Akshay Aluminium Castings delivers premium aluminium gravity casting components with exceptional dimensional accuracy, superior surface finish, and uncompromised mechanical integrity — engineered for the most demanding industrial applications.
Gravity die casting — also known as permanent mould casting — is a manufacturing process where molten aluminium is poured into a precision-machined steel or cast iron mould using only the force of gravity. Unlike pressure die casting, no external pressure is applied, allowing the metal to flow naturally and solidify uniformly.
At Akshay Aluminium Castings, our gravity die casting process produces components with excellent mechanical properties, reduced porosity, and a superior surface finish compared to sand casting alternatives. The permanent steel moulds enable consistent repeatability, making us the preferred gravity casting manufacturer for high-volume production runs.
This process is especially well-suited for aluminium alloys, where the slow, controlled fill produces dense, strong castings ideal for structural and load-bearing applications across automotive, industrial, and electrical sectors.
As a specialist gravity casting manufacturer, Akshay Aluminium Castings leverages the inherent benefits of the gravity die casting process to deliver components that outperform other casting methods in quality, consistency, and cost-efficiency.
Aluminium gravity castings exhibit higher tensile strength, better elongation, and improved fatigue resistance compared to sand cast parts — owing to the controlled solidification in steel moulds.
Permanent steel moulds maintain tight tolerances of ±0.2mm or better, ensuring component-to-component consistency across large production runs without the variability of sand casting.
Gravity pouring minimises turbulence during metal fill, significantly reducing gas porosity and shrinkage defects — critical for pressure-tight or structurally loaded components.
While tooling investment is higher than sand casting, the reusable steel dies deliver excellent cost-per-part economics for medium to high volume production runs — typically 500 to 100,000+ pieces.
Components from our aluminium gravity casting process achieve surface roughness values of Ra 3.2–6.3 µm, significantly finer than sand castings, often eliminating the need for additional finishing operations.
Our experienced tooling team designs gravity casting dies capable of producing intricate features, cored holes, undercuts, and wall thicknesses as low as 3mm — reducing secondary machining costs.
As a full-service gravity casting manufacturer, Akshay Aluminium Castings supplies precision components to a diverse range of industries where performance, reliability, and weight savings are critical.
Engine brackets, gearbox housings, suspension components, brake callipers, pump bodies, and lighting housings requiring structural integrity and heat resistance.
Switchgear enclosures, motor housings, busbar supports, junction boxes, heat sinks, and electronic component housings with precise dimensional requirements.
Hydraulic valve bodies, pump housings, compressor parts, gear covers, machine frames, and fluid handling components demanding pressure tightness.
Lightweight structural brackets, avionic housings, fluid system components, and connectors where strength-to-weight ratio is paramount.
Corrosion-resistant aluminium casting components for marine hardware, navigation equipment enclosures, and subsea valve bodies.
Architectural hardware, street lighting components, valve bodies for water management, and metering equipment housings.
Our gravity die casting capabilities are designed to meet the exacting standards of modern manufacturing. The table below summarises the technical parameters Akshay Aluminium Castings routinely achieves.
| Parameter | Standard Capability | Enhanced Capability | Unit |
|---|---|---|---|
| Part Weight Range | 0.1 – 25 | Up to 50 | kg |
| Dimensional Tolerance | ±0.3 | ±0.2 | mm |
| Wall Thickness (min) | 3.5 | 3.0 | mm |
| Surface Roughness (Ra) | 3.2 – 6.3 | 1.6 – 3.2 | µm |
| Alloys Processed | LM6, LM25, LM4, A380, A356 | Custom alloys available | — |
| Mould Life (steel dies) | 50,000 – 100,000 | Recoatable | shots |
| Annual Production Capacity | 5,000 / month | Scalable | pieces |
| Lead Time (Tooling) | 4 – 6 | Express: 3 | weeks |
| Lead Time (Production) | 2 – 4 | Priority available | weeks |
| Minimum Order Quantity | 50 | Sample: 5 | pieces |
| Heat Treatment | T5, T6 available | Full T4–T7 range | — |
| Post-Processing | Machining, Shot blast, Powder coat | Anodising, Plating | — |
Akshay Aluminium Castings has built its reputation over decades as a reliable, quality-driven gravity casting manufacturer serving clients across India and internationally. Our investment in modern equipment, skilled workforce, and robust quality systems makes us the partner of choice for critical aluminium gravity casting requirements.
The consistency and surface quality of Akshay's gravity castings reduced our machining time by over 30%. Their technical team understood our requirements from the first conversation.— Procurement Head, Tier-1 Automotive Supplier
Common questions about gravity die casting, aluminium gravity casting, and our manufacturing capabilities.
In gravity die casting, molten aluminium fills the mould cavity purely under gravity — no external pressure is applied. This results in lower turbulence, reduced porosity, better mechanical properties, and the ability to heat-treat the castings. Pressure die casting uses high-pressure injection (700–1000 bar), enabling thinner walls and faster cycles but with higher porosity and inability to heat treat. Gravity die casting is generally preferred for structurally critical components, while pressure die casting suits thin-walled, high-volume parts where post-treatment is not required.
The most commonly used alloys for aluminium gravity casting are LM25 (A356 equivalent) — offering excellent strength after T6 heat treatment — and LM6 (A413), which provides excellent fluidity and corrosion resistance. LM4 is used where a combination of strength and castability is needed. At Akshay Aluminium Castings, we work with the full range of BS, IS, and ASTM aluminium casting alloys and can advise on the optimal alloy for your application based on mechanical requirements, corrosion environment, and machinability needs.
Our standard minimum order quantity (MOQ) for production gravity casting is 50 pieces, though we accommodate prototype and trial orders from as few as 5 pieces for new tooling validation. Because the tooling (die) cost is a fixed investment amortised over the run, the cost-per-part economics improve significantly with higher volumes. We are happy to discuss pricing for sample quantities, pilot runs, and full production volumes based on your specific requirements.
Standard tooling lead time for a new gravity die casting mould is 4 to 6 weeks from design approval, depending on complexity. This includes die design, CNC machining, tryout castings, and any dimensional corrections required before production approval. For urgent projects, we offer express tooling in 3 weeks for simpler geometries. Our in-house tooling capability means faster responses and lower costs compared to outsourced die manufacture.
Yes. Akshay Aluminium Castings is a full-service gravity casting manufacturer offering complete post-casting processing. This includes CNC machining to tight tolerances, drilling and tapping, shot blasting, powder coating, anodising, and chrome passivation. By managing the complete process under one roof, we ensure better quality control, shorter lead times, and a single point of contact for your project — from raw casting to finished component.
Gravity die casting in permanent steel moulds offers several significant advantages over sand casting: tighter dimensional tolerances (±0.2mm vs ±0.5–1.0mm), superior surface finish (Ra 3.2–6.3 µm vs Ra 12–25 µm), better mechanical properties due to faster cooling in the steel die, improved consistency and repeatability, and lower finishing costs. Sand casting remains more economical for very large, complex, or low-volume parts. For medium-to-high volume runs requiring dimensional precision, gravity die casting is invariably the more cost-effective choice.
Send us your component drawing or 3D model and our engineering team will revert with a detailed quotation, DFM feedback, and recommended alloy specification — typically within 48 hours.