Alloy 7 Z33527 Z33523 Zamak 7 - ASTM B86-2018

Grade	Alloy 7
USA UNS	Z33527
ASTM Specification or Grade	AG40B
Other Names
Old Grade
Corresponding Standard	ASTM B86-2018 Zinc and Zinc-Aluminum (ZA) Alloy Foundry and Die Castings
Classification	Zinc and Zinc Alloys
Density	6.6 g/cm³

Alloy 7 Chemical Element Composition Content (%)

Component	Fe	Si	Mn	Cr	Ni	Cu	Pb	Al	Sn	Mg	Cd	More
Minimum Value	-	-	-	-	0.005	-	-	3.7	-	0.005	-	Zn:Remainder
Maximum Value	0.05	0.035	0.06	0.02	0.02	0.1	0.003	4.3	0.001	0.02	0.002	Zn:Remainder

• When this material is required to conform to ISO 301, the chemical limits for thallium and indium each shall not exceed 0.001 %
• Under the contents of Cr, Si and Mn in the table, there are no harmful effects, so there is no need to analyze these elements.
• For the majority of commercial applications, a copper content up to 0.25 % will not adversely affect the serviceability of these die castings and should not serve as a basis for rejection, unless otherwise specified in
the contract or purchase order between the producer and user

Alloy 7 Mechanical Properties

condition	Tensile Strength σ_b Mpa	Specified Plastic Yield Strength Rp_0.2 Mpa	Fatigue Limit Bending σ-1 Mpa	Elongation or Extension Rate δ %	Hardness HBW	Impact Energy Absorption KV2 J
/	283	Rp0.2: 221 Compressive yield strength Rp0.1：414	Rotary bend 5 × 10⁸ cycles 46.9	13	* 80	58

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