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Brass OT58

Brass is an easy-to-work material from which precise parts can be obtained. It can also be hot worked by deformation. Its use is widespread in the creation of small parts and components for hydraulic and heating systems.

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Brass OT58 CNC machining


  • Particularly corrosion resistant brass
  • Good traction strength
  • Good breaking load


  • Expensive
  • Heavy


  • Machining Process: CNC
  • Tolerance: ISO 2768-1 fine (f) or medium (m) class. Info
  • Max size: 300x300x50mm ; 12x12x2 in
  • Lead time: <4 days



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OT58 brass is a non-ferrous metal known for its excellent mechanical properties, excellent machinability and remarkable chemical resistance. This material stands out for its versatility, being particularly appreciated in applications that require low friction, good electrical conductivity and precision in the manufacture of components. Thanks to these features, it is the material of choice in the fittings sector, as well as in numerous other industrial fields.


Corrosion Resistance: OT58 stands out in the panorama of non-ferrous materials due to its extraordinary corrosion resistance. This characteristic makes it particularly suitable for applications in aggressive environments, where moisture, salt or chemicals could compromise the integrity of other materials. Its chemical composition gives it an almost impenetrable barrier against corrosive agents, ensuring long component life even under the most adverse conditions. This property is crucial for use in industries such as maritime, chemical and faucets, where corrosion resistance is a requirement to maintain efficiency and safety over time.

Tensile Strength and Breaking Load: OT58 brass not only excels in its corrosion resistance but also stands out for its remarkable mechanical properties, including good tensile strength and high breaking load. These characteristics indicate the material's ability to withstand tensile forces without breaking, making it ideal for creating components that must withstand heavy loads or continuous mechanical stress. High tensile strength and ultimate tensile strength are synonymous with durability and reliability, ensuring that manufactured components can maintain their functionality and structural integrity over long periods, reducing the need for maintenance or replacement.

Machinability: One of the most appreciated aspects of this alloy is its exceptional machinability. This material can be easily machined both cold and hot, allowing engineers to produce parts with a high degree of precision and detail. The ability to be shaped, cut and finished with ease opens the door to the production of complex, high-quality components, including those with intricate geometries or tight tolerances. This workability, combined with brass's other properties, makes it an extremely versatile material suitable for a wide variety of industrial and craft applications, optimising production processes and improving the quality of the final product.


Expensive: One of the aspects that can be a challenge in adopting this material is its relatively high cost, especially when compared to other non-ferrous metals. This price difference is attributable to several factors, including the extraction and refining process of the basic components of brass, such as copper, which is one of the main constituents and known for its fluctuating price in the metal market. In addition, the production of high-quality brass such as OT58 requires advanced technology and stringent quality controls, which further contribute to the final cost. This can influence the choice of material in projects with limited budgets or in mass applications where the cost of the primary product plays a crucial role in determining the final product price. However, it is important to consider that the higher initial investment can be offset by OT58's durability, corrosion resistance and excellent mechanical properties, which can reduce maintenance and replacement costs in the long term.

Heavy: Although the heavy weight of OT58 brass gives the material a feeling of solidity and durability, it can be a limitation in some applications where weight is a critical factor. Compared to materials such as aluminium or some plastic alloys, brass is significantly heavier, which may affect its suitability in industries such as aerospace, automotive or portable devices, where reducing overall weight is essential to improve performance or ease of use. This feature therefore requires careful consideration at the product design stage, where the benefits in terms of strength, processability and performance must be balanced against the implications of the additional weight. However, in many applications, the higher weight is not a deterrent, due to its superior mechanical properties and corrosion resistance, which make it a preferable choice over other lighter but less performing materials in certain contexts.


Fittings sector: In the fittings sector, it is particularly valued for its excellent machinability and ability to achieve high levels of precision in the production of taps, valves and other flow control components. The ease with which it can be moulded, combined with its resistance to corrosion, makes it the preferred choice for products that not only need to maintain an aesthetically pleasing appearance over time but also ensure reliable functionality in wet environments and in the presence of water, often chemically treated.

Components for plumbing and heating systems: this metal is also highly sought after for the manufacture of critical components for plumbing and heating systems. Its ability to withstand high temperature conditions and its excellent corrosion resistance make it ideal for applications requiring reliability and durability. These properties ensure that systems maintain their integrity and functionality even in harsh operating environments, reducing the risk of failure and maintenance requirements.

Applications requiring low friction: OT58 is also chosen for the production of components where friction must be minimised. This feature is particularly important in mechanical applications where low friction can mean reduced component wear, improved energy efficiency and increased product life. Examples include bearings, gears and small engine components, where brass contributes to smoother and more reliable operation.

Electrical conductivity: Although not the first material that comes to mind for electrical applications, given the superior conductivity of pure copper, this brass also finds use in this sector due to its good electrical conductivity. This makes it suitable for the manufacture of electrical components, connectors and switch parts, where the combination of electrical conductivity with mechanical and corrosion resistance offers an optimal balance between performance and durability.


OT58 brass emerges as an exceptionally versatile and reliable material, perfectly suited for a wide range of industrial and craft applications. Its excellent corrosion resistance, coupled with remarkable mechanical properties such as good tensile strength and high tensile strength, makes it an ideal candidate for demanding operating environments and applications requiring long-term durability and reliability. Its superior machinability facilitates the production of complex, high-quality components, making this alloy a preferred choice for designers and engineers.

Despite the fact that its relatively high cost and weight can be a challenge in certain contexts, these aspects are often offset by the material's superior performance and long life, which can translate into significant savings over time in terms of maintenance and replacement. The broad range of applications, from fittings to electrical components, demonstrates the flexibility and adaptability of OT58, making it an irreplaceable material in many sectors.

The choice of this metal reflects a considered compromise between initial cost and long-term performance, emphasising the importance of considering the entire product life cycle when selecting materials. With its unique properties and proven reliability, OT58 brass continues to be a first-class material solution for a wide range of applications, consolidating its position as one of the most valuable and sought-after non-ferrous materials on the market.


Tensile breaking load 480 MPa
Modulus of elasticity 97 GPa
Elongation at break 20%
Density 8,4 g/cm³
Melting temperature 870 ºC
Hardness 120 Brinell
Yield Strength 420 MPa


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