C22000 Commercial Bronze(brass) wire
C22000, commonly referred to as Commercial Bronze, is a copper-zinc alloy with a nominal composition of 90% copper and 10% zinc . Despite its name, it is technically classified as brass due to the zinc content but retains the historical designation "bronze"
Parameter
Chemical Composition
Mechanical Properties
Dimensional Range of C22000 Copper Wire

C22000 wire is available in a broad size spectrum, with manufacturers offering both standard and customized dimensions:

  • Diameter Range: 1.0 mm to 50 mm (commonly produced in 6 mm, 8 mm, 12 mm, and 15 mm diameters) .
  • Customization: Suppliers like Jiangsu Jiahua Metal Wire Co., Ltd. and Shandong Zhongxuan Steel Group Co., Ltd. provide tailored dimensions and processing services (e.g., bending, cutting) to meet specific industrial needs .


International Standards for C22000 Copper Wire

C22000 is governed by several key international standards, ensuring consistency in composition and performance:

StandardDesignationScope
ASTMC22000Defines alloy composition (90% Cu, 10% Zn) and mechanical properties .
ISOCuZn10Equivalent to C22000; specifies brass wire for general engineering .
BS (UK)CZ 101British Standard for brass wire with 89–91% Cu .
JIS (Japan)C2200Japanese Industrial Standards for brass wire applications .
ASTM B927/B927M-Covers brass rod, bar, and shapes (including C22000) .
DIN EN 12166CW501L (CuZn10)European standard for brass wire in electrical and decorative uses .



Detailed Chemical Composition of C22000 Copper Alloy

C22000, also known as Commercial Bronze or H90 brass, is a copper-zinc alloy with minor trace elements. Its chemical composition is standardized as follows (by weight percentage):

  • Copper (Cu): 89.0–91.0%
  • Zinc (Zn): Balance (approximately 9.0–11.0%)
  • Iron (Fe): ≤0.05%
  • Lead (Pb): ≤0.05%
  • Other impurities (total): ≤0.3%

This composition ensures a balance of ductility, corrosion resistance, and workability. Notably, the low iron and lead content minimizes brittleness and enhances cold-working properties


Mechanical Properties of C22000 Copper Alloy

The mechanical properties of C22000 vary significantly depending on its processing state (e.g., annealed, cold-worked). Below is a comprehensive breakdown:

1. Basic Mechanical Properties (Annealed State):

  • Tensile Strength (Ultimate): 200–260 MPa
  • Yield Strength (0.2% Offset): 69–150 MPa
  • Elongation (at Break): 15–45%
  • Shear Strength: 200–300 MPa
  • Hardness:
    • Brinell Hardness (HB): 70–200 HB
    • Rockwell B Hardness: 42–81 HRB
  • Elastic Modulus: 110–115 GPa
  • Poisson’s Ratio: 0.33

2. Enhanced Properties After Cold Working:

Cold deformation significantly improves strength and hardness:

  • Tensile Strength: Up to 520 MPa
  • Yield Strength: Up to 500 MPa
  • Elongation: Reduced to 1.9–10% (depending on strain)
  • Hardness (Rockwell 30T): 47–73 HR30T

3. Compressive Strength:

  • Compressive Strength: >600 MPa (noted in specialized reports for high-load applications) .
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