C7521 C7521 R C7521 P - JIS H 3110-2018 - H2ABC

中文版

Grade	C7521
Other Names
Corresponding Standard	JIS H 3110-2018 Phosphor brozne and nickle silver sheets, plates and strips
Classification	Copper and Copper Alloys
Properties	Corrosion Resistance Fatigue Resistance

C7521 Chemical Element Composition Content (%)

Component	Fe	Mn	Ni	Cu	Pb	More
Minimum Value	-	-	16.5	62	-	Zn:余量
Maximum Value	0.25	0.5	19.5	66	0.03	Zn:余量

C7521 Mechanical Properties

condition	Mark	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Elongation or Extension Rate δ %	Hardness HBW
Plate (P), strip (R); 0.1≤t≤5	C7521 P-O,C7521 R-O	Annealing (O)	≥375	≥20	-
Plate (P), strip (R); 0.1≤t≤5	C7521 P-1/2H,C7521 R-1/2H	1/2 Hard (1/2H)	440~570	≥5	HV 120~180
Plate (P), Strip (R); 0.1≤t<0.15	C7521 P-H,C7521 R-H	Hard (H)	540~640	-	150~210
Plate (P), Strip (R); 0.15≤t≤5		Hard (H)	540~640	≥3	150~210
Plate (P), strip (R); 0.1≤t≤5	C7521 P-EH,C7521 R-EH	Extra Hard (EH)	≥610	-	≥185

C7521 Corresponding Standards(Same grade name, different standards)

1	JIS H 3110-2018
	C7521 C7521 R C7521 P
2	JIS H 3270-2018
	C7521 C7521 B C7521 W

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