QSTE420TM chemical composition

Chemical composition (heat analysis)%
C: ≤ 0.12
Si: ≤ 0.35
Mn: ≤ 1.50
P: ≤ 0.03
S: ≤ 0.025
Ti: ≤ 0.22
Nb: ≤ 0.09
Ait: ≥ 0.01
The sample test (tensile, bending, sample is laterally; Mpa).
Yield: ≥ 420
Tensile :480-620
Extension: ≥ 21
Use: the grade series of fine-grained steel with good cold formability. For applications requiring good cold formability and

High or high strength requirements for automobile frames, beams and other structural parts.