Steel grades are legion. Fascinating in there making is minuscule amounts of this and that added to the charge changing properties quite radically.
Structural steel...wide flange beams, channel shapes along with angle sections (and others) fall under ASTM A36. Fairly moderate requirements for that standard: 36,000 lb minimum tensile yield strength per square inch.
The yield strength is defined as 2% elongation of given cross section. If a 1” square bar of A36 stretches beyond 10.2” under a 36,000# test pull, then it does not comply with A36.
Steel is utterly marvelous at withstanding tension loading; not so good with the compression side of the equation.
The stainless steel showing up on the street likes to rust. It is not stainless.
All steel have close to the same modulus of elasticity (Young's modulus), regardless of its tensile strength. The round number for that, for steel, is 30 million (PSI). Not that it would hold, but that value means that if a one inch long by one square inch section was subjected to a 30 million pound load, it would deflect one inch. A one square inch section of A36 would stretch the same as a hardened tool steel of 200,000 psi UTS, if both were subjected to a 36,000 pound load -- about 0.0012 inch (30 million divided by 36 thousand), per inch of bar length. Your 10 inch long test specimen would be 10.012 inch long.
On this point, I am speculating and working from memory - When "yield" and elongation are stated as correlated, the correlation is the amount of stress that results in 2% permanent strain/elongation. Not all steel parts have elongation/ductility, some fail without much deformation in advance of reaching UTS.
Steel has approximately the same mechanical properties in compression as it does in tension, contrasted with concretes which are great in compression and weak in tension. The limiting factor for compression loading is often column/buckling, not yield.