C7521 C7521 B C7521 W - JIS H 3270-2018

Grade	C7521
Other Names
Corresponding Standard	JIS H 3270-2018 Copper beryllium alloy, phosphor bronze and nickle silver rods, bars and wires
Classification	Copper and Copper Alloys

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	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Hardness HBW
Bar stock (B); 3≤d≤6	1/2 Hard (1/2H)	490~635	HV ≥145
Bar stock (B); 6<d≤13	1/2 Hard (1/2H)	440~590	≥130
Bar stock (B); 3≤d≤6	Hard (H)	550~685	≥145
Bar stock (B); 6<d≤13	Hard (H)	480~620	≥125
Bar (B); 13<d≤25	Hard (H)	440~580	≥115
Bar (B); 25<d≤50	Hard (H)	410~550	≥110
wire (W); 0.4 ≤ d ≤ 5	Annealing (O)	375~520
wire (W); 0.4 ≤ d ≤ 5	1/4 Hard (1/4H)	450~600
wire (W); 0.4 ≤ d ≤ 5	1/2 Hard (1/2H)	520~685
wire (W); 0.4 ≤ d ≤ 5	Hard (H)	≥665

d=diameter or width across flats; unit mm

C7521 Corresponding Standards(Same grade name, different standards)

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