Classifications

• • C—CHEMISTRY; METALLURGY
  • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
  • C22C—ALLOYS
  • C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
  • C22C27/06—Alloys based on chromium
• • C—CHEMISTRY; METALLURGY
  • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
  • C22C—ALLOYS
  • C22C19/00—Alloys based on nickel or cobalt
  • C22C19/07—Alloys based on nickel or cobalt based on cobalt

Definitions

• This invention relates to an improvement in the copperand molybdenum-containing alloys of the class disclosed ABSTRACT OF THE DISCLOSURE in my copending application Ser. No. 372,089 filed June In a cobalt-chrominm-tungsten alloy, a portion of the 2, 1964, and issued as US. Patent 3,307,939, which concobalt is substituted with from -20% nickel to tain about 2.0% carbon, 1% silicon, 1% manganese, markedly increase the corrosion resistance of the alloy. chromium, 14% tungsten, 46% cobalt, 4% molyb- 20 denum and 2% copper.
• a from approximately Rockwell C 54-55 for the nickelthe corrosion resistance of hard alloys containing cobalt, free alloy or alloys with a low nickel content to Rockwell chromium and tungsten can be improved by an addition C 52-54 for alloy 1 containing 10% nickel and 50-52 of copper and, if desired, molybdenum.
• an Rockwell C for alloy 2 containing 20% nickel for this alloy having the following composition has a particularly 4O reason an appreciable reduction of the wear resistance high corrosion resistance and a virtually unreduced wear as a result of the replacement of nickel for cobalt is not resistance: 22-25% carbon, 3032% chromium, 13- to be expected.
• An alloy having a composition of 2.2% carbon, 1% silicon, 1% manganese, 30% chromium, 14% tungsten, 10% nickel, 36% cobalt, 4% molybdenum, and 2% copper appears to be most suitable for practical use as a corrosion-resisting hard alloy containing copper, molybdenum and nickel.
• a similarly favorable result was achieved with alloys having a medium wear resistance by an addition of nickel.
• the analysis ranges of such hard alloys are 0.7-2.2% carbon, O-2% silicon, 0-1% manganese, -35% chromium, 312.9% tungsten, 2.5 to 10% nickel, 06% molybdenum, 0.2-6% copper, balance cobalt.
• Alloy of medium wear resistance 1.20% carbon, 1.0% silicon, 0.09% manganese, 27.7% chromium, 4.9% tungsten, 6.0% nickel, 3.43% molybdenum, 1.48% copper, 0.35 iron, balance cobalt.
• Boiling temperature 1. 20 1. 15 10- E01 Room temperature 0.75 0.83
• Bolling temperature 135 142 chromium, 3-20% tungsten, 0-6% molybdenum, 0.2-6% copper, 25-20% nickel, balance cobalt.
• a corrosion-resisting cobalt-chromium-tungsten a1- loy consisting essentially of 0.7-2.5% carbon, up to 2% silicon. up to 1% manganese, 25-35% chromium, 3-20% tungsten, up to 6% molybdenum, 0.2-6% copper, 2.5- 20% nickel, balance cobalt.
• a corrosion-resisting cobalt-chromium-tungsten alloy consisting essentially of 22-25% carbon, 30-32% chromium, 13-20% tungsten, up to 1% manganese, up to 1% silicon, 0.2-6% copper, up to 6% molybdenum, 2.5- 20% nickel, balance cobalt.
• a corrosion-resisting cobalt-chromium-tungsten alloy consisting essentially of 07-22% carbon, up to 2% silicon, up to 1% manganese, 25-35% chromium, 3- 12.9% tungsten, up to 6% molybdenum, O.2-6% copper, 25-20% nickel, balance cobalt.
• a corrosion-resisting cobalt-chromium-tungsten allov consisting essentially of 2.2% carbon, 30% chromium, 14% tungsten, 36% cobalt, 4% molybdenum, 2% copper, up to 1% manganese, up to 1% silicon, and 10% nickel.
• a corrosion-resisting cobalt-chromium-tungsten allov consisting essentially of 1.2% carbon, 1.1% silicon, 0.15% manganese, 30% chromium, 4% tungsten, 7% ickel, 3.3% molybdenum, 1.6% copper. balance cobalt.
• a corrosion-resisting cobalt-chromium-tungsten alloy consisting essentially of 0.7-2.5% carbon, up to 2% silicon, up to 1% manganese, 25-35% chromium, 3-20% tungsten, up to 6% molybdenum, 0.2-6% copper, 6-20% nickel, balance cobalt.
• a corrosion-resisting cobalt-chromium-tungsten alloy consisting essentially of 2.23-2.30% carbon, 0.42- 1.28% silicon, 0.08-0.32% manganese, 27.l28.46% chromium, 13.5-16.15% tungsten, 6.1-19.3% nickel, 3.3- 3.39% molybdenum, 1.5-2.11% copper, 02-07% iron, and 27.9-37.66% cobalt.
• a corrosion-resisting cobalt-chromium-tungsten alloy consisting essentially of 1.2% carbon, 1.0-1.1% silicon, 0.09-0i15% manganese, 27.7-30% chromium, 4- 4.9% tungsten, 6.0-7% nickel, 3.3-3.43% molybdenum, 1.48-1.6% copper, up to 0.35% iron, balance cobalt.

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• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Mechanical Engineering (AREA)
• Metallurgy (AREA)
• Organic Chemistry (AREA)
• Laminated Bodies (AREA)
• Manufacture, Treatment Of Glass Fibers (AREA)
• Adornments (AREA)
• Catalysts (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=25604900

Family Applications (1)

Country Status (3)

Cited By (3)

Citations (4)

• 1964
  • 1964-10-26 SE SE12885/64A patent/SE326302B/xx unknown
  • 1964-10-28 GB GB44049/64A patent/GB1036258A/en not_active Expired
• 1967
  • 1967-06-08 US US644484A patent/US3425827A/en not_active Expired - Lifetime

Patent Citations (4)

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