Material grades

 The new strength classes

The most lightweight bus body material concept by Stalatube – 500 kg OFF?

Stalatube has created a new material concept for manufacturing extremely lightweight bus bodies with its stainless steel components. The new strength classes, STALA400F for stronger ferritics and STALA630D for stronger Lean Duplex, enable the manufacture of even lighter bus bodies, thanks to the material’s yield strength of up to 630 MPa, Yield strength 630 MPatogether with its excellent elongation and energy absorption properties.

By using the stronger materials STALA400F and STALA630D, you are able to save up to 500 kg off from your bus body. With the lighter stainless steel bus body, you can save on fuel costs and reduce emissions while still maintaining impact safety.

If bus body weight would be 500 kg less, with the saved amount of carbon dioxide emissions 500 kg off? -transport weight savingswould be able to drive 9 780 miles or 16 000 km by an average passenger vehicle.

Depending on customer’s requirements, Stalatube can deliver anything from standard tubes and sheets to tailor-made ready to assemble component kits.



For more information, please contact:
Mr. Jori Määttänen,
Sales Director, SBA Sales 
Stalatube Oy
Phone: +358 50 518 3320

Stalatube is at the front line of the development –
new materials make it possible to build lighter and lighter structures

Stalatube is the world’s biggest producer of ferritic EN 1.4003 (S40977) square and rectangular tubes. Ferritic material is the most cost effective stainless steel you can get, it has good structural corrosion resistance and relatively high strength.

Our Lean Duplex steel (EN 1.4062) is stronger than the traditional materials and helps reduce the weight of the vehicle considerably. It has superb elongation and corrosion resistance. It is also a durable, cost efficient and environmentally friendly material. Use of Lean Duplex reduces fuel costs and the environmental footprint. By combining Stalatube’s stainless steel materials, it is possible to build the most lightweight solution on the market with the lowest LCC costs.

Read more:
The most lightweight bus body material concept by Stalatube – 500 kg off?
More strength for bus body frames
Stalatube Ferritic stainless hollow sections
Stalatube Duplex and Lean Duplex hollow sections