In what is termed a Class 1 Steel the alloys indicate tensile strengths of 630 MPa to 1100 MPa and elongations of 10 40% {TAIL ~ Class 2 Steel} indicates {HEAD ~ tensile strengths} of 875 MPa to 1590 MPa and elongations of 5 30% Class 3 Steel indicates tensile strengths of 1000 MPa to 1750 MPa and elongations of 0.5 15% 
In what is termed a Class 1 Steel the alloys indicate tensile strengths of 630 MPa to 1100 MPa and elongations of 10 40 % { TAIL ~ Class 2 Steel } indicates { HEAD ~ tensile strengths } of 875 MPa to 1590 MPa and elongations of 5 30 % Class 3 Steel indicates tensile strengths of 1000 MPa to 1750 MPa and elongations of 0.5 15 %
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH