Indigo Metalloys (p) Ltd

Indigo Metalloys Private Limited is the destination where you can avail precision Metal Products under one roof.

Technical Specification Copper Alloy Tubes


Chemical Composition Mechanical Properties

Product Application Areas :
  • General Engineering
  • Furniture
  • Architectural
  • Grill Work

63/37 Brass Tubes

C2700=65/37 *C2800=60/40

70/30 Brass Tubes

Product Application Areas :
  • Sugar Industry
  • Hand Pumps
  • Plumbing
  • Furniture
  • General Engineering
  • Ammunitions And it is Commonly known as " Sugar Brass Tubes"


Admiralty Brass Tubes

Product Application Areas :
  • Heat Exchangers
  • Refineries Power Plants
  • Desalination Plants
  • Ship Building & Ship Repairs
  • Condensers
  • Ferrules
  • Distillers


Characteristics : A Copper Zinc Alloy containing tin an small amount of arsenic which is added as an inhibitor against dezincification. The pressure of Tin imparts to the alloy good corrosion resistance in a moderately polluted river water and clean sea water, either stagnant or slow moving (up to about 2 mtrs/sec.). The most common and wrought form of tube for heat exchange equipment.

Guide to the Selection of Tube Material :
  • Clear, River, Lake or Canal Water. :
    • Dissolved salts more than from 2000 ppm.
    • Suspended solids more than 25 ppm.
    • H2S or Ammonia is less than 1 ppm.
    • Choloride less than 20 ppm.
    • For temperature more than 200***C and less than 450oC Permissible average velocity of water 2.0-2.5 meters/sec.

Aluminium Brass Tubes

Product Application Areas :
  • Heat Exchangers
  • Refineries Power Plants
  • Desalination plants
  • Ship Building & Ship
  • Repairs
  • Condensers
  • Ferrules
  • Distillers.


Characteristics : A Copper Zinc Alloy containing tin an small amount of arsenic which is added as an inhibitor against dezincification. Inhibited Aluminium Brass resists the action of high velocity salt and brackish water and is commonly used for condenser tube. the outstanding characteristics of Aluminium Brass is the high resistance to impingement attack. Tubes of this alloy recommended for use in marine and land power stations where cooling water velocity are high and where inhibited admiralty brass has failed from impingement

Guide to the Selection of Tube Material :

Sea Water :
  • Dissolved salts more than from 2000 ppm.
  • Suspended solids more than 30 ppm.
  • H2S or Ammonia is less than 1 ppm. Permissible average velocity of water 2.0-2.5 meters/sec.

  • 70/30 Cupronickel Tubes :

    Product Application Areas :
    • Heat Exchangers
    • High Capacity Power Plants
    • Ship Building & Ship Repairs
    • Condensers
    • Offshore Oil Rigs
    • Distiller Tubes
    • Evaporators
    • Ferrules

    • *12% Wall thickness upto 1.21mm,
    • Including : 15% wall thickness over 1.21mm

    Characteristics : A Copper Nickel alloy having small amount of iron and manganese to improve corrosion resistance in high velocity (from 1 to about 4 mts/sec.) waters, including sea water. The alloy is relatively insensitive to stress corrosion. It has good cold and hot working properties and is readily weldable.

    Guide to the Selection of Tube Material :
    • Dissolved salts from 1000 ppm.
    • Absence of abrasive suspended solids.
    • Polluted with H2S and Ammonia. Permissible average velocity of water 3-4 meters/sec.

    90/10 Cupronickel Tubes

    Product Application Areas :
    • Heat Exchangers
    • Application
    • Refineries
    • Power Plants
    • Desalination Plants
    • Ship Building & Ship Repairs
    • Condensers
    • Offshore Oil rings
    • Car Braking System etc...


    Characteristics : This Alloy has very high erosion and corrosion resistance. It has very high weldability, easy for installation and high anti fouling properties against sea microorganisms. Relatively high iron content provides better impingement attack resistance. The alloy is unique to stress corrosion cracking.

    Guide to the Selection of Tube Material :
    • Dissolved salts more than from 1500 to 3000 ppm.
    • Suspended soilids more than 25 ppm. C) H2S or Ammonia is less than 1 ppm. Permissible average velocity of water 2.5-2.7 meters/sec



    Image 01

    Image 01

    Image 02

    Image 02

    Image 03

    Image 03

    Image 04

    Image 04

    Image 05

    Image 05

    Image 06

    Image 06