Bronze Round Bar 0.5625″ x 12″ Mill Finish HR50 Temper OnlineMetals

Description

Product Overview

The 642 bronze round bar, commonly known as Aluminum‑Silicon‑Bronze, is engineered to deliver a unique combination of strength, corrosion resistance, and machinability. Measuring 0.5625 inches in diameter and 12 inches in length, this bar features an unpolished mill finish that preserves the natural texture of the alloy while providing a surface ready for further processing. The HR50 temper treatment enhances tensile strength and hardness, making the bar suitable for high‑stress applications such as gears, valves, and custom‑machined components. OnlineMetals sources the alloy to ASTM‑B150 specifications, ensuring that each piece meets rigorous industry standards for chemical composition and mechanical properties.

Manufactured under controlled conditions, the bronze bar benefits from a uniform grain structure that reduces the likelihood of internal defects. This consistency translates into predictable performance during machining, welding, or heat‑treatment processes. The mill finish, while unpolished, offers a balance between aesthetic appeal and functional readiness, allowing users to apply surface treatments, coatings, or finishes as required by their specific projects. The HR50 temper designation indicates a heat‑treated state that optimizes the alloy’s hardness without compromising its inherent ductility, a critical factor for components that must endure cyclic loading.

Beyond its mechanical attributes, the 642 bronze alloy exhibits excellent resistance to seawater, freshwater, and many industrial chemicals, making it a preferred material for marine hardware, chemical processing equipment, and outdoor installations. Its inherent lubricity reduces friction in moving parts, extending service life and decreasing maintenance intervals. The bar’s dimensions are precisely controlled, with tolerances that meet the expectations of precision engineering environments, ensuring that designers can rely on exact fits and clearances in assemblies.

Usage

Engineers and fabricators frequently select this bronze round bar for applications that demand a blend of durability and workability. In the automotive sector, the bar is commonly machined into custom gears, bearing sleeves, and valve components where resistance to wear and corrosion is paramount. Marine engineers appreciate its ability to withstand saltwater exposure, using the material for propeller shafts, pump housings, and fasteners that must perform reliably in harsh oceanic conditions.

In the manufacturing of industrial equipment, the bar serves as a base material for custom‑fabricated bolts, pins, and bushings that require precise dimensional control and a high degree of tensile strength. Its compatibility with standard machining tools allows for rapid prototyping and low‑volume production runs, reducing lead times for specialized parts. Additionally, the alloy’s excellent machinability enables the creation of intricate shapes and fine details without excessive tool wear, making it a cost‑effective choice for small batch production.

Researchers and hobbyists alike benefit from the bar’s ease of handling and predictable behavior during heat‑treatment cycles. Whether the project involves creating experimental valve prototypes or crafting artistic metalwork, the material’s consistent response to annealing and quenching processes provides a reliable platform for creative exploration.

Why Choose Us

OnlineMetals distinguishes itself through a commitment to quality assurance, traceability, and customer support. Every bronze round bar is sourced from reputable mills that adhere to ASTM‑B150 and AMS‑4634 specifications, guaranteeing that the chemical composition and mechanical properties meet or exceed industry benchmarks. Our inventory management system tracks each batch, providing customers with detailed mill test reports and certification documents upon request, fostering confidence in the material’s provenance.

Our dedicated technical support team assists clients in selecting the appropriate alloy grade, temper, and finish for their specific applications. Whether you need guidance on machining parameters, heat‑treatment procedures, or corrosion‑resistant coatings, our experts are available to provide tailored recommendations. In addition, we offer flexible shipping options, rapid order fulfillment, and a straightforward return policy, ensuring that your procurement experience is as seamless as the performance of the product itself.

Key Features

• High tensile strength and hardness from HR50 temper for demanding applications
• Excellent corrosion resistance to seawater and industrial chemicals
• Unpolished mill finish preserves natural alloy texture and reduces machining time
• Meets ASTM‑B150 and AMS‑4634 standards for reliable material quality
• Responsive customer support and detailed certification documentation

FAQ

What does HR50 temper mean for this bronze bar?

HR50 temper indicates that the alloy has been heat‑treated to achieve a specific hardness level, improving its tensile strength while maintaining sufficient ductility for machining and forming operations.

Can this bar be welded or brazed?

Yes, 642 bronze can be welded using appropriate filler metals and techniques. Brazing is also effective, especially when joining to dissimilar metals, provided that proper flux and temperature controls are observed.

Is the unpolished mill finish suitable for decorative applications?

The mill finish offers a natural, matte appearance that can be left as‑is for a rustic look or further refined with polishing, plating, or coating processes to achieve a decorative finish.

What certifications are available for this product?

OnlineMetals provides mill test reports that verify compliance with ASTM‑B150 and AMS‑4634 specifications, including chemical composition, mechanical properties, and heat‑treatment details.

How should I store the bronze bar to maintain its properties?

Store the bar in a dry, temperature‑controlled environment away from direct exposure to corrosive agents. Using sealed packaging or protective coatings can further preserve its surface integrity during long‑term storage.