ASTM B631 Class A3 Tungsten Alloys

Material group: Nonferrous Alloys / Tungsten Alloys
Country / Standard: United States / ASTM

Data updates

Latest Update: 2022-03
Total number of updates: 2
Update History
2016-07

This material has 10 properties — only a subset is shown here.

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ASTM B631 Class A3 Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Ag
VALUE
25 – 29
UNIT
%
CAS NUMBER
7440-22-4
CRITERIA
C
VALUE
≤ 0.2
UNIT
%
CAS NUMBER
7440-44-0
CRITERIA
Cu
VALUE
≤ 0.2
UNIT
%
CAS NUMBER
7440-50-8
CRITERIA
Other total
VALUE
val1
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UNIT
%
CAS NUMBER
CRITERIA
W
VALUE
val1
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UNIT
%
CAS NUMBER
7440-33-7

B631: 1993 / Standard Specification for Silver-Tungsten Electrical Contact Materials

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ASTM B631 Class A3 Physical Properties


Temperature

PROPERTY / VALUE
Electrical Resistivity
0.0383 — 0.0454 Ω∙mm²/m
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Density
14.95 — 15.31 kg/dm³
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Electrical Conductivity
2.2e+007 — 2.61e+007 S/m
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This material has 10 properties — only a subset is shown here.

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ASTM B631 Class A3 Mechanical Properties


Temperature

PROPERTY / VALUE
Rockwell Hardness (HR)
45 — 70
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ASTM B631 Class A3 International Equivalent Materials


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MATERIAL
STANDARD
COUNTRY / PRODUCER
EQUIVALENCE CATEGORY
MATERIAL
STANDARD
ASTM
COUNTRY / PRODUCER
United States
EQUIVALENCE CATEGORY
Composition 100%

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  • 1Cross References

  • 5Composition
  • 1Mechanical Properties
  • 3Physical Properties
  • -Heat Treatment
  • -Metallography
  • -Machinability

  • -Stress-Strain
  • -Formability
  • -Fatigue
  • -Fracture
  • -Creep

  • -Joints
  • -Coatings
  • -Dimensions
  • -Tribology

  • -Corrosion
  • -Ageing
  • -Weatherability
  • -Irradiation

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