US3076704A - Iron-base alloys - Google Patents
Iron-base alloys Download PDFInfo
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- US3076704A US3076704A US95608A US9560861A US3076704A US 3076704 A US3076704 A US 3076704A US 95608 A US95608 A US 95608A US 9560861 A US9560861 A US 9560861A US 3076704 A US3076704 A US 3076704A
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- iron
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- base alloys
- molybdenum
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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
- C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
Definitions
- This invention relates generally to iron-base alloys, but has reference more particularly to an iron-base alloy which is especially useful for manufacture into roller mill guides for steel mills.
- Roller mill guides for steel mills of which a typical example is illustrated in the accompanying drawing, in which FIG. 1 is an end elevational view of such a guide, and FIG. 2 is a cross-sectional view, taken on the line 2-2 of FIG. 1, have portions or areas which are of varying cross-section, so that it is important that the material which is used for manufacture into such guides have excellent toughness, heat resistance, resistance to impact, and relative freedom from susceptibility to heat checking, i.e., the development of fine cracks on the surface of the guides.
- the alloy is more austenitic than alloys previously used for this purpose, and roller guides made from the alloy have virtually twice the life of guides presently made from such previously used alloys.
- the alloy may contain one or more residual or trace elements, such as silicon, manganese, sulphur, phosphorus, etc., but the total of such elements should not exceed 3%. It is to be understood, therefore, that the phrase substantially all iron, as used in the claims, is to be construed as inclusive of such a combined total of residual or trace elements.
- An alloy which is especially useful for manufacture into roller mill guides for steel mills said alloy consisting of from 1 to 3% carbon, 15 to 20% chromium, 4- to 8% nickel, 28 to 35% cobalt, tungsten in appreciable amounts up to 3%, molybdenum in appreciable amounts up to 3%, and the balance substantially all iron.
- An alloy which is especially useful for manufacture into roller mill guides for steel mills said alloy consisting of about 2% carbon, about 18% chromium, about 6% nickel, about 30% cobalt, about 2 /z% tungsten, about 2 /2% molybdenum, and about 39% iron.
- a roller mil-l guide for steel mills comprising an alloy consisting of from- 1 to 3% carbon, 15 to 20% chromium, 4 to 8% nickel, 28 to 35% cobalt, tungsten and molybdenum each in an appreciable amount up to 3%, and the balance substantially all iron.
- a roller mill guide for steel mills comprising an alloy consisting of about 2% carbon, about 18% chromium, about 6% nickel, about 30% cobalt, about 2 /2% tungsten, about 2 /2% molybdenum, and about 39% iron.
Description
Feb. 5, 1963 A. T. CAPE ETAL 3,076,704
TRON-BASE ALLOYS Filed March 14, 1961 IN V EN TORS.
ARTHUR T. CAPE Y HERBERT CLARKE ATTORNEYS United States Patent 3,076,704 IRON-BASE ALLOYS Arthur T. Cape, Monterey, Calif., and Herbert Clarke, Hillsdale, N.J., assignors to Coast Metals, Inc., Little Ferry, N.J., a corporation of Delaware Filed Mar. 14, 1961, Ser. No. 95,608 4 Claims. (Cl. 75-128) This invention relates generally to iron-base alloys, but has reference more particularly to an iron-base alloy which is especially useful for manufacture into roller mill guides for steel mills.
Roller mill guides for steel mills, of which a typical example is illustrated in the accompanying drawing, in which FIG. 1 is an end elevational view of such a guide, and FIG. 2 is a cross-sectional view, taken on the line 2-2 of FIG. 1, have portions or areas which are of varying cross-section, so that it is important that the material which is used for manufacture into such guides have excellent toughness, heat resistance, resistance to impact, and relative freedom from susceptibility to heat checking, i.e., the development of fine cracks on the surface of the guides.
