Logo

ASTM B476-01(2012)

Historical Reaffirmation

Standard Specification for General Requirements for Wrought Precious Metal Electrical Contact Materials

$73.00

$73.00

$131.40


Sub Total (1 Item(s))

$ 0.00

Estimated Shipping

$ 0.00

Total (Pre-Tax)

$ 0.00


Stay effortlessly up-to-date with the latest standard revisions. When new versions are released, they're automatically charged and delivered to you, ensuring seamless compliance.

...

1.1 This specification covers general requirements common to wrought precious metal electrical contact alloy products in the form of sheet, strip, wire, and rod. Unless otherwise specified in the purchase order or in an individual specification, these general requirements shall apply to wrought electrical contact materials where indicated in the applicable product specifications issued by ASTM.

1.2 In case of conflict, the requirements on the purchase order, the individual specification, and this general specification shall prevail in the sequence named.

1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to become familiar with all hazards including those identified in the appropriate Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.

This specification covers general requirements common to wrought precious metal electrical contact alloy products in the form of sheet, strip, wire, and rod. The raw material shall be of such quality and purity that the finished product shall have the properties and characteristics prescribed in the applicable product specification. The product shall be produced by a combination of hot or cold working operations, it shall be finished, unless otherwise specified, by cold working, annealing, or heat treatment as may be necessary to meet the specified properties. Surfaces of all material furnished to this specification shall be smooth, clean, and free from scratches, stains, rough spots, slivers, laps, scale, pits, and any other injurious defects. Test methods such as chemical analysis and physical tests shall be performed accordingly.


For purpose of determining compliance with the specified limits for requirements of the properties listed in the following table, an observed value or a calculated value shall be rounded as indicated in accordance with Practice E29.

PropertyUnitRounded Unit
for Observed or
Calculated Value
Chemical compositionpercent
Hardness
Knoop (100-g load unless other-
wise specified)
Vicker (specify load)
Rockwell (all scales, specify which)
Rockwell superficial (all scales,
specify which)
nearest unit on the last right
hand place of figure of
specified limit
Resistivity μΩ·cm
Tensile strength psi (MPa)nearest 1000 psi (nearest 10
MPa)
Yield Strength psi (MPa)nearest 1000 psi (nearest
10 MPa)
Elongation
Below 5 % percentnearest multiple of 0.5 %
5 % and over percentnearest 1 %
Grain size
Up to 0.055 mm incl. mmnearest multiple of 0.005
mm
Over 0.055 to 0.160, mm, incl. mmnearest 0.01 mm

SDO ASTM: ASTM International
Document Number B476
Publication Date May 1, 2012
Language en - English
Page Count 4
Revision Level 01(2012)
Supercedes
Committee B02.05
Publish Date Document Id Type View
Nov. 1, 2021 B0476-21 Revision
May 10, 2001 B0476-90R95E01 Revision
May 10, 2001 B0476-01 Revision
April 1, 2017 B0476-01R17 Reaffirmation
May 1, 2012 B0476-01R12 Reaffirmation
June 1, 2006 B0476-01R06 Reaffirmation