Leaded Brass Hollow Rods

We are manufacturer of brass hollow rods and brass hollow bar with wide range of inner and outer diameters, alloys & grades. These rods and bars are said to be the best alternative for machined parts which has bore like cable glands, brass sleeves, valves and various other brass components which has bore in its center. Being hollow, these rods need not require to make bore as done in regular brass rods so it reduces the production time which would have been wasted in making bore, tooling costing and also scrap. As brass hollow rods makes less scrap compared to brass extrusion rods, raw material required as input is also reduced and which in-turn reduce the working capital also.

These hollow rods are mainly used in manufacturing high speed machining components with a large hole in it, which consumes large production time in making center hole and turning operations.

Industry using free cutting hollow rods are Precision Components, hardware, cable glands, automobile components and electronic parts.

Technical Specifications :

Specification :
Free Cutting Hollow Rods	ASTM B 455 B 16 C 38500 C 36000 BS 2874 CZ - 121Pb3 or CZ124 IS319 Grade I/ II/ III JIS3250 H C3604 or C3602

GRADE-I
Chemical Requirements
Copper	56 - 59%
Lead	2.0 to 3.50%
Iron	0.35% max
Total Imp. Excl. Iron	0.70% max
Zinc	Remainder

Physical Properties
Condition	Size	T.S. MPA	EL% Min
Annealed (O)	"6-25 25-50 50 above"	"345 315 285"	"12 17 22"
Half Hard (HB)	"6-12 12-25 25-50 50 above"	"405 395 355 325"	"4 6 12 17"
Hard (HD)	"6-12 12-25"	"550 490"	"- 4"

Uses : Precision Components, Hardware, Hinges, Lock Bodies, Screws, Nuts & Bolts.

GRADE-II
Chemical Requirements
Copper	60.0 - 63.0%
Lead	2.50 to 3.70%
Iron	0.35% max
Total Imp. Excl. Iron	0.50% max
Zinc	Remainder

Physical Properties
Condition	Size	T.S. MPA	EL% Min
Annealed (O)	"6-25 25-50 50 above"	"355 305 275"	"15 20 25"
Half Hard (HB)	"6-12 12-25 25-50 50 above"	"395 385 345 315"	"8 12 22 27"
Hard (HD)	"6-12 12-25"	"550 485"	"- 4"

Uses : Gear, Pinions, Precision, Automobile, Electronic Parts.

GRADE-II
Chemical Requirements
Copper	60.0 - 63.0%
Lead	0.50 to 1.50%
Iron	0.20% max
Total Imp. Excl. Iron	0.50% max
Zinc	Remainder

Physical Properties
Condition	Size	T.S. MPA	EL% Min
Annealed (O)	"6-25 25-50 50 above"	"315 285 255"	"22 27 32"
Half Hard (HB)	"6-12 12-25 25-50 50 above"	"355 345 305 285"	"8 12 22 27"
Hard (HD)	"6-12 12-25"	"460 440"	"- 4"

These hollow rods are mainly used in manufacturing forged components and pressing materials and hence used mainly in making valve components..

Industry using forging hollow rods are forged components, industrial valves, defense components, watch case and automobile valves components.

Technical Specifications :

Specification :
Forging Hollow Rods	ASTM B 124 C37700 BS 2874 CZ 122 IS 3488 Forging Brass

Chemical Requirements	CuZn42Pb2	"CuZn40Pb2 "
Copper	56.5 - 60.0%	"57.0 - 59.0% "
Lead	0.60 to 2.0%	"1.5 to 2.5% "
Iron	0.30% max	"0.40% max "
Total Imp. Excl. Iron	0.20% max	0.70% max
Zinc	Remainder	Remainder

Physical Properties
Tensile Strength	380 Mpa Min	"40 kg/mm2 Min. "
Elongation %	25% Min	"18% Min. "
Izod Value	-	2.0 KJ min

Uses : Forged Components, Industrial Valves, Defense components, Watch Case, Automobile Valves Components.

As these hollow rods highly resistance against corrosion and high in strength they are used and making marine components and sanitary parts.

Industry using high tensile hollow rods are Marine Industry and sanitary parts industry.
Technical Specifications :

Specification :
High Tensile Hollow Rods	IS 320 HT1 or HT2 BS 2874 CZ114 or CZ115 JIS 3250H C6782 or C6783

Chemical Requirements	HT1	HT2
Copper	56.0 - 60.0%	"56.0 - 61.0% "
Lead	0.20 to 1.50%	"0.50 to 1.50% "
Iron	0.20 to 1.25%	"0.20 to 1.50% "
Tin	0.20 to 1.0%	"1.0% max "
Aluminium	0.2% max	"0.30 to 2% "
Manganese	0.25 - 2.0%	"0.50-2.0% "
Total Imp.	0.50% max	"0.50% max "
Zinc	Remainder	Remainder

Physical Properties
Condition	Size	T.S. MPa	EL% Min	T.S. MPa	EL% Min
As manufactured	All Size	430 min	20%	460 min	20%
Cold-worked & Stress	Oct-40	480 min	12%	520 min	12%
Relieved	40 above			500 min	15%

Uses : HT1 is suitable for Soldering and Ht2 is suitable for Machining.