Wholesale C26000 Brass (CuZn30) – For Deep Drawing, Stamping & Forming Factory, Exporter

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Wholesale C26000 Brass (CuZn30) – For Deep Drawing, Stamping & Forming Factory, Exporter

C26000 is an engineering material that achieves a perfect balance of "excellent cold forming properties + good comprehensive mechanical properties + moderate cost". It is particularly suitable for manufacturing parts that require complex deep drawing, stretching, bending, cold heading and other forming processes. It is the preferred economical brass material in many industrial fields. When using it, it is necessary to pay special attention to its tendencies of dezincification corrosion and stress corrosion cracking in specific environments, and to avoid risks by conducting appropriate heat treatment and selecting anti-dezincification grades.

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Product Description

Product Introduction

C26000 brass is one of the most widely used grades in copper-zinc binary alloys. It is also an α single-phase brass with approximately 70% copper and 30% zinc content. Its core feature lies in its excellent cold working performance and good strength, and it is hailed as the most ductile brass among copper alloys. In the family of copper alloys, C26000 belongs to a universal and cost-effective material.

Chemical Composition

Element	Content (%)
Copper (Cu)	68.5 - 71.5
Zinc (Zn)	Rem (approximately 28.5 - 31.5)
Lead (Pb)	≤ 0.07
Iron (Fe)	≤ 0.05
Impurities	≤ 0.15

Physical Properties

Project	Values
Density	8.53 - 8.60 g/cm³
Elastic modulus	Approximately 110 GPa
Thermal conductivity	115 – 130 (at 20°C) W/(m·K)
Melting point range	915 – 932°C
Electrical Conductivity	28 – 32% IACS (annealed state)

Key Features

Excellent cold working performance

C26000 exhibits extremely high ductility and toughness, making it ideal for severe plastic deformation processes such as deep drawing, stretching, bending, and cold heading. This is the fundamental reason why it was selected as the material for bullet casings.

Good balance of strength and plasticity

It is soft and easy to shape in the annealed state, and its strength can be increased by more than double after cold processing, while still retaining a certain degree of plasticity.

Good electrical and thermal conductivity

The conductivity is approximately 28% of pure copper, which is a relatively high level among copper alloys. It is suitable for parts that require both electrical conductivity and shape.

Good resistance to general corrosion

It performs well in air, fresh water, steam, and non-oxidizing acid solutions.

Frequently Asked Questions (FAQ)

What is C26000 brass?

C26000 brass, also known as cartridge brass or 70/30 brass, is a copper-zinc binary alloy containing approximately 70% copper and 30% zinc. It is highly valued for having the highest ductility among all brasses.

What makes C26000 brass ideal for cold working?

Due to its optimal copper-to-zinc ratio, C26000 possesses an alpha single-phase structure, which gives it exceptional ductility and toughness. This allows it to undergo severe deformation processes like deep drawing, bending, and spinning without cracking.

How does C26000 brass perform electrically and thermally?

C26000 brass has an electrical conductivity of approximately 28% to 32% IACS in its annealed state and a thermal conductivity of 115 to 130 W/(m·K) at 20°C, making it highly suitable for electrical connectors and heat-exchanging components.

Is C26000 brass corrosion resistant?

Yes, C26000 brass offers excellent resistance to general corrosion in environments such as clean atmosphere, fresh water, steam, and non-oxidizing acid solutions.

Can the strength of C26000 brass be increased?

Yes. While C26000 is soft and highly formable in its annealed state, its strength can be increased by more than double through cold working processes (work hardening) while still maintaining reasonable plasticity.