Gravity Die Casting | Reliable Aluminium & Copper Castings
Gravity die casting (GDC) uses the natural force of gravity to fill reusable steel dies with molten aluminium or copper alloys — delivering dense, consistent castings at lower tooling investment than pressure processes. Ideal for mid-volume production of thick-section, structurally sound components across marine, lighting, defence, and industrial applications. Partner with Marcus Hi-Tech for castings that combine process economy with proven structural integrity.
How It Works
Step 1: Design Review
Our engineers assess wall thickness, fill path, and solidification direction. Tilt casting is recommended where turbulence-free fill is critical for deep or narrow sections.
Step 2: Alloy Selection
We select from LM6 (marine), LM25-T6 (structural), LM4 (general engineering), or Aluminium Bronze (seawater service) based on your performance and environment requirements.
Step 3: Mould Build & First-Off
Reusable steel or cast iron moulds are fabricated and die-coated. First-off samples are inspected for dimensions, fill quality, and surface finish before production approval.
Step 4: Production & Despatch
Full batch records, material certificates, and inspection reports accompany every shipment. Post-cast operations — fettling, shot blast, CNC machining, surface treatment — handled in-house.
Product
1. Marine Outboard Engine Bracket
Model ID: MHT-MAR-EBK-LM6
Industry: Marine & Offshore
Description: Saltwater-rated structural bracket for outboard engine mounting. LM6 alloy delivers natural seawater corrosion resistance without coating dependency. Heavy-section walls handle continuous propulsion loads over long service life.
Technical Specifications:
- Material: Aluminium LM6 (Al-Si12)
- Wall Thickness: 6mm – 18mm
- Finish: Shot Blast + Clear Anodize
- Availability: MOQ 200 units
2. LED Street Lighting Housing
Model ID: MHT-LGT-HSG-LM25
Industry: Lighting & Infrastructure
Description: Weatherproof luminaire housing with integral cast cooling fins for LED street and architectural lighting. LM25 ensures dimensional stability for 25-year infrastructure service life. IP66-compatible geometry cast directly — no secondary fabrication.
Technical Specifications:
- Material: Aluminium LM25
- Finish: Polyester Powder Coat (RAL custom)
- Feature: Integral Cast Cooling Fins
- Availability: MOQ 500 units
3. Defence Control Panel Housing
Model ID: MHT-DEF-CPH-LM25T6
Industry: Defence & Security
Description: Ruggedised enclosure for field communications and vehicle-mounted defence electronics. LM25-T6 provides shock and vibration resistance to MIL-STD-810 compatible design levels. Cast-in EMI shielding insert provisions eliminate secondary assembly.
Technical Specifications:
- Material: Aluminium LM25-T6
- Finish: Hard Anodize + Chemical Film
- Feature: Cast-in EMI Shield Provision
- Availability: Low-Mid Volume / Controlled Supply
4. Premium Cookware Body
Model ID: MHT-CKW-PAN-LM6
Industry: Consumer & Household
Description: Thick-base frying pan and casserole body for premium cookware brands. Uniform 5–8mm base thickness ensures even heat distribution across gas, induction, and ceramic hobs. Smooth as-cast surface accepts PTFE and ceramic non-stick coatings with excellent adhesion.
Technical Specifications:
- Material: Aluminium LM6 / Food-Grade Alloy
- Base Thickness: 5mm – 8mm uniform
- Coating: PTFE / Ceramic Non-Stick compatible
- Availability: MOQ 1,000 units
5. Seawater Valve Body
Model ID: MHT-VLV-SEA-ABZ
Industry: Oil, Gas & Marine
Description: Heavy-duty valve body for offshore platform pipework and naval sea chest installations. Aluminium Bronze CA104 resists cavitation erosion, biofouling, and dealuminification in high-velocity seawater — outlasting stainless steel on lifecycle cost. CNC-finished bore to PN16/PN25 pressure class tolerances.
Technical Specifications:
- Material: Aluminium Bronze CA104
- Pressure Class: PN16 / PN25
- Finish: As-cast + CNC Bore Finishing
- Availability: Custom Orders
