Q/BQB 409-2020 English PDF (QBQB409-2020)

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Q/BQB 409-2020: Cold-rolled steel sheet and strip for hot-stamping use
Q/BQB 409-2020
BQB
ENTERPRISE STANDARD OF
BAOSHAN IRON AND STEEL CO., LTD
Replacing Q/BQB 409-2018
Cold-Rolled Steel Sheet and Strip for Hot-Stamping Use
ISSUED ON: AUGUST 25, 2020
IMPLEMENTED ON: OCTOBER 10, 2020
Issued by: Baoshan Iron and Steel Co., Ltd.
Table of Contents
Foreword ... 3
1 Classification and Code ... 4
2 Chemical Compositions ... 5
3 Mechanical Properties ... 5
4 Inspection and Test ... 6
Appendix A (Informative) Comparison List of Similar Designations between
this Standard and Relevant Domestic and Foreign Standards ... 7
Foreword
This Standard was drafted as per the rules specified in GB/T 1.1-2009 Directives for
Standardization – Part 1: Structure and Drafting of Standards.
This Standard was compiled by reference of EN 10083-3:2006.
This Standard replaced Q/BQB 409-2018.
Compared with Q/BQB 409-2018, the major modified contents of this Standard are as
follows:
--- Modify the definitions of hot stamping and steel for hot stamping use;
--- Add the normative reference of GB/T 20124;
--- Add the designations of hot stamping steel HC340/460HS, HC370/550HS,
HC800/1000HS, HC1100/1700HS, HC1200/1800HS;
--- Increase the requirement of cold bending angle of hot stamping steel after hot
stamping;
--- Delete the original Appendixes B and C.
The Appendix A of this Standard is informative.
This Standard was proposed by Manufacturing Management Department of Baoshan
Iron and Steel Co., Ltd.
This Standard shall be under the jurisdiction of Manufacturing Management
Department of Baoshan Iron and Steel Co., Ltd.
Drafting organization of this Standard: Manufacturing Management Department of
Baoshan Iron and Steel Co., Ltd.
Revising and drafting staff of this Standard: Yuan Min.
The historical editions replaced by this Standard are as follows:
--- Q/BQB 409-2014, Q/BQB 409-2018.