Bronze Round Bar 655 Unpolished H04 0.5″ x 72″ OnlineMetals

Description

Product Overview

The 655 bronze round bar, also known as silicon bronze, is a high‑performance alloy prized for its combination of strength, resilience, and exceptional corrosion resistance. Manufactured to ASTM B98 standards, this bar features a 0.5 inch (12.7 mm) diameter and a 72 inch (1829 mm) length, providing a substantial length for a variety of industrial applications. The H04 temper indicates a mill‑finished condition that retains the material’s natural, unpolished surface, allowing for superior formability during machining processes. OnlineMetals sources the raw material from reputable mills, ensuring consistent chemical composition and mechanical properties across each batch. The bar weighs approximately 4.38 pounds (1.99 kg), making it manageable for handling while still delivering the durability required for demanding environments such as marine hardware, fasteners, bushings, and shafts.

Usage

Designed for marine and offshore applications, the 655 bronze round bar excels in environments where exposure to saltwater, humidity, and fluctuating temperatures can accelerate corrosion in less robust materials. Its inherent resistance to seawater corrosion makes it an ideal choice for shipbuilding components, propeller shafts, and underwater fasteners. Beyond marine uses, the alloy’s excellent ductility and fatigue resistance support its deployment in industrial machinery, where it can be fabricated into custom bushings, bearing sleeves, and precision shafts. The unpolished mill finish provides a clean surface that readily accepts machining, welding, and surface treatments, enabling engineers to tailor the final product to specific performance criteria. Whether the bar is being turned on a lathe, milled for complex geometries, or forged into larger assemblies, its consistent grain structure ensures predictable behavior throughout the manufacturing process.

Why Choose Us

OnlineMetals distinguishes itself through a commitment to material integrity, transparent sourcing, and responsive customer service. Each 655 bronze bar is inspected for dimensional accuracy, surface condition, and compliance with ASTM B98 specifications before shipment, providing confidence that the product will meet engineering tolerances. Our inventory management system tracks batch numbers, allowing traceability for quality control and regulatory compliance. In addition to the product itself, we offer technical support from metallurgical experts who can advise on heat‑treatment options, machining best practices, and design considerations to maximize the alloy’s performance. Shipping is handled with protective packaging to prevent damage during transit, and we provide a straightforward return policy should any issues arise. By choosing OnlineMetals, customers gain a reliable partner that prioritizes product excellence and long‑term relationships over short‑term sales tactics.

Key Features

• Robust 0.5″ diameter and 72″ length for versatile machining and fabrication.
• H04 mill finish retains natural surface, enhancing formability and reducing preparation time.
• Superior corrosion resistance ideal for marine hardware, fasteners, and shafts.
• Meets ASTM‑B98 standards, guaranteeing consistent chemical composition and mechanical properties.
• Dedicated technical support and reliable after‑sales service from OnlineMetals.

FAQ

What does the H04 temper mean for this bronze bar?

H04 indicates a mill‑finished condition where the material is supplied in its as‑drawn state without additional heat treatment or surface polishing. This retains the alloy’s natural grain structure, offering excellent machinability and the ability to apply custom heat‑treatments or surface finishes as needed.

Can this bronze bar be welded or brazed?

Yes, 655 silicon bronze is commonly welded using TIG or MIG processes and can be brazed with appropriate filler metals. Proper cleaning and pre‑heating are recommended to achieve optimal joint strength.

Is the bar suitable for high‑stress shaft applications?

The alloy’s combination of tensile strength, fatigue resistance, and corrosion resistance makes it well‑suited for shafts that operate in marine or corrosive environments. Design engineers should verify load calculations and consider appropriate safety factors.

How do I ensure dimensional accuracy when cutting the bar to length?

Use precision cutting equipment such as a band saw with fine‑toothed blades or a CNC lathe. Verify the final dimensions with calibrated measuring tools, and account for any material removal due to machining tolerances.

What support does OnlineMetals provide after purchase?

Our customer service team offers technical assistance, material certifications, and guidance on machining practices. We also provide a clear return policy and rapid response to any quality concerns.