Aluminum and Aluminum-Alloy Die Forgings, Hand Forgings, and Rolled Ring Forgings (Metric)

B247M-15: Standard Specification for Aluminum and Aluminum-Alloy Die Forgings, Hand Forgings, and Rolled Ring Forgings (Metric)

In the demanding world of engineering and manufacturing, the reliability and performance of critical components are paramount. For professionals working with aluminum and its alloys, ensuring the integrity of forged parts is essential. ASTM B247M-15 provides an authoritative framework for specifying and procuring high-quality aluminum and aluminum-alloy die forgings, hand forgings, and rolled ring forgings, offering a proven path to material compliance and design confidence.

What is B247M-15?

ASTM B247M-15 is an industry-leading standard that establishes comprehensive requirements for metric aluminum and aluminum-alloy forgings. Developed by ASTM International, this specification ensures that die, hand, and rolled ring forgings meet stringent chemical composition, mechanical property, and dimensional tolerances. Its primary purpose is to serve as a definitive procurement document, enabling engineers and manufacturers to specify and verify the quality of these vital components with precision.

Scope & Purpose

This essential standard governs the material properties and quality assurance for aluminum and aluminum-alloy die forgings, hand forgings, and rolled ring forgings supplied in specific tempers, including F and O1 for heat-treatable alloys. It defines maximum applicable thicknesses for these forgings and references established systems for alloy and temper designations. Importantly, this specification is the SI metric companion to Specification B247 and does not cover forging stock supplied as bar or rod, which are addressed in separate ASTM standards.

Who Must Comply?

• • Primary audience: Materials Engineers, Metallurgists, Manufacturing Engineers, Quality Assurance Inspectors, and Design Engineers.
• • Industries affected: Aerospace, Automotive, Defense, General Manufacturing, and Aluminum Manufacturing.
• • Compliance nature: Voluntary, but often mandated by contractual agreements and customer specifications.
• • Enforcement: Typically enforced through quality control procedures, material testing, and audits by customers or regulatory bodies.

Key Requirements Overview

The standard requires meticulous control over the chemical composition of the aluminum alloys used in forgings, ensuring they align with specified limits for key elements. Professionals must ensure that forgings meet defined mechanical property requirements, often verified through tensile testing of representative samples. Key provisions include adherence to specific alloy and temper designations as per recognized industry standards, ensuring consistency in material behavior. Furthermore, the specification mandates appropriate inspection and testing procedures, including chemical analysis and mechanical property verification, to confirm compliance.

Related Standards & References

ASTM B247M-15 is part of a robust ecosystem of material standards. It is complemented by Specification B211M and Specification B221M for forging stock, ensuring seamless material traceability. For mechanical testing, Test Methods B557M provides the authoritative framework for evaluating the tensile properties of these wrought products. Additionally, Practice B594 offers guidance on ultrasonic inspection, a vital non-destructive testing method for ensuring the integrity of forgings.