Bronze Round Bar 655 Unpolished H04 Temper 0.25″ x 36″ OnlineMetals

Description

Product Overview

The 655 Bronze Round Bar is a premium-grade silicon bronze rod engineered to meet ASTM B98 specifications. With a precise 0.25″ (6.35 mm) diameter and a convenient 36″ (914 mm) length, this bar offers a balance of strength, ductility, and corrosion resistance that is essential for a wide range of industrial applications. Finished with an unpolished mill (H04) temper, the surface retains its natural texture, providing excellent grip for machining and forming processes while preserving the material’s inherent protective qualities.

Manufactured by OnlineMetals, a trusted supplier in the raw materials sector, the bar is produced using controlled rolling techniques that ensure uniform grain structure and consistent mechanical properties throughout the entire length. The product complies with ASTM B98, guaranteeing that it meets rigorous standards for chemical composition, tensile strength, and elongation. This compliance is critical for customers who require reliable performance in demanding environments such as marine, aerospace, and heavy‑duty equipment manufacturing.

Usage

Designed for versatility, the 655 Bronze Round Bar excels in applications where both strength and corrosion resistance are paramount. Marine hardware manufacturers frequently select this material for propeller shafts, pump housings, and fasteners that are constantly exposed to saltwater and harsh weather conditions. Its excellent resistance to dezincification and stress corrosion cracking ensures long‑term durability, reducing maintenance costs and downtime.

In addition to marine uses, the bar is well‑suited for the production of bushings, bearings, and custom fasteners in the automotive and aerospace sectors. The material’s good formability allows it to be easily machined, turned, and welded, enabling engineers to create complex geometries without compromising structural integrity. Whether you are fabricating a prototype or a high‑volume production part, the 655 Bronze Round Bar provides the reliability needed for critical components.

For hobbyists and small‑scale fabricators, the bar’s manageable size and weight make it an ideal candidate for educational projects, custom tool making, and artistic metalwork. Its natural bronze hue adds aesthetic appeal to decorative pieces while still delivering functional performance.

Why Choose Us

OnlineMetals distinguishes itself through a commitment to quality, transparency, and customer support. Every batch of 655 Bronze Round Bar undergoes rigorous testing, including chemical analysis and tensile testing, to verify that it meets or exceeds ASTM B98 requirements. Our state‑of‑the‑art inventory management system ensures that you receive the exact dimensions and finish you order, minimizing the risk of mismatched parts.

We understand that lead times can impact project schedules, which is why we maintain a robust stock of standard sizes, including the 0.25″ x 36″ configuration, ready for immediate shipment. Our knowledgeable technical support team is available to assist with material selection, machining recommendations, and post‑sale service, ensuring that you achieve optimal results from the first cut to the final assembly.

Choosing OnlineMetals means partnering with a supplier that values sustainability. Our manufacturing processes incorporate recycling of metal scrap and energy‑efficient practices, aligning with environmental stewardship goals while delivering high‑performance products.

Key Features

• Superior corrosion resistance for marine and outdoor applications
• Consistent 0.25″ diameter and 36″ length for precise engineering needs
• H04 temper provides a durable unpolished finish that enhances grip during machining
• Meets ASTM‑B98 standards, guaranteeing reliable mechanical properties
• Dedicated customer support and fast shipping from OnlineMetals

FAQ

What does the H04 temper designation mean?

H04 indicates a mill finish that has been cold worked to a low degree, resulting in a surface that is neither polished nor heavily deformed. This finish retains the material’s natural texture, offering good machinability while preserving its corrosion‑resistant properties.

Can this bronze bar be welded?

Yes, 655 silicon bronze is weldable using standard welding techniques such as TIG or MIG with appropriate filler rods. Proper pre‑heat and post‑heat treatments are recommended to maintain mechanical strength and avoid cracking.

Is the bar suitable for high‑temperature environments?

While 655 bronze performs well at moderate temperatures, it is not intended for continuous exposure above 500 °F (260 °C). For high‑temperature applications, consider alloys specifically designed for elevated temperature service.

How does the corrosion resistance of 655 bronze compare to other bronze alloys?

655 bronze offers excellent resistance to seawater corrosion, dezincification, and stress corrosion cracking, outperforming many traditional copper‑tin bronzes. Its silicon content enhances the protective oxide layer, making it a preferred choice for marine hardware.

What machining practices are recommended for this material?

Use sharp carbide tools and moderate cutting speeds to achieve clean cuts. Coolant is advisable to reduce heat buildup, and the unpolished finish provides good chip evacuation, minimizing tool wear.

In summary, the 655 Bronze Round Bar from OnlineMetals delivers a combination of strength, durability, and corrosion resistance that meets the rigorous demands of industrial, marine, and custom fabrication projects. Its precise dimensions, ASTM‑B98 compliance, and supportive customer service make it a reliable choice for engineers, manufacturers, and hobbyists alike.