ProductsNon Ferrous Alloys

Copper

Copper alloys are metal alloys that have copper as their principal component.

Highlights

Resistance against corrosion
Great conductivity
Waterproof properties
Excellent brazing and soldering properties
Weldable

Copper in its pure, unalloyed state is soft, provides high electrical and thermal conductivity and has excellent corrosion resistance. There are various grades of unalloyed copper, which differ in the amount of impurities they contain. Oxygen-free coppers are used specifically in applications requiring high conductivity and exceptional ductility.

Chemical Composition Of Copper
Material	Normal Composition	Nearest Relevant Composition Specification
		BS: 2870	ISO	JIS
Electrolytic Tough Pitch H.C. Copper	Cu - 99.90% Min. Pb - 0.005% Max Bi - 0.001% Max O2-0.060% Max	C 101	Cu ETP 1337	H 3100 C 1100
Phosphorous Deoxidized Copper(DONA)	Cu - 99.85% Min. P-0.013-0.050%	C106	Cu DHP 1337	H 3100 C 1220

COPPER
TYPICAL MECHANICAL PROPERTIES AS PER : B.S. : 2870

Material

Temper

Tensile Strength N/mm2

Elongation% on 50 mm G.L.

Vickers Hardness
VPN

ISO

JIS

Electrolytic
Tough Pitch H.C. Copper

'O'
M
1/2 H
H

210 Min
210 Min
240 Min
290 Min

35 Min
35 Min
10 Min
-

55 Max
65 Max
70 to 95
90 Min

Cu ETP
ISO : 1337

H 3100
C 1100

Phosphorous
Deoxidized Copper

'O'
M
1/2 H
H

210 Min
210 Min
240 Min
290 Min

35 Min
35 Min
10 Min
-

55 Max
65 Max
70 to 95
90 Min

Cu DHP
ISO : 1337

H 3100
C 1220

'O'>b :	Annealed Condition.
1/2H>v:	Half Hard
H>b:	Hard
* :	Electric Conductivity at 20 Deg. Cel. 100% IACS(For Cu ETP 'O'Temper)

BRASS

Brass is an alloy of copper and zinc; the proportions of zinc and copper can be varied to create a range of brasses with varying properties. Brasses set the standard by which the machinability of other materials is judged and do not become brittle at low temperatures like mild steel. Brass has excellent thermal conductivity and is a first choice for heat exchangers. Disinfection is a unique property of brass, as common pathogens die on its surface within hours, making it ideal for doorknobs and other devices commonly touched by human hands.Brasses are most commonly characterised by their free machining grades by which machining standards are set for all other metals.Brasses can also have high corrosion resistance and high tensile strength. Some Brasses are also suited to hot forging.

Brass Families

There are three main families of wrought alloy brasses:

Copper-Zinc alloys
Copper-Zinc-Lead alloys (Leaded brasses)
Copper-Zinc-Tin alloys (Tin brasses)

