Bronze Round Bar 642 Unpolished 1″ x 36″ HR50 Temper OnlineMetals

Description

Product Overview

The 642 bronze round bar offered by OnlineMetals is a premium raw material engineered for demanding industrial applications. Crafted from aluminum‑silicon‑bronze, this bar combines the classic strength of traditional bronze with enhanced corrosion resistance and superior machinability. Measuring 1 inch in diameter and 36 inches in length, the bar is supplied in an HR50 temper, providing a balanced hardness that resists wear while remaining easy to machine for precise component fabrication. The unpolished mill finish preserves the material’s natural surface texture, allowing for post‑processing treatments such as polishing, plating, or coating without the need for extensive surface preparation. Each bar conforms to ASTM‑B150 and AMS‑4634 specifications, ensuring consistent chemical composition and mechanical properties across the entire batch. The product is packaged in a compact 36 × 1 × 1‑inch box weighing approximately 7.6 pounds, making it convenient for storage, handling, and shipping directly to your workshop or manufacturing floor.

Usage

Designed for versatility, the 642 bronze round bar excels in a wide range of applications where strength, durability, and resistance to harsh environments are paramount. Engineers and fabricators frequently select this material for the production of gears, valves, and blots used in marine, aerospace, and chemical processing equipment. Its excellent wear resistance makes it suitable for high‑speed rotating components, while the inherent corrosion resistance protects against saltwater, acidic solutions, and other aggressive media. The bar’s machinability allows for tight tolerances and intricate geometries, enabling the creation of custom parts such as pump shafts, bearing housings, and precision tooling. Because the material meets ASTM‑B150 standards, it is also approved for use in critical safety‑related components where regulatory compliance is essential. Whether you are prototyping a new valve design, repairing an existing gear assembly, or fabricating a bespoke component for a specialized machine, the 642 bronze round bar provides a reliable foundation that delivers consistent performance throughout the product lifecycle.

Why Choose Us

OnlineMetals distinguishes itself through a commitment to quality, transparency, and customer support that extends far beyond the point of sale. Every 642 bronze round bar is sourced from reputable smelters and undergoes rigorous quality control inspections, including dimensional verification, hardness testing, and chemical analysis, to guarantee that each piece meets the exacting standards of ASTM‑B150. Our inventory management system tracks each batch, providing traceability and ensuring that you receive material with consistent properties, batch‑to‑batch. In addition to product quality, we offer a responsive technical support team staffed by materials engineers who can advise on optimal machining parameters, heat‑treatment processes, and finishing techniques tailored to your specific application. Shipping is fast and reliable, with most orders dispatched within 24 hours, and we provide detailed packaging information to help you plan for safe handling. Should you encounter any issues, our after‑sales service includes hassle‑free returns, material substitution, and on‑call assistance to resolve any concerns promptly. By choosing OnlineMetals, you gain a trusted partner who prioritizes your project success and delivers the raw material you need with confidence and consistency.

Key Features

• High strength aluminum‑silicon‑bronze alloy delivers reliable load‑bearing capacity.
• Exceptional corrosion resistance extends service life in marine and chemical environments.
• HR50 temper provides a balanced hardness for wear resistance while remaining easy to machine.
• Unpolished mill finish allows for custom surface treatments without additional preparation.
• Dedicated customer support and fast shipping ensure you stay on schedule.

FAQ

What does HR50 temper mean for this bronze bar?

HR50 temper indicates that the material has been heat‑treated to achieve a Rockwell hardness of approximately 50 on the HR scale. This level of hardness offers a good compromise between strength and machinability, making the bar suitable for both high‑stress components and precision machining operations.

Can this bar be welded or brazed?

Yes, 642 bronze is compatible with both welding and brazing techniques. When welding, it is recommended to use a filler material that matches the alloy composition to maintain corrosion resistance. Brazing can be performed with standard bronze or copper‑based alloys, and the unpolished finish does not impede the bonding process.

Is the material compliant with ASTM‑B150 specifications?

Absolutely. The 642 bronze round bar meets all chemical composition and mechanical property requirements outlined in ASTM‑B150, ensuring that it is suitable for applications that demand strict material standards and traceability.

What are the typical machining speeds for this alloy?

Machining speeds will vary depending on the specific operation and tooling, but a general guideline is to use cutting speeds between 80 and 120 surface feet per minute (SFM) with carbide tools. Coolant should be applied to reduce heat buildup and extend tool life, especially when performing high‑precision cuts.

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 moisture or corrosive chemicals. Keeping the material in its original packaging until use helps protect the surface finish and prevents accidental contamination.