Requirement specification template: Aluminum Semi-finished Product for Cold Forming
TemplatesThis template provides a specialized framework for the specification of extruded or drawn aluminum round bars. The focus is on metallurgical purity and mechanical parameters, which are crucial for process-reliable cold forming (cold extrusion).
Note on Content: All technical requirements in this template are pre-formatted and marked with a "[Placeholder requirement, review required]" tag. This ensures that every technical parameter (e.g., grain size, hardness) is consciously reviewed and validated by your engineering team before final release.
How to use this template
- Define Material: This template is based on EN AW-6082. If you use other alloys (e.g., 6060 or 7075), adjust the chemical limits within the ETRM environment.
- Validate Tolerances: Check if the h9 tolerance field is sufficient for your automated feeding system or if tighter tolerances (e.g., h8) are required.
- Inspection Certificate: Define which proofs are required per batch (standardized to Inspection Certificate 3.1 according to DIN EN 10204).
Tag Legend (Disciplines & Categories)
Each requirement is categorized to support coordination between materials science, manufacturing, and logistics:
- Material: Specifications regarding chemical composition and alloy quality.
- Quality: Requirements for microstructure, purity, and metallographic documentation.
- Geometry: Physical dimensions, tolerance fields, and form accuracy (straightness).
- Process: Parameters that directly influence processability in the press (hardness, oiling).
Regulatory Framework & Standards
Use this template to ensure compliance with key metal processing standards:
- DIN EN 573-3: Chemical composition and form of aluminum products.
- ASTM E112: Standard test methods for determining average grain size.
- DIN EN 10204: Types of inspection documents for metallic products.
Requirement Preview
| Structure element | Requirement | Description | Tags |
|---|---|---|---|
1 Material & Chemical Analysis | Alloy Composition | Material EN AW-6082 (AlSi1MgMn) according to DIN EN 573-3. Silicon content limited to 0.7 - 1.3% to optimize flow resistance. | Material |
1 Material & Chemical Analysis | Iron Content Limitation | Maximum Fe content of 0.35% to minimize the formation of brittle intermetallic phases. | MaterialQuality |
2 Microstructure & Metallography | Average Grain Size (G-number) | Uniform fine-grained microstructure according to ASTM E112 with an index G ≥ 6 (diameter ≤ 45 µm). | Quality |
2 Microstructure & Metallography | Freedom from Segregation | Free from primary and macro-segregations in cross-section (verification by macro-etching according to ASTM E340). | Quality |
2 Microstructure & Metallography | Inclusion Rating (Cleanliness) | Maximum inclusion size according to ISO 4967 category K0 to prevent die wear. | QualityProcess |
3 Mechanical Properties | Brinell Hardness (HBW) | Delivery condition O/H111 (annealed). Target value 35 - 45 HBW according to DIN EN ISO 6506-1. | MaterialProcess |
3 Mechanical Properties | Maximum Tensile Strength (Rm) | Rm must not exceed 150 MPa to limit the required forming forces of the press. | Material |
4.1 Precision Dimensions (h9) | Diameter Tolerance (h9) | Execution in the h9 tolerance field according to DIN EN 754-3 to ensure automated feeding. | Geometry |
4.1 Precision Dimensions (h9) | Straightness Tolerance | Maximum deviation of 0.5 mm over a 500 mm measuring distance to avoid loading errors. | Geometry |
5 Surface Condition | Surface Roughness (Ra) | Mean roughness Ra ≤ 1.6 µm according to DIN EN ISO 4287. Free from drawing marks. | QualityProcess |
5 Surface Condition | Permissible Defect Depth | Surface must be free from mechanical damage, cracks, or impacts deeper than 0.05 mm. | Quality |
6 Quality Assurance & Logistics | Oiling & Cleaning | Light oiling with drawing oil (forming-compatible). Removable without residue for subsequent anodizing processes. | MaterialProcess |
6 Quality Assurance & Logistics | Inspection Certificate 3.1 | Provision of a certificate according to DIN EN 10204 including chemical melt analysis per batch. | Quality |
Disclaimer: This template serves as a guide for requirement management. All technical values must be approved by a materials engineer for the specific application.