Intelligence – Insight – Ingenuity




High Quality Results

MRT are specialists in gravity die casting, with one of the most advanced facilities in the UK foundry industry.

Gravity Die Casting employs cast iron or steel moulds which allow aluminium and zinc castings to be produced more accurately and cheaply than with sand casting, with better surface finish, and better mechanical properties. Tooling costs of gravity casting are a fraction of those needed for pressure die casting. The rapid chilling gives excellent mechanical properties whilst non-turbulent filling ensures production of heat treatable gravity castings with minimal porosity.

MRT have a range of microprocessor controlled hydraulic gravity die casting machines, which mechanise movements of the die. The machines offer tilt pouring, and hydraulic movement on up to four axes. MRT also have facilities for producing sand cores to cast complex internal shapes.

MRT has optimised the productivity of its gravity die casting processes:

Shortening Lead Times

Lowering costs

Increasing production rates

Improving consistency

Advantages of Different Casting Processes Infographic - MRT Castings



  • Gravity Die Castings up to 5 kilos in all suitable Aluminium & Zinc Alloys
  • Principal Aluminium Alloys: LM5, LM6, LM9, LM16, LM24, LM25, LM27 & LM31
  • Principal Zinc Alloys: ZA3, ZA8, ZA12 & ZA27
  • MRT supplies castings to all standard heat treatment specifications

Our Resources

Our Resources

  • 4 AGM Automated Gravity Diecasting Machines - Featuring Microprocessor Controls, Tilt Pouring, and Hydraulic Movement on up to 4 axes
  • Advanced Melt Treatment, with Rotary Degassing
  • In-house laboratory with spectrometer and melt density checking
  • CNC Automated Fettling - Koyama CNC Automatic Fettling Cell for robotic saw-off and trimming
  • In-house Toolroom - Ensuring your tooling is regularly maintained, and problems can be remedied quickly to minimise disruption to production


Gravity Die Casting At Mrt:


Comprehensive set-up records and quality data ensure consistent production and reduce gravity die casting set-up times.


Quality is achieved by pride in workmanship, backed up by an excellent quality system to ISO9001. For critical components, MRT can provide X-ray, dye penetrant and pressure testing.


Routine tool maintenance, breakdowns and modifications can all be undertaken in-house to reduce tool down time.


Our expertise can help you optimise designs, eliminating elements which add unnecessary costs to your gravity die casting. Where required, we can also provide filling and solidification simulations using Magmasoft.


Take a look at how we work

Find out more information about MRT Castings and get a taste of our facilities.

Check out our virtual tour and find out how we can work with you on your next project. 

Watch our video here

HOW can MRT Castings help you?

I want...

New at MRT Blogs


Visit us at stand C240 on the 6th, 7th & 8th of February 2024.

Read More

MRT Castings is proud to announce that it has achieved certification to the ‘Cyber Essentials Plus’ standard.

Read More

Leading UK aluminium die casting foundry, MRT Castings Ltd, have been honoured with a Queen’s Award for Enterprise.

Read More

Powered by