Grade HPb57-4
China ISC T38400
Corresponding Standard GB /T 5231-2012
Designation and chemical composition of wrought copper and copper alloys
Classification Copper and Copper Alloys
HPb57-4 Chemical Element Composition Content (%)
Component Fe Cu Pb Sn Other Total * More
Minimum Value - 56 3.5 - - Zn: Remainder
Maximum Value 0.5 58 4.5 0.5 1.2
"Other individual elements or other totals": The chemical composition includes elements not specified in the table. Analysis should only be conducted if these elements are suspected to be present, or if routine analysis suggests that their content may exceed the prescribed limits.
• The mass fraction of iron in diamagnetic brass is not greater than 0.03%
* This value is the sum of the measured values of the impurity elements listed in the table.
Approximate Comparison Table Brass
China United States International Organization for Standardization France Russia
GB ISC ASTM ISO NF EN/NF GOST
HPb57-4 T38400 57Cu-39Zn-4Pb CuZn39Pb4 CuZn39Pb4 ЛС57-4

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