It means using four different grades of high tensile steel for crash protection.
From the newarkadvertiser.co.uk
It is a drama of tensile strength that almost deflects attention from its flaws.
From the time.com
Arrows in a indicate multiple matrix cracks normal to the applied tensile load.
From the nature.com
But he was a supreme draughtsman and print-maker, with a brilliantly tensile line.
From the guardian.co.uk
Tensile and bright, this French cabernet sauvignon-based blend is also refreshing.
From the guardian.co.uk
The Seawolf's high-tensile steel hull will withstand pressures of 100,000 lbs.
From the time.com
Age-dependent residual tensile strains are present in the dura mater of rats.
From the nature.com
Compressive strength for materials is generally higher than their tensile strength.
From the en.wikipedia.org
Concrete has relatively high compressive strength, but much lower tensile strength.
From the en.wikipedia.org
More examples
Of or relating to tension; "tensile stress"; "tensile pull"
Ductile: capable of being shaped or bent or drawn out; "ductile copper"; "malleable metals such as gold"; "they soaked the leather to made it pliable"; "pliant molten glass"; "made of highly tensile steel alloy"
Of or pertaining to tension; Capable of being stretched; ductile
Pertaining to the stress (i.e., tension) resulting from the elongation of an elastic body.
The force pulling an anchor system. This can be caused by wind, ice loads, wall pressures, etc...
Pertaining to forces on a body that tend to stretch, or elongate, the body. A rope or wire under load is subject to tensile forces.
The type of stress the extrados of a tube is under as it stretches, or elongates, during the bending process.
Pertaining to tension. The character of the force which tends to separate, in the most direct manner possible, the adjoining parts of a body.