US3260594A - High temperature alloys - Google Patents

High temperature alloys Download PDF

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Publication number
US3260594A
US3260594A US425687A US42568765A US3260594A US 3260594 A US3260594 A US 3260594A US 425687 A US425687 A US 425687A US 42568765 A US42568765 A US 42568765A US 3260594 A US3260594 A US 3260594A
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US
United States
Prior art keywords
chromium
alloy
creep
tungsten
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.)
Expired - Lifetime
Application number
US425687A
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English (en)
Inventor
Martin N Ornitz
Ray H English
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.)
Blaw Knox Co
White Consolidated Industries Inc
Original Assignee
Blaw Knox Co
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
Priority to FR951283A priority Critical patent/FR1379124A/fr
Application filed by Blaw Knox Co filed Critical Blaw Knox Co
Priority to US425687A priority patent/US3260594A/en
Priority to GB560/66A priority patent/GB1116103A/en
Priority to BE674904D priority patent/BE674904A/xx
Priority to FR45388A priority patent/FR89298E/fr
Application granted granted Critical
Publication of US3260594A publication Critical patent/US3260594A/en
Assigned to WHITE CONSOLIDATED INDUSTRIES, INC. reassignment WHITE CONSOLIDATED INDUSTRIES, INC. MERGER (SEE DOCUMENT FOR DETAILS). EFFECTIVE DEC. 26, 1978 DISTRICT OF COLUMBIA Assignors: ATHENS STOVE WORKS, INC., BLAW-KNOX COMPANY, BULLARD COMPANY THE, DURALOY BLAW-KNOX, INC., FAYSCOTT, INC., GIBSON PRODUCTS CORPORATION, HUPP, INC., JERGUSON GAGE & VALVE COMPANY, KELIVINATOR INTERNATIONAL CORPORATION, KELVINATOR COMMERCIAL PRODUCTS, INC., KELVINATOR, INC., R-P & C VALVE, INC., WHITE SEWING MACHINE COMPANY, WHITE-SUNDSTRAND MACHINE TOOL, INC., WHITE-WESTINGHOUSE CORPORATION
Assigned to BLAW-KNOX COMPANY reassignment BLAW-KNOX COMPANY MERGER (SEE DOCUMENT FOR DETAILS). EFFECTIVE DEC. 26, 1978. DELAWARE Assignors: AETNA-STANDARD ENGINEERING COMPANY, BLAW-KNOX CONSTRUCTION EQUIPMENT, INC.,, BLAW-KNOX EQUIPMENT, INC., BLAW-KNOX FOOD & CHEMICAL EQUIPMENT, INC., BLAW-KNOX FOUNDRY & MILL MACHINERY, INC., COPES-VULCAN, INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/68—Furnace coilers; Hot coilers
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten

