ASTM B 662 Class B Precious metals and Alloys

Material group: Nonferrous Alloys / Precious metals and Alloys
Country / Standard: United States / ASTM

Data updates

Latest Update: 2026-05
Total number of updates: 2
Update History
2020-08

This material has 19 properties — only a subset is shown here.

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ASTM B 662 Class B Chemical Composition

CRITERIA
VALUE
UNIT
CAS NUMBER
CRITERIA
Ag
VALUE
48.0 – 52.0
UNIT
%
CAS NUMBER
7440-22-4
CRITERIA
Co
VALUE
≤ 0.5
UNIT
%
CAS NUMBER
7440-48-4
CRITERIA
Cu
VALUE
≤ 0.5
UNIT
%
CAS NUMBER
7440-50-8
CRITERIA
Mo
VALUE
val1
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UNIT
%
CAS NUMBER
7439-98-7
CRITERIA
Ni
VALUE
val1
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UNIT
%
CAS NUMBER
7440-02-0
CRITERIA
Other total
VALUE
val1
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UNIT
%
CAS NUMBER

B662/B662M: 2026 / Standard Specification for Silver-Molybdenum Electrical Contact Material

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ASTM B 662 Class B Physical Properties


Temperature

PROPERTY / VALUE
Modulus of Elasticity
220 GPa
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Electrical Resistivity
0.0313 — 0.0383 Ω∙mm²/m
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Density
val1
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kg/dm³
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Electrical Conductivity
val1
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S/m
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Thermal Conductivity
431 W/(m∙°C)
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Coefficient of Thermal Expansion (CTE)
val1
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10-6/°C
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This material has 19 properties — only a subset is shown here.

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ASTM B 662 Class B Mechanical Properties


Temperature

PROPERTY / VALUE
Tensile Strength
310 MPa
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Rockwell Hardness (HR)
60 — 85
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  • 1Cross References

  • 6Composition
  • 3Mechanical Properties
  • 9Physical Properties
  • -Heat Treatment
  • -Metallography
  • -Machinability

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

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

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

  • -Total Suppliers