Hpb59-1 Brass – Learn the Properties, Benefits & Applications

Hpb59-1 brass refers to an alloy of zinc and copper, which are mixed in varied proportions to create ranges of brass with different properties.

Hpb59-1 Brass Safety Valve
Hpb59-1 Brass Safety Valve


Some of the benefits of Hpb59-1 Brass include:

  • Good machinability: Hpb59-1 brass ensures it is faster to machine and it can sustain higher speeds during cutting.
  • Great mechanical properties: Hpb59-1 brass has great mechanical properties that enhance its lifetime and reduces operation costs.
  • Able to withstand cold and hot pressure: you will be able to use Hpb59-1 brass in both applications of cold and hot pressure.
  • Ease of welding: it is easy to wire and weld Hpb59-1 brass.
  • Good brazing: Hpb59-1 brass has great capability of joining metal pieces at varying melting points.
  • Corrosion resistance: Hpb59-1 brass is resistant to corrosions from chemicals and thus suitable for hardware machinery.


Some of the limitations of Hpb59-1 brass include:

  • Strength: the strength of Hpb59-1 brass is not very high and this limits its use in structural construction projects.
  • Cracking: Hpb59-1 brass tends to form cracks or corrode.

Chemical Element Composition

The chemical element composition of Hpb59-1 Brass is as follows:

  • The first letter H in the grade represents brass
  • The next two digits show the average composition of brass
  • The following numbers and symbols show the contents and their elements. For example, Hpb59-1 shows that its copper (“H”) composition is 59 percent, and the content of lead (“pb”) is about 1 percent.

Chemical Properties

Some of the chemical properties of Hpb59-1 brass include:

  • Zinc Zn: Hpb59-1 brass has a margin composition of Zinc.
  • Boron B: the composition of Boron in Hpb59-1 brass is less than or equal to 0.02.
  • Copper Cu: ranges between 57.0 to 60.0.
  • Aluminium Ai: Hpb59-1 brass contains aluminum that is less than or equal to 0.2.
  • Iron Fe: it has iron less than or equal to 0.5.
  • Bismuth Bi: Hpb59-1 brass has a bismuth composition that is less than or equal to 0.01
  • Antimony Sb: the chemical composition of antimony in Hpb59-1 brass is less than or equal to 0.01.
  • Lead Pb: the range of lead in Hpb59-1 brass ranges between 0.8 to 1.9.
  • Impurities: Hpb59-1 brass contains impurities less than or equal to 1.0.

Physical Properties

Some of the physical properties of Hpb59-1 brass include:

  • Shape: Hpb59-1 brass is available in round shapes, rods, or bars.
  • Size: the diameter of Hpb59-1 brass ranges between 20 mm to 100mm.
  • Color: Hpb59-1 brass has a bright yellow color.

Mechanical Properties

Some of the mechanical properties of Hpb59-1 Brass include:

  • Tensile strength: its tensile strength is greater than or equal to 420.
  • Elongation δ5 (%): it is greater than or equal to 12.
  • Sample size: the distance between two opposite sides in Hpb59-1 brass ranges between 5 to 20.
  • Elongation δ10 (%): it is greater than or equal to 10.

Uses in the Plumbing Industry

Hpb59-1 brass is used in the plumbing industry to produce:

  • Nuts
  • Tube fittings
  • Rivets
  • Spiral casing
  • Fasteners
  • Springs
  • Nozzles


Hpb59-1 brass is widely used due to its great physical, chemical, and mechanical properties. This makes it suitable for different applications where less friction is required in several industries.

For all your HPB59 brass pipe valves and fittings, D&R is here to help – contact us now.

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