Designation	Condition	Diameter，mm	Tensile strength N/m㎡	Elongation，%
			Not less than
N6	Y	5-20 ﹥20-30 ﹥30-40	588 539 510	5 6 6
	M	50-30 ﹥30-40	392 343	30 30
	R	32-50 ﹥50-60	343 343	25 20
NCu28-2.5-1.5	Y	5-15 ﹥15-30 ﹥30-40	667 637 588	4 6 6
	Y2	5-20 ﹥20-30	588 539	10 12
	M	5-30 ﹥30-40	441 441	20 20
	R	32-60	392	25
NCu40-2-1	Y	50-20 ﹥20-30	637 588	4 5
	M	5-30	392	25
	R	32-50	Actual measurement	Actual measurement