Customer case

Strenx® structural steel makes Mapro Systems’ autonomous agricultural equipment work harder with less effort

December 22, 2021 6 min read

Case details

Country Sweden
Company Mapro Systems AB
Industry Agriculture, forestry and fishing

Strenx® performance steel is adding performance for farming and forestry. Mapro Systems is an innovation-driven company which knows the value of maximizing the equipment’s strength to weight ratio. They know that Strenx® high-strength structural steel delivers above and beyond their expectations.

An autonomous agricultural tractor working on a field

“We have used other steels before in our chassis. When we upgraded to Strenx® some years ago we immediately could go up in size without adding any weight,”

says Mats Andersson, owner and inventor at Mapro Systems.

Strenx® adds strength in innovative self-guiding tractor

Mapro Systems manufactures a wide range of highly versatile equipment under the Mac Trac brand. It is a tractor suitable for a variety of agricultural attachments, performing common tasks for farmers, such as plowing, sowing, creating beds, weeding, cultivating and row hoeing. The latest innovation in the MacTrac family is a GPS guided tractor that performs its duties without any human intervention. This means the farmer can get useful work done practically 24/7, and free up time for other tasks than sitting on the tractor!

The chassis of the MacTrac is made of Strenx® 700 grade steel. The design goals are maximum torsional and longitudinal stiffness at minimum weight. The chassis’ main load-bearing beams are made of Strenx® steel strips bent into a U shape. This gives the frame high strength in all load directions. Bending the beams from one piece without any welding also speeds up production. Aside from Strenx® 700MC steel, Mapro Systems also uses Strenx® Tube 700MLH in a square shape for other parts of the frame.

A CAD image of a chassis made in Strenx® steel

A CAD image of a chassis made in Strenx® steel

A productive collaboration

“Working with SSAB as a partner in design and manufacturing is a great advantage for us. When optimizing the weight, it’s important to make exact thickness calculations for the Strenx® material. The reason weight is so important is that the MacTrac must also be able to work on wet and loose soil without destroying the structure of the soil and leaving deep tracks that remain throughout the season.

A light tractor creates a wider window for working in the fields, making farmers less dependent on the weather, which of course has productivity benefits. The lightweight and strong frame can carry wider equipment. At the end of the day, more work has been done, even in conditions where heavier machinery would be unable to work at all. Another big issue for us is to consume as little energy as possible. Thanks to the low weight the MacTrac needs less fuel to operate,” says Mats Anderson.

MacTrac is a GPS guided tractor that performs its duties without any human intervention

MacTrac is a GPS guided tractor that performs its duties without any human intervention

Customer benefits

  • Reduced weight for less soil compaction
  • Farmers can work independent of the weather conditions 
  • Lightweight and strong frame can carry wider equipment
  • Low weight reduces fuel consumption 
  • Strenx® 700MC and Strenx® Tube 700MLH for optimized strength-to-weight ratio


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Strenx® performance steel

Strenx® performance steel can make your products stronger, lighter, safer, more competitive and more sustainable. We call it performance steel, because it adds performance beyond ordinary structural steel.

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