UNS N08020, UNS N08024, and UNS N08026 Nickel Alloy Round Weaving Wire

B475: Standard Specification for UNS N08020, UNS N08024, and UNS N08026 Nickel Alloy Round Weaving Wire

For engineers and designers working with specialized metal fabrications, understanding the properties and applications of high-performance alloys is paramount. ASTM B475 provides an essential framework for specifying and procuring round weaving wire made from UNS N08020, UNS N08024, and UNS N08026 nickel alloys. This authoritative standard ensures consistent quality and performance for critical woven wire products used across demanding industrial sectors.

What is B475?

ASTM B475 is a comprehensive standard that defines the material requirements for specific grades of nickel alloy round weaving wire. Originating from ASTM Committee B02 on Nonferrous Metals and Alloys, its primary purpose is to establish precise chemical composition, mechanical properties, and dimensional tolerances for these alloys, ensuring their suitability for weaving applications.

Scope & Purpose

This industry-leading standard governs the production and procurement of round weaving wire made from UNS N08020, UNS N08024, and UNS N08026. It specifies requirements for chemical makeup, tensile strength, and permissible diameter variations. Importantly, B475 clarifies that this wire is customarily not welded and directs users to Specification B473 for welding applications. The standard focuses exclusively on the material properties of the wire itself, not the final woven product.

Who Must Comply?

• • Primary audience: Materials Engineers, Metallurgists, Quality Control Inspectors, Production Engineers, and Procurement Specialists involved in specifying or sourcing nickel alloy wire.
• • Industries affected: Aerospace, Chemical Processing, Manufacturing, Metal Fabrication, and Wire Goods Manufacturing.
• • Compliance nature: Voluntary, but adoption is highly recommended for ensuring product quality and interoperability.
• • Enforcement: Primarily by purchasers through their quality assurance processes and by manufacturers to meet customer specifications.

Key Requirements Overview

The standard requires that the nickel alloy wire conform to specific chemical composition limits for elements such as nickel, chromium, and molybdenum, as detailed in its tables. Professionals must ensure that the wire meets defined mechanical property specifications, including tensile strength, particularly for annealed or cold-drawn conditions. Key provisions include strict adherence to specified diameter tolerances, ensuring uniformity and preventing issues in weaving processes. Furthermore, the standard mandates that the wire be free from defects that could impair its intended use, such as laps or pits, and outlines acceptable finishes.

Related Standards & References

ASTM B475 is often used in conjunction with proven standards like ASTM E8, Test Methods for Tension Testing of Metallic Materials, for verifying mechanical properties. Specification B880, Specification for General Requirements for Chemical Check Analysis Limits for Nickel, Nickel Alloys and Cobalt Alloys, provides guidance on acceptable variations for chemical analysis. For broader applications of these nickel alloys in bar and wire forms, Specification B473 serves as a complementary document.