ASTM B691 is the ASTM standard that covers iron-nickel-chromium-molybdenum alloy (UNS N08367) rod, bar, and wire. It provides a technical basis for describing and evaluating this corrosion-resistant alloy product form, helping buyers, specifiers, and manufacturers align on material requirements. For procurement and quality control, the standard matters because it supports consistent product identification and helps reduce ambiguity when ordering wrought alloy stock for demanding applications.

ASTM B691 standard overview

ASTM B691 focuses on the specification for UNS N08367 in rod, bar, and wire forms. As an ASTM standard, it serves as a reference for material classification and product requirements tied to this specific iron-nickel-chromium-molybdenum alloy. In practice, it helps define the expectations used in manufacturing, inspection, and acceptance of the alloy product forms covered by the title. That makes ASTM B691 useful wherever controlled material properties and standardized purchasing terms are important.

Where is ASTM B691 used?

ASTM B691 is commonly used in environments that specify UNS N08367 rod, bar, or wire for fabrication, machining, forming, or further processing. It is especially relevant when alloy stock must be ordered with clear technical requirements and traceable documentation. Because the standard addresses a corrosion-resistant nickel alloy product form, it is typically referenced by engineers, purchasers, and quality teams working with metal components that require defined material consistency and reliable supply-chain communication.

Practical importance of ASTM B691

The practical value of ASTM B691 is in helping synchronize specification, procurement, and verification around one exact alloy product. By referencing a recognized ASTM standard, organizations can improve consistency across purchases and quality checks while reducing the risk of material mismatch. It also supports clearer communication between suppliers and end users when evaluating rod, bar, and wire for compliance-oriented work. For technical teams, that clarity can simplify acceptance decisions and help control production risk.

• UNS N08367 alloy product form
• Rod, bar, and wire specification
• Material identification for purchasing
• Quality control and acceptance reference
• Consistent technical communication