UZ19A6 Aluminium Bronze - Copper Alloys

UZ19A6 Manganese Bronze (CuZn19Al6)

An Airbus specification for a high strength Manganese Bronze. The alloy produced in the wrought form is one of the strongest manganese bronzes on the market. It has good wear resistance and high compressive strength and is used for aircraft landing bushings and bearings. The alloy can also by manufactured to meet the requirements of AIR 9070 UZ19A6 , NCT 10-631-11 MD edition2, DIN 1709 and NF L 14-707.

About UZ19A6

UZ19A6 is a high-strength manganese bronze alloy developed for demanding engineering applications where exceptional load-bearing performance and wear resistance are critical. Commonly specified to aerospace standards, including Airbus requirements, this alloy is widely used in components such as landing gear bushings and heavy-duty bearings.

Combining copper, zinc, aluminium and manganese, UZ19A6 offers an excellent balance of mechanical strength, corrosion resistance and durability, making it suitable for use in high-load and high-wear environments. In addition to aerospace applications, it is also used across marine, industrial and power generation sectors where reliability under pressure is essential.

As one of the strongest copper-zinc alloys available in wrought form, UZ19A6 is often selected for applications requiring long service life, resistance to deformation and consistent performance under extreme operating conditions.

Related Alloys

Alloys related to UZ19A6 include other high-strength manganese bronzes such as CZ114, as well as nickel aluminium bronzes like C63000 and C63200. While UZ19A6 is often selected for aerospace and high-load applications, aluminium bronzes may be preferred in marine environments due to their superior corrosion resistance. For lower load bearing applications, phosphor bronze alloys such as PB1 may provide improved anti-friction properties.

Equivalent Specifications

NF L14 707
UZ19A6
NF A 53703:1982
DIN 17660:1983 2.0500
BS EN 12165 :1998

Key Features

A complex Copper Zinc alloy commonly known as Manganese Bronze with additions of manganese, aluminium and iron to improve the tensile strength and corrosion resistance.

It is one of the highest strength copper zinc alloys and has good wear resistance in bearing applications.

Typical Uses

Aerospace

Mainly used in aerospace application for landing gear bushes and bearings where wear resistance and corrosion properties are critical. It is also used in marine, industrial and power generation sectors where strength and reliability are required.

Description	Manganese Bronze
Nominal Composition	CuZn19Al6
Alloy Type	wrought

Typical Mechanical Properties

Tensile Strength (N/mm²)	580
Proof/Yield Strength (N/mm²)	820
Elongation (%)	10
Hardness Brinell	250
Impact Izod J20°C

Typical Physical Properties

Density g/cm³	7.6
Melting Temperature Range °C	910 - 950
Thermal Conductivity W/mK	35
Electrical Resistivity μΩ.m15°C	28
Coefficient of Thermal Expansion 0-250°C	17
Relative Magnetic Permeability	1.2
Coefficient of Friction

Copper Alloys has the ability to modify existing alloys for improved performance. Many customers have benefited from this in the past.

To discuss your requirements, call a member of Copper Alloys’s technical team on +44 (0) 1782-816888, or email [email protected].

This Data is indicative only and must not be seen as a substitute for the full specification from which it is drawn. In particular, the mechanical property requirements vary widely with tempeter, product and product dimensions. The information is based on our present knowledge and is given in good faith. However, no liability will be accepted by the Company in respect of any action taken by any third party in reliance thereon.

As the products detailed may be used for a wide variety of purposes and as the Company has no control over their use; the Company specifically excludes all conditions or warranties expressed or implied by statute or otherwise as to dimensions, properties and/or fitness for any particular purpose.

Any advice given by the Company to any third party is given for that party’s assistance only and without liability on the part of the Company. Any contract between the Company and a customer will be subject to the Company’s Conditions of Sale. The extent of the Company’s liabilities to any customer is clearly set out in those Conditions, a copy of which is available on request.