SIST EN 4324:2004

Overview

EN 4324:2001 is a CEN (European) aerospace material standard that defines requirements for aluminium alloy AL‑W42201 used as a filler metal for welding - rod form. Prepared under the AECMA (European Association of Aerospace Manufacturers) framework, this standard sets out the material designation, production form, delivery condition and the general quality and verification requirements needed for aerospace welding rod applications.

Key topics and requirements

• Material designation and scope: Specifies aluminium alloy AL‑W42201 intended as a welding filler metal in rod form for aerospace use.
• Form and production: The product form is a rod produced by casting and supplied in the as‑cast delivery condition.
• Chemical composition and melting method: The standard defines the alloy’s compositional requirements and the agreed method of melting; specific composition limits and melting details are included in the full document.
• Delivery, heat treatment and marking: Delivery condition is defined; a delivery‑condition code (U) and heat‑treatment/usage notes are provided. Marking and batch identification requirements follow the referenced procedures.
• Inspection and testing: External/internal defect criteria, batch uniformity (material verification), dimensional inspection and marking inspection reference EN 3879 and EN 2043 for applicable test regimes and qualification programs.
• Hydrogen control: The standard notes that maximum hydrogen content must be agreed between manufacturer and purchaser.
• Product qualification: Qualification and semi‑finished product requirements are covered in line with EN 2043; qualification program to be agreed between manufacturer and purchaser.
• Typical use: Commonly employed for welding aluminium alloy castings such as A356 and A357.

Applications and users

• Primary users: Aerospace manufacturers, welding consumable producers, material engineers, procurement specialists and quality assurance teams working in aircraft structure and component fabrication.
• Practical applications: Specification guidance for selecting and producing welding rods used to repair or join aluminium castings and components in aerospace assemblies where consistent alloy chemistry, casting production and traceable inspection/qualification are required.
• Procurement & quality: Provides the contractual basis for suppliers and purchasers to agree composition, delivery condition, inspection regimes and qualification testing.

Related standards

• EN 3879 - Aerospace metallic materials: filler metal for welding (technical specification)
• EN 2043 - General requirements for semi‑finished product qualification
• EN 4258 - Organization of aerospace metallic material standards
• EN 4500‑2 - Rules for drafting aluminium alloy material standards

Keywords: EN 4324:2001, aluminium alloy AL‑W42201, filler metal for welding, welding rod, aerospace standard, EN 3879, EN 2043, A356, A357, CEN, AECMA.