# US 5,346,529 A · Powdered metal mixture composition

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- Number: US 5,346,529 A
- Document ID: US5346529A
- Status: Granted
- Kind: A
- Application number: 07/855,881
- Filed: 1992-03-23
- Granted: 1994-09-13
- Earliest claimed: 1992-03-23
- Assignees: Tecsyn PMP, Inc.
- Inventors: Bjorn O. A. Pettersson
- Web page: https://patentgrep.com/patent/US5346529A

## CPC

- C22C 33/0264: {the maximum content of each alloying element not exceeding 5%}
- C22C 33/0207: {Using a mixture of pre-alloyed powders or a master alloy}
- F02F 1/10: for liquid cooling
- F02B 75/22: with cylinders in V, fan, or star arrangement
- F05C 2203/04: Phosphor
- F05C 2203/0882: Carbon, e.g. graphite
- C22C: ALLOYS (treatment of alloys C21D, C22F)
- F02F: CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
- F05C: INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES

## Abstract

Powdered metal composition consisting essentially of carbon, copper, solid lubricant particles, carbide-enriched alloys and iron and process for sintering to yield alloyed components exhibiting improved mechanical, physical and wear-resistent properties.

## Claims

### Claim 1

A powdered metal mixture comprising:
(a) between 0.9 and 1.3% by weight of graphite;
(b) between 0.8 and 3.0% by weight of copper;
(c) between 0.01 and 5.0% by weight of a solid lubricant selected from the group consisting of manganese sulphide, graphite, selenium, bismuth, and tellurium;
(d) up to 98.3% by weight of iron having an average particle size of substantially 100 mesh with an oxide content less than 0.3% by weight; and
(e) between 0.01 and 50% by weight of a powdered tool steel alloy selected from those commercially available powders designated by the American Steel and Iron Institute as M2, M3, and T15.