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QSTE420TM automotive steel properties and application

Posted:2021-06-15 17:36:28

QSTE420TM steel executive standard: Q/BQB-310
Delivery status: pickling, the specific delivery status should be indicated in the mill test certificate.

QSTE420TM automotive steel chemical composition:
Carbon C: ≤0.12
Silicon Si: ≤0.50
Manganese Mn: ≤1.50
Sulfur S: ≤0.025
Phosphorus P: ≤0.030
All aluminum Alt≥0.015
Niobium Nb: ≤0.09
Vanadium V: ≤0.20
Titanium Ti: ≤0.15

QSTE420TM automotive steel mechanical properties:
QSTE420TM automobile steel tensile strength σb(MPa): 480-620
QSTE420TM automotive steel yield strength σ0.2 (MPa): ≥420
QSTE420TM automobile steel elongation δ5(%): ≥16
QSTE420TM automotive steel sample size: the sample blank size is less than 3.0mm

QSTE420TM automotive steel applications:
QSTE420TM automotive steel is used for automotive structural parts such as automotive beams and beams that require good cold forming properties and have higher or high strength requirements.