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Copper Sheet (Plate):
- Thickness:
- General range: 0.20 mm to 15.0 mm (customizable up to 10.0 mm per ASTM/EN standards) .
- Common standardized thicknesses:
- EN 1652 (CuZn10/CW501L): 0.55 mm, 0.60 mm, 0.70 mm, 0.80 mm (semi-hard/hard temper) .
- ASTM B36/B36M: 0.5 mm to 12.7 mm (0.02–0.5 in) .
- Width: Up to 1,000 mm (EN 1652) or 1,200 mm (custom orders) .
- Length: Typically 2,000 mm (EN 1652) or customized .
Copper Strip:
- Thickness:
- General range: 0.01 mm to 3.0 mm .
- Standardized thicknesses:
- GB/T 2059-2017: >0.15 mm to <0.50 mm (thin strip); 0.50 mm–3.0 mm (thick strip) .
- ASTM B152/B152M: 0.05 mm–12.7 mm (varies by temper and application) .
Width:
- ≤610 mm (for thickness <0.50 mm) or ≤1,200 mm (for thickness ≥0.50 mm) .
Custom orders: 20 mm–1,250 mm (e.g., connector strips) .
International Standards
C22000 is recognized under multiple global standards for sheet/strip production:
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
- Brinell Hardness (HB): 70–200 HB
- 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) .
C22000 copper plate/strip production process and product advantages:
1. Production process
Melting and casting link
Use submerged horizontal continuous casting technology to reduce the cooling of molten metal and smoke emissions, and at the same time improve the yield rate through micro rare earth element smelting technology.
Some companies use continuous extrusion method to generate billets from Φ20 copper rods through heating deformation and circulating water cooling, which has the characteristics of energy saving and high material utilization.
Rolling and annealing
The hot rolling process adopts large ingot rolling and thickness closed-loop control technology to increase rolling speed and reduce energy consumption.
The cold rolling process combines AGC closed-loop thickness control and roller technology, combined with multiple annealing (such as U-shaped furnace annealing, air cushion furnace annealing) and surface cleaning to ensure the surface quality and mechanical properties of the material.
The production of copper strips mostly adopts horizontal continuous casting-cold rolling billet opening process to adapt to its alloy characteristics.
Finishing and surface treatment
The consistency of finished products is improved through stretch bending straightening, degreasing passivation treatment, mechanized packaging and other technologies.
Some high-end products use low-temperature, low-tension annealing and online degreasing technology to further reduce energy consumption and pollution.
2. Product advantages
Performance advantages
High conductivity: C22000 copper has excellent electrical and thermal conductivity, and is suitable for scenes that require efficient heat transfer, such as radiators and pipes.
Good processing performance: Excellent plasticity, can be processed hot and cold (such as deep drawing and bending), suitable for manufacturing parts with complex shapes.
Environmental protection: Meets lead-free environmental protection requirements and meets the requirements of electronics, food and other industries for material safety.
Wide application scenarios
Used in the manufacture of heat exchangers, water supply and drainage pipes, electronic parts, etc., especially in the fields of new energy vehicles and 5G communications, demand has increased significantly.
Flexible spot supply, support for customized specifications (such as ultra-narrow strips, special-shaped materials), to meet different industrial needs.
Production technology innovation
Adopting two-stage continuous production and high hydrogen atmosphere annealing and other technologies, the yield rate is increased by 5%-10%, and the unit energy consumption is reduced.
Through surface passivation process and wide-width rolling technology, corrosion resistance is enhanced and the product size range is expanded.
Q1:Do you provide samples? Is it free or extra?
A1:Yes, we can provide samples free of charge and the customer will pay the freight.
Q2:What if I don't have export experience ?
A2:We have reliable forwarder agent which can ship items to you by sea/air/Express to your doorstep. Any way, we will help you choose the most suitable shipping service.
Q3:How long is your lead time?
A3:If it is in stock, it is usually 5-10 days. Or, if there is no inventory, 15 days, depending on the quantity.
Q4:What are your terms of payment?
A4:30% T/T deposit in advance, 70% T/T balance within 5 days after B/L copy, 100%.Irrevocable L/C at sight, 100% Irrevocable L/C after receive B/L 30-120 days, O/A.
Q5:How is your technical support?
A5:We provide lifetime online support through Whatsapp/ Skype/ Wechat/ Email. Any problem after delivery, we will offer you call anytime.
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