We have found that an iron-base alloy which has all of these properties has a composition which falls within the following ranges:
Percent Carbon 1 to 3 Chromium 15 to 20 Nickel 4 to 8 Cobalt I 28 to 35 Tungsten Up to 3 Molybdenum Up to 3 Iron Balance 2 are incorporated in the alloy increase its heat-resistance, at the expense of some resistance to impact, and the net result is an alloy which is peculiarly satisfactory for manufacture into roller guides.
The alloy is more austenitic than alloys previously used for this purpose, and roller guides made from the alloy have virtually twice the life of guides presently made from such previously used alloys.
The alloy may contain one or more residual or trace elements, such as silicon, manganese, sulphur, phosphorus, etc., but the total of such elements should not exceed 3%. It is to be understood, therefore, that the phrase substantially all iron, as used in the claims, is to be construed as inclusive of such a combined total of residual or trace elements.
It will be understood that various changes in the aforesaid alloys may be made, within the scope of the appended claims.
Having thus described our invention, we claim:
1. An alloy which is especially useful for manufacture into roller mill guides for steel mills, said alloy consisting of from 1 to 3% carbon, 15 to 20% chromium, 4- to 8% nickel, 28 to 35% cobalt, tungsten in appreciable amounts up to 3%, molybdenum in appreciable amounts up to 3%, and the balance substantially all iron.
2. An alloy which is especially useful for manufacture into roller mill guides for steel mills, said alloy consisting of about 2% carbon, about 18% chromium, about 6% nickel, about 30% cobalt, about 2 /z% tungsten, about 2 /2% molybdenum, and about 39% iron.
3. A roller mil-l guide for steel mills, said guide comprising an alloy consisting of from- 1 to 3% carbon, 15 to 20% chromium, 4 to 8% nickel, 28 to 35% cobalt, tungsten and molybdenum each in an appreciable amount up to 3%, and the balance substantially all iron.
4. A roller mill guide for steel mills, said guide comprising an alloy consisting of about 2% carbon, about 18% chromium, about 6% nickel, about 30% cobalt, about 2 /2% tungsten, about 2 /2% molybdenum, and about 39% iron.
References Cited in the file of this patent FOREIGN PATENTS 716,277 France Dec. 17, 1931
Claims (1)
1. AN ALLOY WHICH IS ESPECIALLY USEFUL FOR MANUFACTURE INTO ROLLER MILL GUIDES FOR STEEL MILLS, SAID ALLOY CONSISTING OF FROM 1 TO 3% CCARBON, 15 TO 20% CHROMIUM, 4 TO 8% NICKEL, 28 TO 35% COBALT, TUNGSTEN IN APPRECIABLE AMOUNTS UP TO 3%, MOLYBDENUM IN APPRECIABLE AMOUNTS UP TO 3%, AND THE BALANCE SUBSTANTIALLY ALL IRON.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US95608A US3076704A (en) | 1961-03-14 | 1961-03-14 | Iron-base alloys |
Applications Claiming Priority (1)
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US95608A US3076704A (en) | 1961-03-14 | 1961-03-14 | Iron-base alloys |
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US3076704A true US3076704A (en) | 1963-02-05 |
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US95608A Expired - Lifetime US3076704A (en) | 1961-03-14 | 1961-03-14 | Iron-base alloys |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9334547B2 (en) | 2013-09-19 | 2016-05-10 | L.E. Jones Company | Iron-based alloys and methods of making and use thereof |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR716277A (en) * | 1931-04-29 | 1931-12-17 | Schoeller Bleckmann Stahlwerke | Process for manufacturing dies which can be used in presses for working metal bands and in particular for working alpaca at the press |
-
1961
- 1961-03-14 US US95608A patent/US3076704A/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR716277A (en) * | 1931-04-29 | 1931-12-17 | Schoeller Bleckmann Stahlwerke | Process for manufacturing dies which can be used in presses for working metal bands and in particular for working alpaca at the press |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9334547B2 (en) | 2013-09-19 | 2016-05-10 | L.E. Jones Company | Iron-based alloys and methods of making and use thereof |
US9932867B2 (en) | 2013-09-19 | 2018-04-03 | L.E. Jones Company | Iron-based alloys and methods of making and use thereof |
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