ASTM B standard specification for copper beryllium alloy rod and bar – Designation: B /B The following alloys meet the ASTM-B standard. Select an alloy for product specifications: C Copper Alloy C is the most commonly specified. ASTM B, AMS , SAE J, RWMA CLASS IV. C is also known as Alloy 25 and is the most commonly utilized beryllium copper alloy and is notable .
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The capacity for cold working this alloy is rated as “excellent”. The hot forgeability rating of this alloy is “not recommended”. Your comments are invited either for revision of this v196 or for additional standards and should be addressed to ASTM International Headquarters. Workmanship, Finish and Appearance This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Products shall be available in the following tempers: Dimensions and Permissible Variations Combining values from the two systems may result in nonconformance with the specification.
Modulus of Elasticity Tension. Number of Tests and Retests This specification establishes the requirements for rods bb196 bars in straight lengths of copper-beryllium alloys with Copper Alloy UNS Nos.
It atsm the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Link to Active This link will always route to the current Active version of the standard. C, C, and C Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
These special combinations of properties such as increased ductility, electrical conductivity, dimensional accuracy, endurance life, and resistance to elastic drift and hysteresis in springs, may be obtained by special precipitation-hardening heat treatments.
If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
Historical Version s – view previous versions of standard. Our staff of industry professionals is available to help you meet your metals requirements. The mechanical requirements of Table 3 do not apply to such special heat treatments.
The tension test should not be made except when indicated by the purchaser. Please contact us to check availability. Only two such reheat treatments shall be permitted. NOTE 1—Mechanical property data determined on other than round cross sections, for sizes under 0. Beryllium Copper, C Chemistry Data: Beryllium Coppers are available in ductile, heat treatable tempers and in mill hardened tempers.
Qstm comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. This alloy’s capacity for being hot formed is rated as “good”.
The following three alloys are included: The recommended hot working temperature for this alloy is between F. This abstract is a brief summary ast the referenced standard. Approved April 1, Electrical Resistivity microhm-cm at 68 Deg F. Within the text, the SI units are shown in brackets. Precipitation Heat Treatment 9. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
The following section was renumbered.
A number in parentheses indicates the year of last reapproval. C shall be the alloy furnished whenever Speci? Additional sizes available, not all sizes shown are available from stock. Further thermal treatments of these tempers are not normally required. This standard has been approved for use by agencies of the Department of Defense.
We specialize in beryllium bar, but offer an additional selection of beryllium copper bar in a variety of additional specifications and offer cut to length programs from our strategically located facilities around the world. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
The machinability rating of this alloy is The following three alloys are included: Browse our extensive selection of beryllium copper round bar here or get satm touch with a Future Metals professional for a personalized quote on your next beryllium copper bar order.
ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.
The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Within the text, the SI units are shown in brackets. The annealing temperature for this alloy is between F. Soldering is rated as “good”, brazing is rated as “good”, oxyacetylene welding is “not recommended”, gas shielded arc welding is rated as “good”, coated metal arc welding is rated as “good”, spot welding is rated as ” good”, seam welding is rated as ” fair”, and butt welding is rated as “fair”.
Full cross section or machined specimens shall be as speci? Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above aastm or at phonefaxor service astm. The material for manufacture shall be cast and worked to such purity and soundness as to be suitable for processing astmm hot working, cold working, and annealing to produce a uniform wrought structure and specified temper in the finished product.
These products meet property requirements in Table 3 and normally require no further heat treatment by the user.