HAl77-2 77-2铝黄铜 - GB /T 8890-2007

Grade	HAl77-2
ASTM Specification or Grade	C68700
Other Names
Corresponding Standard	GB /T 8890-2007 Seamless Copper Alloy Tube for Condenser and Heat-Exchanger
Classification	Copper and Copper Alloys

HAl77-2 Chemical Element Composition Content (%)

Component	Fe ^①	Cu ^②	As	Pb	Al	Other Total	More
Minimum Value	-	76	0.02	-	1.8	-	Zn:余量
Maximum Value	0.06	79	0.06	0.07	2.5	0.3	Zn:余量

"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.

HAl77-2 Mechanical Properties

condition	Mark	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Elongation or Extension Rate δ %
Seamless straight pipe	HAl77-2M	Soft (M)	≥345	≥50
Seamless straight pipe	HAl77-2Y2	Half Hard (Y2)	≥370	≥45

HAl77-2 Corresponding Standards(Same grade name, different standards)

1	GB /T 5231-2012
	HAl77-2 C68700
2	GB /T 5231-2022
	HAl77-2 C68700
3	GB /T 5231-2001
	HAl77-2 77-2铝黄铜 C68700
4	YS /T 649-2018
	HAl77-2 C68700
5	GB /T 8890-2007
	HAl77-2 77-2铝黄铜 C68700

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!