70 HRB
Hard (H)	≥335	–	85 HRB

Core Advantages

• Cost-Effective: Lower processing costs compared to pure copper.

• Versatility: Adaptable to stamping, CNC, and welding.

• Certifications: Meets RoHS and international standards.

Applications

• Machinery: Gears, valves, and bearings.

• Electronics: Connectors and relays.

• Architecture: Door handles, decorative strips.

• Automotive: Radiator components and valves.

• Art & Daily Use: Medals, zippers, and metal mesh.

Processing Guidelines

• Hot Working: 750–830℃, avoid brittleness at 200–700℃.

• Annealing: 520–650℃ to optimize properties.

• Cold Working: Control deformation to prevent cracks.

FAQs

Q1: Difference between C2200 and C2100?

A: C2200 has lower Cu (89–91% vs. 95–97% in C2100), higher Zn, offering higher strength but lower conductivity.

Q2: Anti-corrosion methods?

A: Avoid acidic environments, apply tin plating or protective coatings.

Standards

• JIS H 3100-2018: Sheets, plates, and strips.

• ASTM B36/B36M: Brass plates and strips.

• DIN 17660: European brass standards.