Reliance Technical

               


Brass Round Square Hex and Flat Bars


Brass Foils


Brass Sheets

About Brass:
Brass is the term used for alloys of copper and zinc in a solid solution. The amount of zinc varying from 5 to 45 percent to create a range of brasses each with unique properties. Note that in comparison bronze is principally an alloy of copper and tin. Despite this distinction, some types of brasses are called bronzes.
 

A decorative brass paperweight, left, along with zinc and copper samples.
A decorative brass paperweight, left, along with zinc and copper samples.
 

Brass has a yellow colour, somewhat similar to gold. It is relatively resistant to tarnishing, and is often used as decoration. Brass has been known to man since prehistoric times, long before zinc itself was discovered. It was produced by melting copper together with calamine, a zinc ore. During this process, the zinc is extracted from the calamine and mixes with the copper. Pure zinc, on the other hand, is too reactive to have been produced by ancient metalworking techniques.

Properties
The malleability and acoustic properties of brass have made it the metal of choice for brass musical instruments such as the trombone, tuba, trumpet and euphonium. Even though saxophones and harmonicas are made out of brass, the saxophone is a woodwind instrument and the harmonica is a Free reed aerophone. In organ pipes designed as "reed" pipes, brass strips are used as the "reed". It has higher malleability than copper or zinc.
By varying the proportions of copper and zinc, the properties of the brass can be changed, allowing hard and soft brasses. The relatively low melting point (900–940 °C depending on composition) of brass and its flow characteristics make it a relatively easy material to cast.
Today almost 90% of all brass alloys are recycled. Brass scrap is collected and transported to the foundry where it is melted and recast into billets. Billets are later heated up and extruded into the right form and size.
Aluminium makes brass stronger and more corrosion resistant. Aluminium also causes a highly beneficial hard layer of aluminium oxide (Al2O3) to be formed on the surface that is thin, transparent and self healing. Tin has a similar effect and finds its use especially in sea water applications (naval brasses). Combinations of iron, aluminium, silicon and manganese make brass wear and tear resistant. A well known alloy used in the automotive industry is 'LDM C673', where the right combination of manganese and silicon lead to a strong and resistant brass.
The so called dezincification resistant (DZR) brasses, like alloy 'LDM G563' (known for its brand name 'Enkotal'), are used where there is a large corrosion risk and where normal brasses do not meet the standards. Applications with high water temperatures, chlorides present or deviating water qualities (soft water) play a role. DZR-brass is excellent in water boiler systems. This brass alloy must be produced with great care, with special attention placed on a balanced composition and proper production temperatures and parameters to avoid long-term failures. Drunen, Netherlands, has the only active production facility which makes these high grade brass alloys.
Brass was used to make fan blades, fan cages and motor bearings in many antique fans that date before the 1930s.

Brass types
• Admiralty brass contains 30% zinc and 1% tin which inhibits dezincification in most environments.
• Alpha brasses (Prince's metal), with less than 35% zinc, are malleable, can be worked cold, and are used in pressing, forging, or similar. They contain only one phase, with face-centered cubic crystal structure.
• Alpha-beta brass (Muntz metal), also called duplex brass, is 35-45 % zinc and is suited for hot working. It contains both α and β' phase; the β'-phase is body-centered cubic and is harder and stronger than α. Alpha-beta brasses are usually worked hot.
• Aluminium brass contains aluminium, which improves its corrosion resistance.
• Arsenical brass contains an addition of arsenic and frequently aluminium and is used for boiler fireboxes.
• Beta brasses, with 45-50 % zinc content, can only be worked hot, and are harder, stronger, and suitable for casting.
• Cartridge brass is a 30% zinc brass with good cold working properties.
• Common brass, or rivet brass, is a 37% zinc brass, cheap and standard for cold working.
• High brass, contains 65% copper and 35% zinc, has a high tensile strength and is used for springs, screws, rivets.
• Leaded brass is an alpha-beta brass with an addition of lead. It has excellent machinability.
• Low brass is a copper-zinc alloy containing 20% zinc with a light golden color, excellent ductility and is used for flexible metal hoses and metal bellows.
• Naval brass, similar to admiralty brass, is a 40% zinc brass and 1% tin.
• Red brass is an American term for CuZnSn alloy known as gunmetal.
• White brass contains more than 50 % zinc and is too brittle for general use.
• Yellow brass is an American term for 33% zinc brass.
Brass can be used for Cryogenic containers
 

 List of Alloys

Alloy

Description
(common name)

South African
(SABS)

British
(BS)

German
(DIN)

American
(ASTM/UNS)

Japanese
(JIS)

International
(ISO)

