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Q/BQB 310-2019 English PDF (QBQB310-2019)

Q/BQB 310-2019 English PDF (QBQB310-2019)

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Q/BQB 310-2019: Hot-rolled steel sheets and strips for automotive structures

Main technical indicators and test methods
Q/BQB 310-2019
ENTERPRISE STANDARD OF BAOSTEEL CO., LTD.
Main technical indicators and test methods
(Public Statement)
Table of Contents
1 Chemical composition ... 3
2 Mechanical and process properties ... 4
3 Inspection and test ... 5
Main technical indicators and test methods
(Public Statement)
1 Chemical composition
Table 2
Table 3
Designation
Chemical composition a (mass fraction) %
a In order to improve the performance of the steel, other alloying elements can be added as required. At this time, the lower limit of Alt is not required.
Designation Chemical composition
a (mass fraction) %
a One or more alloy elements of Nb, V, Ti can be added to steel, but Nb+V+Ti ???0.22.

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