What if a car fuel tank was made from stainless?

Leslie McManus

It weighs almost half of its plastic alternative, gains three liters of volume, and provides serious advantages to its crashworthiness. And the tank is fully recyclable.



Conventional wisdom suggests that plastics are the best material for construction of automotive fuel tanks. But innovation demands new ways of thinking. Like a pebble dropped in water, innovation ripples outward. What if fuel tanks could be lighter – and safer? What if they could be recycled instead of abandoned to landfill? How could that impact automotive design, or emissions, or even efficiencies? Where does a lighter, safer, durable fuel tank take us? Quite frankly, it creates a visionary model for the future.


Possibilities emerge

HyTens® stainless steel anticipates that challenge, and more. In an effort to reduce emissions, OEM producers around the world are looking for ways to reduce vehicle weight. Increasingly, they are turning to stainless steel. This grade is being used to build automotive fuel tanks that weigh roughly three kilograms less than plastic tanks.

The material’s advanced properties allow fuel tank weight to be cut nearly in half – an achievement noted by the ISSF, which named the tank made of Outokumpu stainless its 2015 innovation winner. Marked by extremely thin walls – reduced from 1.2 mm to 0.6 mm – and uniquely tailored strength, stainless fuel tanks offer a competitive alternative to plastic tanks. The grade’s uncommon properties, combined with innovation in design, engineering expertise, and manufacturing processes, translate into a fully recyclable fuel tank well suited to the challenges of tomorrow.


Strong yet light

Enhanced safety is another way the stainless tank defies conventional wisdom. It may be lightweight, but the stainless tank acts like a heavyweight. Stainless steel tanks are pressure-resistant and because of an appropriate deformation hardening of the grade have excellent crash properties.

Factors like that, as well as reduced weight and impressive durability, are tangible benefits for manufacturers in an industry that demands competitive materials – or lower investment costs and new ways of thinking.

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Building and infrastructure

Landmark buildings and bridges make a statement. When they’re built of stainless steel, that statement reflects an enduring legacy – a legacy of timeless beauty, exceptional strength and unmatched durability.


Building façade material selection is critically important. The material must be visually appealing, low maintenance and impervious to weather and pollution.

Interior cladding

What other material is versatile enough to cover everything from decorative architectural cladding to stylish, hygienic kitchen surfaces? The cool, metallic shine of stainless steel accents every aspect of our lives.


The Supra range contains stainless steel products designed for highly corrosive environments. Outokumpu Supra range stainless steels have a good resistance to uniform corrosion in many organic and inorganic chemicals. The addition of molybdenum enhances the alloy’s corrosion resistance in many acidic environments.


The Core range contains austenitic and ferritic stainless steel products for mild to medium corrosive environments. The classic 18/8 stainless steel is part of Outokumpu Core range.

Cold rolled coil, strip and sheet

Available for use in a wide variety of applications, Outokumpu cold rolled coil, strip and sheet products are put to work across all industries and markets. 

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