101

high speed machining brass

CuZn39Pb3

CZ121Pb3

CuZn39Pb3

C38500

C3603

CuZn39Pb3

103

USA high speed machining brass

CuZn36Pb3

CZ124

CuZn36Pb3

C36000

C3601

CuZn36Pb3

110

extra high leaded machining brass

CZ121Pb4

C38510

CuZn38Pb4

202

machining brass for sections

CuZn43Pb2

CZ130

C3800

CuZn43Pb2

205

machining brass for architectural sections

CZ129

C3771

CuZn39Pb1

207

ductile machining brass

CuZn36Pb1

CZ119 / CZ131

CuZn36Pb1,5

C34000 / C35000

CuZn37Pb2

210

machining brass - dezincification resistant

CuZn36Pb2

CZ132

212

machining brass for complex sections

CuZn44Pb2

C3800

213

hot stamping brass - dezincification resistant

CuZn36Pb2

CZ132

217

US hot stamping brass

CuZn39Pb2

CZ128

CuZn39Pb2

C37700

C3771

CuZn38Pb2

218

European hot stamping brass

CuZn39Pb2

CZ122

CuZn40Pb2

C37710

C3603

CuZn40Pb2

303

cold heading brass

CuZn37

CZ108

CuZn37

C27400

C2700

CuZn37

304

severe cold heading brass1

CZ107

C27000

C2700

CuZn35

307

cartridge brass

CuZn30

CZ106

CuZn30

C26000

C2600

CuZn30

308

80/20 gilding metal

CuZn20

CZ103

CuZn20

C24000

C2400

CuZn20

310

85/15 gilding metal

CuZn15

CZ102

CuZn15

C23000

C2300

CuZn15

401

naval brass

CuZn38Sn1

CZ112

CuZn38Sn1

C46420

C4622

CuZn38Sn1

404

naval brass medium leaded

CZ134

C48500

505

high tensile brass - soldering quality

CZ115

CuZn40Mn1Pb

C67600

CuZn39AlFeMn

506

high tensile brass

CuZn39AlFeMn

CZ114

CuZn40Mn1Pb

C68600

CuZn39AlFeMn

513

high tensile brass

CZ116

604

aluminium bronze

CA103

CuAl9Ni3Fe2

606

aluminium nickel bronze

CA104

CuAl10Ni5Fe4

CuAl10Ni5Fe4

701

leaded nickel brass

NS101

CuNi12Zn30Pb1

C79800

804

low fuming bronze

C2C

L-CuZn39Sn

C68100

805

low melting brazing alloy

CZ2

 

MMC strengthens its commitment with the 40 yrs. experience of the owner in Indian Metal Market .

We have all the regular sizes of Brass Rods / Flats in ready stock.

 

 

Copper & Copper Alloy (Brass)
Rod, Section, Coil & Hollow

Range of Products

Rods

:

Dia

 

:

1.5

mm

to

127mm

Bars

:

Square : A/F

Dimension

:

3

mm

to

60mm

 

:

Hex : A/F

Dimension

:

3

mm

to

75mm

Flats/Strips

:

Thickness

(Minimum)

:

2

mm

 

 

 

:

Width

(Maximum)

:

100

mm

 

 

Sections

:

Circumscribed Dia

(Maximum)

:

90

mm

 

 

Coils

:

Dia

 

:

1.5

mm

to

10mm

Hollows

:

Bore

(Minimum)

:

15

mm

 

 

Tubes

:

Wall Thickness

(Minimum)

:

0.5

mm

(25 SWG)

 

 

Weight of Brass Rods in
Kilo Grams per meter

Round Rods

Weight per meter = (AxAx0.006676)kg.

Square Rods

Weight per meter = (AxAx0.008500)kg.

Rectangle Rods/Strips

Weight per meter = (AxBx0.008500)kg.

Hex Rods

Weight per meter = (AxAx0.007361)kg.

NOTE : Weight of Copper Rods = 1.0517 x The Corresponding Weight of Brass Rod

 

1 Meter=100 Cms=1000 mm=39.37 Inches=3.28 Feet

 

 

We make all the qualities of extruded brass according to IS-BS specifications as per customers requirement.

MATERIAL
DESCRIPTION

STANDARD SPECIFICATIONS

COPPER
Cu%

LEAD
Pb%

TIN
Sn%

IRON
Fe%

ALUMINIUM
Ai%

MANGANESE
Mn%

OTHER ELEMENTS

ZINC
ZN%

NICKLE
N%

FREE CUTTING BRASS TYPE I

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 II

IS : 319/89
EQUV.: BS 2874/86 CZ124

60 TO 63

2.5 to 3.7

-

0.35 Max

-

-

.05 Max

Remn.

-

FREE CUTTING BRASS
TYPE III

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 60.0

0.6 to 2.0

-

0.30 Max

-

-

0.2 Max

Remn.

-

CuZn40Pb2

57 TO 59

1.5 to 2.5

-

0.40
Max

-

-

0.7 Max

Remn.

-

SPECIAL HIGH TENSILE BRASS FOR VALVES

GRADE 1 GENERAL

56.5 TO 60.0

0.75 to 1.75

-

0.30
Max

-

0.4 to 1.1

0.75 Max incl.Fe

Remn.

-

GRADE II I.O.C.

56.5 TO 60.0

1.0 to 1.5

-

0.30 Max

-

0.2 to 0.5

0.70 Max incl.Fe

Remn.

-

RIVETING BRASS RODS LEAD FREE

BS : 2874/86 CZ109
EQUV.: IS 4170/67 CuZn 40

59 TO 62

-

-

-

-

-

0.30 Max

Remn.

-

IS : 4413/81
CuZn37
EQUV.: BS/2873/86
CZ 108

62-6 5

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

0.5 to 1.5

0.2 to 0.8

0.3 to 1.0

1.5 Max

0.5 to 2.0

0.5 Max

Remn.

-

BS: 2874/86 CZ115
EQUV.: BS 1001

56.0 TO 58.5

0.5 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 60.0

0.2 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

556.0 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.

-

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.: BS2874 CZ 112

61.0 TO 64.0

0.20 Max

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

-

-

-

0.2Max

Remn.

-

NICKEL SILVER ALLOY RODS

BS:2874/86 NS 101

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 GENERTAL ENGG PURPOSE

BS:2874/86
CC 101

REMAINDER

-

-

-

-

-

0.36 to 1.4 (chromium)

-

-