Andrew is is sorta right. Mercedes likely uses 6160 in it's lorries(large trucks). 6160 is less tough and less flexible than 5160, a spring steel used in most lighter duty trucks and cars, but it is stronger. In fact, you all have it in your vehicles most likely. It can flex thousands of times a day and still work well as a leaf spring for over 20 years. A large trucks needs more memory and a stiffer, less flexible spring, thus they use 6160 - it basically has vanadium added to it VS 5160 wihch adds some strength at the loss of some toughness.
6160, however, is still tougher and more flexible than Ti-6Al-4V Titanium Alloy is. However, Ti-6Al-4V Titanium Alloy is quite strong, and it takes a good heat treat with 6160 to make it stronger than Ti-6Al-4V Titanium Alloy(per a specific volume VS weight).
WYK
6160, however, is still tougher and more flexible than Ti-6Al-4V Titanium Alloy is. However, Ti-6Al-4V Titanium Alloy is quite strong, and it takes a good heat treat with 6160 to make it stronger than Ti-6Al-4V Titanium Alloy(per a specific volume VS weight).
WYK