Free Cutting Brass Wire

Chemical Requirements		Grade I		Grade II		Grade III
Copper		56.0 – 59.0%		60.0 – 63.0%		60.0 – 63.0%
Lead		2.0 to 3.50%		2.50 – 3.70%		0.50 – 1.50%
Iron		0.35% max		0.35% max		0.20% max
Total Imp. Excl. Iron		0.70% max		0.50% max		0.50% max
Zinc		Remainder		Remainder		Remainder
Physical Properties		Grade I		Grade II		Grade III
Condition	Size	T.S. MPA	EL% Min	T.S. MPA	EL% Min	T.S. MPA	EL% Min
Annealed (O)	6-25 25-50 50 above	345 315 285	12 17 22	355 305 275	15 20 25	315 285 255	22 27 32
Half-Hard (HB)	6-12 12-25 25-50 50 above	405 395 355 325	4 6 12 17	395 385 345 315	7 10 15 20	355 345 305 285	8 12 22 27
Hard (HD)	6-12 12-25	550 485	– 4	550 485	– 4	460 400	– 4
Fabrication Properties		Grade I		Grade II		Grade III
Capacity for being
Cold worked		Poor		Poor		Poor
Hot formed		Fair		Fair		Fair
Machinability Rating		100%		90%		90%
Suitability for soldering		Excellent		Excellent		Excellent
Suitability for Brazing		Good		Good		Good
Uses
Precision Components, Hardware, Hinges, Lock Bodies, Screws, Nuts & Bolts
Gr II : Gear, Pinions, Precision, Automobile, Electronic Parts
Gr III : Precision Components Machining with Riveting Operation

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