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C46400 Naval Brass

If you have spent any time around metals then you know just how malleable and strong brass is. This is primarily due to its combination of copper and zinc - and the occasional addition of tin and other metals. And while brass is good for a lot of things, it is not good for conditions that require constant contact with varying humidity, moisture, or water. Especially if it is saltwater. For this type of application, you are going to need Naval Brass, a type of brass classified as Alpha.

C46400 is the classic Naval Brass and gets its name from its historical application in the marine trades. Sometimes referred to as Marine Brass, this metal has been widely used in military applications. Thanks to the addition of tin and zinc, it holds up well in wet conditions - including underwater environments.

Naval Brass has been used as propeller shafts, marine hardware, and fittings. It is a great metal choice to use in both salt water and freshwater applications. In addition, it has many industrial applications.

As mentioned, because of its strong, corrosive-resistant and hardness it is also a great material to use for industrial applications. It has been used for welding rods, condenser tubes, structures, aircraft parts, decorative and more.

Atlas carries C46400 Naval Brass in Sheet, Plate and Rounds and we also have it in a specialty product, C46400 Diamond Cut Naval Brass Plate. We carry a wide range of diameters in solid bar stock and thicknesses in the sheet and plate. We will cut the material to length. C46400 Naval Brass is one of the top choices for industrial and marine atmosphere applications. This is due to it's high corrosion resistance to seawater.


C46400 Naval Brass Sheet/Plate 464 Plate RFQ Button

C46400 Naval Brass Round Solid Bar 464 RoundBat RFQ Button

C46400 Diamond Cut Naval Brass Sheet/Plate 464 Diamonized RFQ Button


C46400 Naval Brass properties give it fair to excellent corrosion resistance. Excellent hot workability and hot forgeability. Fabricated by blanking, drawing, bending, heading and upsetting, hot forging, pressing.

C46400 NAVAL BRASS TYPICAL USES

Some of the typical areas that C46400 is used in, is as follows:

  • Air Pressure Conveyor Systems
  • Sound Proofing Equipment
  • Springs
  • Chain
  • Bead Chain
  • Tubing for Instruments
  • Tubing for Machines
  • Heat Exchangers
  • Pump Cylinders
  • Wire Screens
  • Pumps
  • Liners
  • Power Cylinders

TYPICAL C46400 NAVAL BRASS CHEMICAL COMPOSITION

(%max., unless shown as range or min.)

NOTE: Information courtesy copper.org


Cu Fe Pb Zn
Min./Max. 68.5-71.5 .05 .07 Rem.
Nominal 70.0 - - 30.0

Note: Cu + Sum of Named Elements, 99.7% min.

TYPICAL C46400 NAVAL BRASS MECHANICAL PROPERTIES

(measured at room temperature, 68 F (20 C)

NOTE: Information courtesy copper.org

Temper Section
Size
Cold
Work
Typ/
Min
Temp Tensile
Strength
Yield
Strength
(0.5% ext.
under load)
Yield
Strength
(0.2%
offset)
Yield
Strength
(0.05%
offset)
El Rockwell
Hardness
Vickens
Hard.
Brinell
Hard.
Shear
Strength
Fatigue
Strength*
Izod
Impact
Strength

in. %
F ksi ksi ksi ksi % B C F 30T 500 500 3000 ksi ksi ft-lb

mm.

C MPa MPa MPa MPa







MPa MPa J
Tube
H80 0.0 35 TYP 68 78 64 - - 8 82 - - 73 - - - - - 0.0

0.0

20 538 441 - - 8 82 - - 73 - - - - - 0.0
Flat Products
OS015 0.04 0 TYP 68 53 22 - - 54 - - 78 43 - - - 35 14 0.0

1

20 365 152 - - 54 - - 78 43 - - - 241 97 0.0
H02 0.04 0 TYP 68 62 52 - - 25 70 - - 65 - - - 40 18 0.0

1

20 427 359 - - 25 70 - - 65 - - - 276 124 0.0
Flat Products
H06 0.04 0 TYP 68 86 65 - - 5 88 - - 76 - - - 46 - 0.0

1

20 593 448 - - 5 88 - - 76 - - - 317 - 0.0
OS100 0.04 0 TYP 68 44 11 - - 66 - - 54 11 - - - - 13 0.0

1

20 303 76 - - 66 - - 54 11 - - - - 90 0.0
OS035 0.04 0 TYP 68 49 17 - - 57 - - 68 31 - - - 34 14 0.0

1

20 338 117 - - 57 - - 68 31 - - - 234 97 0.0
H04 0.04 0 TYP 68 76 63 - - 8 82 - - 73 - - - 44 21 0.0

1

20 524 434 - - 8 82 - - 73 - - - 303 145 0.0
Flat Products
H08 0.04 0 TYP 68 94 65 - - 3 91 - - 77 - - - 48 23 0.0

1

20 648 448 - - 3 91 - - 77 -

Frequently Asked Questions About Naval Brass

Does naval brass rust?

No, naval brass does not rust. It is a strong alloy that is resistant to corrosion. This is why it makes such a great option for those applications that involve both freshwater and saltwater. In fact, it is highly capable of resisting normal corrosion caused by salt.


What grade of commercial quality is naval brass?

While the composition may vary slightly, naval brass is a copper alloy usually composed of 59% copper, 40% zinc, and 1% tin. It also has a trace amount of lead. It can be categorized in a sub-family for brasses referred to as Alpha Beta Brasses or Duplex Brasses. They get this classification due to their characteristic nature of being harder and stronger than other types of brass.


What is dezincification?

As brass corrodes, it can target zinc which puts it through a dezincification process. What this means is that zinc is removed from the metal and copper is left behind. It can cause changes in the color (often turning brass pink), but in more severe cases it can actually weaken brass and even perforate it.

Dezincification is exactly why brass doesn’t do well in saltwater, soft water, or water with high temperatures.

Naval brass, on the other hand, is able to avoid the dezincification process by keeping a lower zinc content and adding a touch of tin. This is what makes this strong, durable metal so ideal for wet applications.


Can naval brass be welded?

Naval brass can be welded, yes. But unlike some other metals, it can be difficult to do, thanks to its high zinc to copper ratio.

Keep in mind that welding naval brass can be dangerous. So, you will want to always take precaution due to the toxic zinc and copper fumes that can be released during the welding process.

To weld naval brass, you will want to use gas-shielded arc processes like MIG and TIG. And determining the gas to use should be dependent on the thickness of your brass. Argon is a great option for those less than 3mm. And anything greater, a 75/25 mixture of helium and argon will work well.


What if I have questions about naval brass?

If you have questions about naval brass, our knowledge staff at Atlas Bronze is here for you. We can help you find exactly what you need for your application or project. You can reach us at (800) 478-0887.