What is ASTM B584 Bronze?

News - Mar 29, 2016 - by mrusso

We often receive requests looking for “ASTM B584” bronze.  Many of the customers looking for this type of bronze come to us with a bit of confusion on what exactly ASTM B584 bronze is and who supplies it.

The official definition of ASTM B584 is as follows:

(From the ASTM B584 Specification Document)

“This specification covers requirements for copper alloy sand castings for general applications”

We are accustomed to copper alloy numbers such as “C93200” or “C95400” which signify a specific alloy.  The ASTM B584 does not specify any specific alloy, rather it specifies a group of copper alloys along with a specific method of casting these products.  The ASTM B584 specification is for a number of different copper alloys manufactured by the sand or static casting process.  Some of our customers come to us with a request for ASTM B584 bronze without any additional specification or description, this could be any of more than 50 different copper alloys.  Below is a list of the copper alloys covered by the ASTM B584 specification.  Included, for reference, in this table are the previous ASTM designations for the individual sand cast alloys. 

Classification Copper Alloy No. Previous Designation
Leaded Red Brass C83450 .......
  C83600 B145
  C83800 B145
Leaded Yellow Brass C85200 B146
  C85400 B146
  C85700 B146
High-Strenth Yellow Brass C86200 B147
  C86300 B147
  C86400 B147
  C86500 B147
  C86700 B132
Silicon Bronze/Brass C87300 B198
  C87400 B198
  C87500 B198
  C87600 B198
  C87610 B198
  C87850 .......
Bismuth Selenium Brass C89520 .......
Bismuth Red Brass C89833 .......
Bismuth Bronze C89836 .......
Bismuth Semi-Red Brass C89844 .......
Tin Bronze/Leaded Tin Bronze C90300 B143
  C90500 B143
  C92200 .......
  C92210 B143
  C92300 B143
  C92600 .......
High-Leaded TIn Bronze C93200 B144
  C93500 B144
  C93700 B144
  C94300 B144
Nickel-Tin Bronze C94700 B292
  C94800 B292
  C94900 .......
Spinodal Alloy C96800 .......
Leaded Nickel Bronze C97300 B149
  C97600 B149
  C97800 B149


As you can see, the specification of ASTM B584 clearly is not enough information to determine what copper alloy is required for your job.  Individual copper alloys can have a number of possible ASTM specifications depending on the method of casting and/or form. The table below shows three of the most commonly used bronze alloys and the different ASTM specifications that can be associated with each of them depending on the method by which they are cast.

Alloy Ingot Sand Centrifugal Continuous
C93200 ASTM B30 ASTM B584 ASTM B271 ASTM B505
C95400 ASTM B30 ASTM B148 ASTM B271 ASTM B505
C86300 ASTM B30 ASTM B22 ASTM B271 ASTM B505


The following list are additional ASTM specifications that can be referenced for various copper alloys.


Other Common ASTM Standards

B22- Specification for Bronze Castings for Bridges and Turntables

B61- Specification for Steam or Valve Bronze Castings

B62- Specification for Composition Bronze or Ounce Metal Castings

B66- Specification for Bronze Castings for Steam Locomotive Wearing Parts

B67- Specification for Car and Tender Journal Bearings, Lined

B148- Specification for Aluminum-Bronze Sand Castings

B176- Specification for Copper-Alloy Die Castings

B208- Practice for Preparing Tension Test Specimens for Copper Alloy Sand, Permanent Mold, Centrifugal, and Continuous Castings

B271- Specification for Copper-Base Alloy Centrifugal Castings

B369- Specification for Copper-Nickel Alloy Castings

B427- Specification for Gear Bronze Alloy Castings

B505/B505M- Specification for Copper Alloy Continuous Castings

B763- Specification for Copper Alloy Sand Castings for Valve Applications

B770- Specification for Copper-Beryllium Alloy Sand Castings for General Applications

B806- Specification for Copper Alloy Permanent Mold Castings for General Applications

B824- Specification for General Requirements for Copper Alloy Castings


So what is the best answer when looking for ASTM B584 Bronze?  The first and most important step is to determine what is the actual copper alloy needed for the job.  Most copper alloy numbers will have a “C” or “CDA” in front of a grouping of numbers.  An example, “C93200” or “CDA 93200” Bearing Bronze.

 If you can determine the correct alloy you are half way there.  The next step is to verify that the method of casting is up to date.  Often when our customers request a product under the ASTM B584 specification or any other specification that requires a sand cast product, we find that they are using an old or out dated print.  Years ago sand casting used to be the most common and most effective way of casting copper alloy products.  Over the years there have been substantial advancements in casting technology.  For a great of number of bronze based products, a continuous or centrifugal cast bronze will yield a final product of greater quality and free of possible defects that can come as a result of sand casting. 


If you do discover that a continuous cast bronze can be used for your project, then your job just became easier.  We stock a very large inventory of continuous cast bronze bar stock in various shapes, sizes, and alloys.  To make things even easier, most of our continuous cast bar stock is available online at bravobronze.com.  With our easy to navigate online store you can get pricing for continuous cast bronze bar stock by the inch, instantly online.  If you need to move forward with the job, then ordering your bar stock is just a few clicks away. 

Hopefully with the information provided in this post, next time you are presented a request for ASTM B584 bronze, you’ll know exactly how to proceed.