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63/37 Brass Pipes – Supplier, Stockist
and Exporter in Mumbai, India

63/37 Yellow Brass (UNS C27400) Seamless Pipes to ASTM B135 / ASME SB135

63/37 brass pipes are made from yellow brass, also called common brass (UNS C27400): a copper-zinc alloy with about 63% copper and 37% zinc. The high zinc content gives the pipe good strength, while the alloy remains easy to bend, flare and cold-form. That combination makes 63/37 brass a practical, economical choice for plumbing, general engineering and decorative work.


Table of Content



Properties and Uses of 63/37 Brass Pipes

63/37 brass has good corrosion resistance in the atmosphere and in fresh water, good electrical and thermal conductivity, and excellent cold workability. It is widely used for plumbing lines, radiator and heater components, lamp and electrical fittings, hardware and architectural trim.

Where not to use it: 63/37 brass is not recommended for seawater, brackish water or ammonia-bearing service, where it is prone to dezincification and stress-corrosion cracking. For condensers and heat exchangers in those conditions, choose Admiralty brass pipes, aluminium brass pipes or cupro-nickel pipes.

Testing, Documentation and Packaging

Every lot of 63/37 brass pipes is inspected before dispatch. Typical tests include chemical analysis / PMI, tensile and hardness testing, flaring and flattening tests, hydrostatic or eddy-current testing, and dimensional inspection. Third-party inspection can be arranged on request.

Pipes are supplied with a mill test certificate to EN 10204 3.1, together with the raw-material report and inspection reports. For export orders, pipes are wrapped in poly bags and packed in fumigated wooden cases, crates or pallets, with a fumigation certificate included.


63/37 Brass Pipes

Standard Specification for 63/37 Brass Pipes

Specification

ASTM B135 / ASME SB135 (seamless)

Grade

63/37 Yellow Brass, UNS C27400

Outer Diameter

3.35 mm to 101.6 mm OD (15 NB to 150 NB)

Wall Thickness

0.3 mm to 50 mm

Length

Single random, double random or cut length (1 m – 6 m, or as required)

Shapes

Round and square
Application industries

Types of 63/37 Brass Pipes

63/37 Brass Seamless Pipes

63/37 Brass Seamless Pipes

Made to ASTM B135 / ASME SB135. Uniform wall, smooth bore and good pressure capacity for plumbing and general engineering lines.
63/37 brass welded pipes

63/37 Brass Welded Pipes (on request)

An economical option for structural, decorative and low-pressure uses. Supplied against the customer\'s specification.

Chemical Composition

Grade Cu Fe Pb Zn
Min/Max 61.0 – 64.0 0.05 max 0.10 max Rem.
Nominal 62.5 - - 37.5

Mechanical Properties

Density Tensile Strength Yield Strength (0.2%Offset) Elongation
8.47 g/cm³ 280 MPa min 180 MPa 40 %

Available Forms and Sizes


Seamless round brass pipesSquare brass pipes
Thin-wall 63/37 brass pipesThick-wall 63/37 brass pipes
Metric and NB sizesCut-to-length pipes

Applications of 63/37 Brass Pipes


  •   Plumbing and water supply lines
  •   Radiator and heater components
  •   Lamp, lighting and electrical fittings
  •   Hardware and fasteners
  •   Architectural and decorative trim
  •   General engineering and instrumentation
  •   Automotive components
  •   HVAC and fresh-water heat transfer
Industries using 63/37 brass pipes

Frequently Asked Questions

What is 63/37 brass?
63/37 brass, also called yellow brass or common brass (UNS C27400), is a copper-zinc alloy with about 63% copper and 37% zinc. It combines good strength with excellent cold-working properties.

Which specification covers 63/37 brass pipes?
Seamless 63/37 brass pipes and tubes are supplied to ASTM B135 and its ASME equivalent SB135.

Can 63/37 brass pipes be used in seawater?
63/37 brass is not recommended for seawater or ammonia-bearing service because it is prone to dezincification and stress-corrosion cracking. Admiralty brass, aluminium brass or cupro-nickel are better choices for those conditions.

What is the difference between 63/37 brass and Admiralty brass?
Admiralty brass (C44300) contains about 1% tin and a small arsenic addition that improve its resistance to dezincification, which makes it suitable for condenser and heat-exchanger tubes. 63/37 brass has no tin and is used mainly for general engineering, plumbing and decorative work.

Export Destinations For 63/37 Brass Pipes


Trinidad & Tobago, Yemen, Israel, Kazakhstan, Sweden, Argentina, Italy, Russia, Libya, France, Angola, New Zealand, Australia, Tunisia, Japan, Bhutan, Denmark, Taiwan, Mexico, Romania, China, Brazil, Norway, Serbia, Egypt, Azerbaijan, Hong Kong, Thailand, Afghanistan, Belarus, Czech Republic, Indonesia, Algeria, South Africa, Kenya, Slovakia, Mexico, Portugal, Venezuela, Turkey, Ecuador, Lebanon, South Korea, Saudi Arabia, Austria, Poland, Qatar, Canada, Nigeria, Gabon, Bahrain, Lithuania, Philippines, Estonia, United States, Poland, Pakistan, Finland, Iran, Greece, Malaysia, Nigeria, Colombia, Peru, Kuwait, United Arab Emirates, Bulgaria, Iran, Netherlands, Oman, Croatia, Spain, Belgium, Ghana, Singapore, Bolivia, Bangladesh, Mongolia, Chile, Vietnam, United Kingdom, Switzerland, Costa Rica, Sri Lanka, Ukraine, Jordan, Hungary, Morocco, Chile, Iraq.