SPECIFICATIONS TABLE OF BRASS
Material Description	Standard Specifications	Copper Cu%	Lead Pb%	Tin Sn%	Lron Fe%	Aluminium Al%	Manganese Mn%	Other Elements	Zinc Zn%	Nickle Ni%
FREE CUTTING BRASS TYPE \|	IS : 319/89 BSS : 249 EQUV. : BS 2874/86 CZ121Pb3	56 to 59	2.0 to 3.5	-	0.35 Max	-	-	0.7 Max	Remn.	-
FREE CUTTING BRASS TYPE \|\|	IS : 319/89 EQUV. : 85 2874/86 CZ124	60 to 63	2.5 to 3.7	-	0.35 Max	-	-	0.05 Max	Remn.	-
FREE CUTTING BRASS TYPE \|\|\|	IS : 319/89 BSS : 249 EQUV. : BS 2874/86 CZ124	60 to 63	0.5 to 1.5	-	0.20 Max	-	-	0.5 Max	Remn.	-
FORGING BRASS	IS : 3488/80 BSS : 218 EQUV. : BS 2874/86 CZ122 CuZn42Pb2	56.5 to 60.5	0.6 to 2.0	-	0.30 Max	-	-	0.2 Max	Remn.	-
FORGING BRASS	CuZn40b2	57 to 59	1.5 to 2.5	-	0.40 Max	-	-	0.7 Max	Remn.	-
SPECIAL HIGH TENSILE BRASS FOR VALVES	GRADE I GENERAL	56.5 to 60.0	0.75 to 1.75	-	0.30 Max	-	0.4 to 1.1	0.75 Max Lnci. Fe	Remn.	-
SPECIAL HIGH TENSILE BRASS FOR VALVES	GRADE II I.O.C.	56.5 to 60.0	1.0 to 1.5	-	0.30Max	-	0.2 to 0.5	0.7 0Max Lnci. Fe	Remn.	-
RIVETING BRASS RODS LEAD FREE	BS : 2874/86 CZ109 EQUV. : IS 4170/67 CuZn40	59 to 62	-	-	-	-	-	0.30 Max	Remn.	-
RIVETING BRASS RODS LEAD FREE	IS 4413/81 CuZn37 EQUV. : BS 2873/86 CZ108	62 to 65	0.30 Max	-	0.10 Max		-	0.60 Max	Remn.	-
HIGH TENSILE BRASS RODS	BS : 2874/86 CZ114 EQUV. : BS 250	56.5 to 58.5	0.50 to 1.5	0.2 to 0.8	0.3 to 1.0	0.5 Max	0.5 to 2.0	0.5 Max	Remn.	-
HIGH TENSILE BRASS RODS	BS : 2874/86 CZ115 EQUV.: BS 1001	56.0 to 58.5	0.50 to 1.5	0.62 to 1.1	0.25 to 1.2	0.2 Max	0.3 to 2.0	0.5 Max	Remn.	-
HIGH TENSILE BRASS RODS-I	IS : 320/80	56.0 to 60.5	0.20 to 1.5	0.2 to 1.0	0.2 to 1.25	0.2 Max	0.25 to 2.0	0.5 Max	Remn.	-
HIGH TENSILE BRASS RODS-II	IS : 320/80	56.0 to 61.0	0.5 to 1.5	1.0 Max	0.2 to 1.5	0.3 to 2.0	0.5 to 2.0	0.5 Max	Remn.	-
RIVETING BRASS RODS LEADED	IS : 2704/83 CuZn35Pb1	62.0 to 65.0	0.75 to 1.5	-	0.1 Max	-	-	0.5 Max	Remn.	-
RIVETING BRASS RODS LEADED	IS : 2704/83 CuZn35	63.0 to 68.0	0.02 Max	-	0.1 Max	-	-	0.3 Max	Remn.	-
NAVAL BRASS ROD GRADE-I	IS : 291/77 GR.I EQUV.: BS 2874 CZ112	61.0 to 64.0	0.20Max	1.0 to 1.5	0.1 Max	-	-	0.2 Max	Remn.	-
NAVAL BRASS ROD GRADE-II	IS : 291/77 GR.II	59.0 to 62.0	0.5 to 1.0	0.5 to 1.0	-	-	-	0.2 Max	Remn.	-
NICKEL SLIVER ALLOY RODS	BS : 2874/86 NS101	44.0 to 47.0	1.0 to 2.5	-	0.4 Max	-	0.2 to 0.5	0.3 Max	Remn.	9.0 to 11.0
COPPER ROD FOR GENERAL ENGG PURPOSE	BS : 2874/86 CC 101	REMAINDER	-	-	-	-	-	0.36 to 1.4 (chromium)	-	-

Bronzes

Bronze is an alloy of copper and usually tin as the main additive that is much harder and more brittle than brass. The term "bronze" is sometimes used interchangeably for different types of copper alloys, but the most common typically refers to a mix of about 90% copper and 10% tin in its "pure" form. Common additives to bronze include phosphorous to harden bronze and lead to make bronze more castable. It creates little friction and does not spark, making it ideal for metal on metal contact applications such as gears and for tools used in combustible environments.

Bronze Families

The wrought bronze alloy families are:

Copper-Tin-Phosphorus alloys (Phosphor Bronzes)
Copper-Tin-Lead-Phosphorus alloys (Leaded Phosphor Bronzes)
Copper-Aluminium alloys (Aluminium Bronzes)
Copper-Silicon alloys (Silicon Bronzes)