This standard is issued under the fixed designation B ; the number 1 This specification is under the jurisdiction of ASTM Committee B05 on Copper. ASTM B(). Standard Specification for Copper-Zinc-Lead Alloy ( Leaded-Brass) Extruded Shapes. standard by ASTM International. Buy ASTM B SPECIFICATION FOR COPPER-ZINC-LEAD ALLOY ( LEADED-BRASS) EXTRUDED SHAPES from SAI Global.

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The capacity for cold working this alloy is rated as “poor”.

Most easily hot worked, and has a pleasant yellow-gold color. Modulus of Elasticity Tension. Soldering is rated as “excellent”, brazing is rated as “good”, oxyacetylene welding is “not recommended”, gas shielded arc welding is “not recommended”, coated metal arc welding is “not recommended”, spot welding is “not recommended”, seam welding is “not recommended”, and butt welding is rated as “fair”.

Where Alloy FC Brass is Primarily used for architectural hardware and trim.

C Copper Alloys Material Property Data Sheet – Product availability and request a quote

It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for asfm use and application. The machinability rating of this alloy is Link to Active This link will always route to the current Active version of the standard. Historical Version s – view asfm versions of standard. Free machining, used as-extruded or as-forged but best applied where products require machining as secondary operation.


The recommended hot working temperature for this alloy is between and F.

– C Alloy

The hot forgeability rating of this alloy is unknown. Tensile strength and hardness of the product furnished shall be determined by tension and Rockwell hardness tests. When copper is so determined, that difference value shall conform to the requirements asym. This abstract is a brief summary of the referenced standard.

Electrical Resistivity microhm-cm at 68 Deg F. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

The annealing temperature for this alloy is between and F. This specification covers the requirements for extruded leaded-brass angles, channels, and other architectural shapes of solid cross section produced in 4b55 Alloy UNS Nos.

ASTM B455 – 10(2017)

The material shall conform to the chemical composition specified. This alloy’s capacity for being hot formed is rated as “excellent”. Distributors will offer small quantity buys while mills will generally only sell large quantities, with delivery times anywhere from 10 to 50 weeks depending on size and form required This material is stocked primarily in Structurals by 18 distributors but is also available to a lesser extent in Bar Products, Shapes, Tubular Products, Wire Products, and Flat Rolled Products.


ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.