Grade B19
China ISC T71050
Corresponding Standard GB /T 5231-2022
Designation and chemical composition of wrought copper and copper alloys
Classification Copper and Copper Alloys
B19 Chemical Element Composition Content (%)
Component Fe C Si Mn P S Ni Pb Zn Mg More
Minimum Value - - - - - - 18 - - - Cu:余量
Maximum Value 0.5 0.05 0.15 0.5 0.01 0.01 20 0.005 0.3 0.05
Approximate Comparison Table Wrought Cupronickel
China Japan United States International Organization for Standardization France Russia United Kingdom
GB ISC JIS ASTM UNS ISO Numerical Grade NF EN/NF GOST Commercial Grade BS EN/BS
B19 T71050 C7101
C71000
80Cu-20Ni C71000 CuNi20 C71000 CuNi20
C71000
МН19 CN104 C71000
B19 Corresponding Standards(Same grade name, different standards)

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