Definitions

  • a single preferred composition would be:
  • the chromium content must be 20% or higher to avoid catastrophic oxidation.
  • the lower limit of chromium is critical if oxidation resistance and high creep at temperatures above 1800 F. and particularly above 2000 F. are to be attained.
  • FIGURE 3A there is illustrated the curve of stress rupture (solid line) and the curve of creep rate in percent deflection (chain line) at 1800 F. for an alloy of the composition C .42 Ni 256 Mn 1.46 Cr 227 S1 185 W 142
  • FIGURE 3B there is illustrated the curve of stress rupture (solid line) and the curve of creep rate in percent deflection (chain line) at 2000 F. for the same alloy.
  • Variations in carbon are plotted against rate of creep in FIGURE 4 and variations of manganese are plotted against rate of creep in FIGURE 5 all within the matrix of this invention.
  • chromium at about 17% chromium is illustrated in FIG- URE 6.
  • EXAMPLE V Another series of tests were made to compare prior art alloys with the alloys 'of this invention in oxidation tests at 2200 F. and at 2250 F. The first stage tests were run for 100 hours at 2200 F. :10 F. and the second The foregoing tests show the criticality of the chromium at about 17% in withstanding oxidation at 2200 F. and the criticality of 20% chromium at 2250 F. in avoiding catastrophic oxidation.
  • Experimental heat treating trays were made of the preferred alloy composition of this invention. These trays were used for four months for carrying parts to be hardened at temperatures of 1600 to 1750 F., carburizing and carbonitriding. The trays were cyclically heated to the temperature and then put through an oil quench and draw. At the end of the four month period all trays were in excellent condition. This experience illustrates the excellent resistance to thermal shock of the alloy of the invention.
  • a low creep, high strength alloy resistant to corrosion and thermal shock at elevated temperatures having stress rupture characteristics at 4000 p.s.i. and 1800 F. of at least 400 hours and at 2000 F. and 2000 p.s.i. of at least hours comprising about 0.3% to 0.9% carbon, about 20% to 30% chromium, about 15% to 35% nickel, about 0.8% to 4% manganese, about 0.9% to 3.5% silicon, about 0.3% to 5% tungsten and the balance iron with residual impurities in ordinary amounts.
  • a low creep, high strength alloy resistant to corrosion and thermal shock at elevated temperatures having stress rupture characteristics at 4000 p.s.i. and 1800 F. of at least 400 hours and at 2000 F. and 2000 p.s.i.
  • a low creep, high strength alloy resistant to corrosion and thermal shock at temperatures of 1800 F. to 2200 F. comprising about 0.3% to 0.9% carbon, about 17% to 30% chromium, about 15 to 35% nickel,
  • a low creep, high strength alloy resistant to corrosion and thermal shock at temperatures of 1800 F. Ito 2200 F. comprising about 0.35% to 0.75% carbon, about to chromium, about 30% to nickel, about 1.2% to 2.4% manganese, about 1.2% to 2.5% silicon, about 1.75% to 5% tungsten and the balance iron with residual impurities in ordinary amounts.
  • a loW creep, high strength alloy resistant to corrosion and thermal shock at temperatures of 1600 F. to 2200 F. comprising about 0.4% carbon, about 23% chromium, about 30% nickel, about 1.5% manganese, about 2% silicon, about 1.75 tungsten and the balance iron With residual impurities in ordinary amounts.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Soft Magnetic Materials (AREA)
US425687A 1962-12-31 1965-01-11 High temperature alloys Expired - Lifetime US3260594A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR951283A FR1379124A (fr) 1962-12-31 1963-10-21 Alliages résistant aux températures élevées
US425687A US3260594A (en) 1965-01-11 1965-01-11 High temperature alloys
GB560/66A GB1116103A (en) 1965-01-11 1966-01-05 Improved alloy composition
BE674904D BE674904A (enrdf_load_html_response) 1965-01-11 1966-01-10
FR45388A FR89298E (fr) 1962-12-31 1966-01-10 Alliages résistant aux températures élevées

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US425687A US3260594A (en) 1965-01-11 1965-01-11 High temperature alloys

Publications (1)

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US3260594A true US3260594A (en) 1966-07-12

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US425687A Expired - Lifetime US3260594A (en) 1962-12-31 1965-01-11 High temperature alloys

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US (1) US3260594A (enrdf_load_html_response)
BE (1) BE674904A (enrdf_load_html_response)
GB (1) GB1116103A (enrdf_load_html_response)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3856516A (en) * 1970-02-12 1974-12-24 Blair Knox Co Low creep high strength ferrous alloy
US3865634A (en) * 1973-08-13 1975-02-11 Exxon Research Engineering Co Heat resistant alloy for carburization resistance
US3919073A (en) * 1973-08-13 1975-11-11 Exxon Research Engineering Co Heat resistant alloy for carburization resistance
US4119456A (en) * 1977-01-31 1978-10-10 Steel Founders' Society Of America High-strength cast heat-resistant alloy

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1528478A (en) * 1924-12-16 1925-03-03 Hadfield Robert Abbott Alloy

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1528478A (en) * 1924-12-16 1925-03-03 Hadfield Robert Abbott Alloy

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3856516A (en) * 1970-02-12 1974-12-24 Blair Knox Co Low creep high strength ferrous alloy
US3865634A (en) * 1973-08-13 1975-02-11 Exxon Research Engineering Co Heat resistant alloy for carburization resistance
US3919073A (en) * 1973-08-13 1975-11-11 Exxon Research Engineering Co Heat resistant alloy for carburization resistance
US4119456A (en) * 1977-01-31 1978-10-10 Steel Founders' Society Of America High-strength cast heat-resistant alloy

Also Published As

Publication number Publication date
GB1116103A (en) 1968-06-06
BE674904A (enrdf_load_html_response) 1966-07-11

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Legal Events

Date Code Title Description
AS Assignment

Owner name: WHITE CONSOLIDATED INDUSTRIES, INC.

Free format text: MERGER;ASSIGNORS:BLAW-KNOX COMPANY;KELVINATOR, INC.;WHITE-WESTINGHOUSE CORPORATION;AND OTHERS;REEL/FRAME:003926/0372

Effective date: 19781221

Owner name: BLAW-KNOX COMPANY

Free format text: MERGER;ASSIGNORS:AETNA-STANDARD ENGINEERING COMPANY;BLAW-KNOX CONSTRUCTION EQUIPMENT, INC.,;BLAW-KNOX EQUIPMENT, INC.;AND OTHERS;REEL/FRAME:003926/0382

Effective date: 19781221