LM2 Aluminium Casting Alloy
LM2 aluminium casting alloy is a legacy British aluminium-silicon-copper casting grade used for cast components. It is not a wrought sheet or plate grade. Quotations must identify the casting process, drawing, condition, dimensions, inspection and acceptance requirements.
Standard clarification: LM2 is associated with the BS 1490 casting-alloy system and is commonly cross-referenced with EN AC-46100 / AlSi10Cu2(Fe). Current European casting requirements should be specified under BS EN 1706. ASTM B209/B209M, EN 485 and EN 573 are wrought-product standards and must not be used to define an LM2 casting.
LM2 Casting Alloy Specification
| Legacy designation | LM2 |
|---|---|
| Material family | Aluminium-silicon-copper casting alloy |
| Common EN reference | EN AC-46100 / AlSi10Cu2(Fe); confirm chemistry against the ordered standard |
| Reference framework | BS 1490 legacy designation; BS EN 1706 for current casting requirements |
| Product form | Finished cast components or casting-alloy supply, subject to inquiry |
| Condition | Casting-process and project-specific; state any heat-treatment requirement |
Material Characteristics
| Characteristic | Procurement Relevance |
|---|---|
| Casting response | Suitable geometry and process window must be reviewed with the foundry; do not infer castability from wrought-sheet data. |
| Machining | High silicon content can increase tool wear. State machining allowance, datum and finished tolerances. |
| Corrosion and finish | Exposure and surface requirements must be stated. Die-cast surfaces may not be suitable for decorative anodising without qualification. |
| Mechanical properties | Values depend on casting process, section thickness, condition and test-piece method; use project acceptance values. |
Casting Process and Quality Requirements
| Casting process | State pressure die, gravity die, sand or another approved process. |
|---|---|
| Drawing control | Provide drawing revision, critical dimensions, machining allowance and datum scheme. |
| Integrity | Define porosity limits, pressure tightness, repair restrictions and surface acceptance. |
| Inspection | Specify chemistry, dimensional report, NDT, leak testing and certificate requirements. |
RFQ Checklist
- LM2 designation and required standard edition.
- Casting process, component drawing and revision.
- Condition, component weight, quantity and machining allowance.
- Dimensional, surface, porosity and repair acceptance criteria.
- Chemical analysis, mechanical testing, NDT and leak-test requirements.
- Marking, traceability, packaging and destination.
Equivalent-grade note: Do not approve substitution from a comparison table alone. Confirm the specified chemistry, casting route, condition and acceptance criteria.
LM2 Aluminium Casting Alloy Product Images
These product images show LM2 Aluminium Casting Alloy form, surface condition and workmanship for visual verification before shipment.
LM2 Aluminium Casting Alloy Product Forms and Details
These images show available LM2 Aluminium Casting Alloy forms and product details to support size, shape and finish selection.
LM2 Aluminium Casting Alloy Applications
These images illustrate common LM2 Aluminium Casting Alloy applications and help customers evaluate the product form for their project.
LM2 Aluminium Casting Alloy Packaging and Shipping
Packaging images show how LM2 Aluminium Casting Alloy is protected, secured and identified to reduce damage during storage and international transport.
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