FR2333052A1 - Hardenable alloy steel powder contg. manganese - and with low oxygen content so dense, high strength powder forgings can be obtd. - Google Patents

Hardenable alloy steel powder contg. manganese - and with low oxygen content so dense, high strength powder forgings can be obtd.

Info

Publication number
FR2333052A1
FR2333052A1 FR7635617A FR7635617A FR2333052A1 FR 2333052 A1 FR2333052 A1 FR 2333052A1 FR 7635617 A FR7635617 A FR 7635617A FR 7635617 A FR7635617 A FR 7635617A FR 2333052 A1 FR2333052 A1 FR 2333052A1
Authority
FR
France
Prior art keywords
oxygen content
low oxygen
obtd
dense
manganese
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7635617A
Other languages
French (fr)
Other versions
FR2333052B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoganas AB
Original Assignee
Hoganas AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoganas AB filed Critical Hoganas AB
Priority to FR7635617A priority Critical patent/FR2333052A1/en
Publication of FR2333052A1 publication Critical patent/FR2333052A1/en
Application granted granted Critical
Publication of FR2333052B1 publication Critical patent/FR2333052B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0264—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements the maximum content of each alloying element not exceeding 5%
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14—Treatment of metallic powder
    • B22F1/142—Thermal or thermo-mechanical treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)

Abstract

The alloy comprises by wt. 0.1-0.7% C; 2% max. Ni; 1% max. Mo; 0.2-1.75% Mn; 0.04-1.51% Cr; 0.1% max. Si; 5000 ppm. max. O2; balance iron. Pref. alloys contain (a) 0.2-0.6% C; (b) 0.04-0.8% Cr; (c) 0.55-1.75% Mn; (d) 1.8% Ni; (e) 0.25% Mo. The pref. annealing treatment is at 750-1200 degrees C in a reducing atmos., esp. H2 or cracked ammonia. Used as e.g. powders for sintering and/or forging, where a high carbon content is present, not only to assist hardenability but also to maintain a low oxygen content so the porosity of the final product, e.g. a forging, is reduced, and the mechanical properties improved. With a low O2 content the oxidn. of the Mn present is avoided.
FR7635617A 1976-11-25 1976-11-25 Hardenable alloy steel powder contg. manganese - and with low oxygen content so dense, high strength powder forgings can be obtd. Granted FR2333052A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7635617A FR2333052A1 (en) 1976-11-25 1976-11-25 Hardenable alloy steel powder contg. manganese - and with low oxygen content so dense, high strength powder forgings can be obtd.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7635617A FR2333052A1 (en) 1976-11-25 1976-11-25 Hardenable alloy steel powder contg. manganese - and with low oxygen content so dense, high strength powder forgings can be obtd.

Publications (2)

Publication Number Publication Date
FR2333052A1 true FR2333052A1 (en) 1977-06-24
FR2333052B1 FR2333052B1 (en) 1980-12-12

Family

ID=9180328

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7635617A Granted FR2333052A1 (en) 1976-11-25 1976-11-25 Hardenable alloy steel powder contg. manganese - and with low oxygen content so dense, high strength powder forgings can be obtd.

Country Status (1)

Country Link
FR (1) FR2333052A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2500483A1 (en) * 1981-02-24 1982-08-27 Sumitomo Metal Ind OIL-ATOMIZED LOW-ALLOY STEEL POWDER AND PROCESS FOR PRODUCING THE SAME
EP0421811A1 (en) * 1989-10-06 1991-04-10 Sumitomo Metal Mining Company Limited Alloy steel for use in injection molded sinterings produced by powder metallurgy

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2432338A1 (en) * 1973-07-05 1975-01-16 Kawasaki Steel Co RAW POWDER FOR RAW POWDER METALLURGY

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2432338A1 (en) * 1973-07-05 1975-01-16 Kawasaki Steel Co RAW POWDER FOR RAW POWDER METALLURGY

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2500483A1 (en) * 1981-02-24 1982-08-27 Sumitomo Metal Ind OIL-ATOMIZED LOW-ALLOY STEEL POWDER AND PROCESS FOR PRODUCING THE SAME
EP0421811A1 (en) * 1989-10-06 1991-04-10 Sumitomo Metal Mining Company Limited Alloy steel for use in injection molded sinterings produced by powder metallurgy

Also Published As

Publication number Publication date
FR2333052B1 (en) 1980-12-12

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