QAl9-4 T61720 - YS /T 649-2018

Grade	QAl9-4
	T61720
Corresponding Standard	YS /T 649-2018 Extruded rod and bar of copper and copper alloys
Classification	Copper and Copper Alloys
Properties	Strength Corrosion Resistance Weldability

QAl9-4 Chemical Element Composition Content (%)

Component	Fe	Si	Mn	P	Pb	Al	Zn	Sn	Other Total	More
Minimum Value	2	-	-	-	-	8	-	-	-	Cu:余量
Maximum Value	4	0.1	0.5	0.01	0.01	10	1	0.1	1.7	Cu: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.

• The chemical composition of H96 and HSn61-0.8-1.8 rod materials shall comply with the provisions of this standard. The chemical composition of other grade rod materials shall comply with the corresponding provisions of GB/T 5231-2012.

QAl9-4 Mechanical Properties

diameter d mm	Tensile Strength σ_b Mpa	Elongation or Extension Rate δ %	Hardness HBW
d≤120	≥540	≥17	110~190
120＜d≤200	≥450	≥13	110~190

Note: The mechanical properties of rod materials exceeding the specified dimensions shall be provided as actual test values or determined by agreement between the supplier and the customer.

QAl9-4 Corresponding Standards(Same grade name, different standards)

1	GB /T 5231-2012
	QAl9-4 T61720
2	GB /T 5231-2022
	QAl9-4 T61720
3	YS /T 649-2018
	QAl9-4 T61720
4	GB /T 33949-2017
	QAl9-4 T61720

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