Q/BQB 420-2021: Hot-dip galvanizing/zinc-iron alloy/zinc-magnesium alloy coated steel sheet and strip

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Scope

Table C.1
Table C.2
Table C.3
Designation
Chemical composition (melting analysis) % (mass fraction) no more than
a Nb is allowed to replace Ti; the total content of Nb and Ti is no more than 0.30% at this time.
Designation Chemical composition (melting analysis) % (mass fraction) no more than
a Ti and Nb can be added individually or in combination. V and B can also be added; and the total content of theses alloy elements is ≤ 0.22%.
Designation
Chemical composition (melting analysis) % (mass fraction)
No more
than
Si
No more
than
Mn
No more
than
No more
than
No more
than
Alt
No less
than
Ti a
No more
than
Nb a
No more
than

Basic Data

Standard ID	Q/BQB 420-2021 (Q/BQB420-2021)
Description (Translated English)	Hot-dip galvanizing/zinc-iron alloy/zinc-magnesium alloy coated steel sheet and strip
Sector / Industry	Chinese Industry Standard
Classification of Chinese Standard	QBQ
Word Count Estimation	11,11
Issuing agency(ies)	Baoshan Iron and Steel Co., Ltd.