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Q/BQB 306-2019 English PDF (QBQB306-2019)

Q/BQB 306-2019 English PDF (QBQB306-2019)

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Q/BQB 306-2019: Hot-rolled steel sheets and strips for automotive beam

Main Technical Indicators and Test Methods (Public Statement)
Q/BQB 306-2019
BQB
ENTERPRISE STANDARD OF
BAOSHAN IRON AND STEEL CO., LTD
Hot-rolled steel sheets and strips for automotive beam
Table of Contents
1 Chemical Compositions ... 3
2 Mechanical and Process Properties ... 4
3 Inspection and Test ... 5
Main Technical Indicators and Test Methods
(Public Statement)
1 Chemical Compositions
Table 2
Table 3
a In order to improve the steel properties, add other alloy elements as required; at this time, the lower limit of Alt is not required. Designation Chemical compositions
a (mass fraction)
Designation Chemical compositions
a (mass fraction)
a One of or several alloy elements among Nb, V, Ti can be added to the steel, but Nb+V+Ti???0.22.

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