Harry E Deverell

US Patent:

41026772, Jul 25, 1978

Filed:

Dec 2, 1976

Appl. No.:

5/746972

Inventors:

Harry E. Deverell - Natrona Heights PA

Assignee:

Allegheny Ludlum Industries, Inc. - Pittsburgh PA

International Classification:

C22C 3844

US Classification:

75128A

Abstract:

A hot workable austenitic stainless steel of improved pitting and crevice corrosion resistance to the chloride ion. The steel consists essentialy of, by weight, from 18 to 20% chromium, 11 to 14% nickel, 3 to 4% molybdenum, up to 2% manganese, up to 0. 01% sulfur, up to 0. 1% of at least one element from the group consisting of cerium, calcium and magnesium, nitrogen from 0. 1% up to its solubility limit, up to 0. 08% carbon, up to 1% silicon, up to 1% columbium, up to 0. 3% vanadium, up to 0. 3% titanium, balance essentially iron.

US Patent:

44564830, Jun 26, 1984

Filed:

Jun 8, 1982

Appl. No.:

6/386362

Inventors:

Harry E. Deverell - Natrona Heights PA
Thomas H. McCunn - Lower Burrell PA

Assignee:

Allegheny Ludlum Steel Corporation - Pittsburgh PA

International Classification:

C22C 3840

US Classification:

75128N

Abstract:

A ferritic stainless steel characterized by superior toughness both prior to and after welding, and by superior crevice and integranular corrosion resistance. The steel consists essentially of, by weight, up to 0. 08% carbon, up to 0. 06% nitrogen, from 25. 00 to 35. 00% chromium, from 3. 60 to 5. 60% molybdenum, up to 2. 00% manganese, between 2. 00 and 5. 00% nickel, up to 2. 00% silicon, up to 0. 5% aluminum, up to 2. 00% of elements from the group consisting of titanium, zirconium and columbium, balance essentially iron. The sum of carbon plus nitrogen is in excess of 0. 0275%. Titanium, zirconium and columbium are in accordance with the following equation: %Ti/6+%Zr/7+%Cb/8. gtoreq. %C+%N.

US Patent:

40999661, Jul 11, 1978

Filed:

Dec 2, 1976

Appl. No.:

5/746968

Inventors:

Joseph A. Chivinsky - Sarver PA
Harry E. Deverell - Natrona Heights PA

Assignee:

Allegheny Ludlum Industries, Inc. - Pittsburgh PA

International Classification:

C22C 3816
C22C 3842
C22C 3858

US Classification:

75125

Abstract:

A hot workable austenitic stainless steel having superior pitting and crevice corrosion resistance to the chloride ion. The steel consists essentially of, by weight, from 19 to 23% chromium, 5 to 16% nickel, 3 to 5% molybdenum, 2. 5 to 15% manganese, up to 0. 01% sulfur, up to 0. 1% of at least one element from the group consisting of cerium, calcium and magnesium, nitrogen from 0. 2% up to its solubility limit, up to 0. 1% carbon, up to 1% silicon, up to 3% copper, up to 1% columbium, up to 0. 3% vanadium, up to 0. 3% titanium, balance essentially iron.

US Patent:

40438384, Aug 23, 1977

Filed:

Oct 7, 1976

Appl. No.:

5/730400

Inventors:

Harry E. Deverell - Natrona Heights PA

Assignee:

Allegheny Ludlum Industries, Inc. - Pittsburgh PA

International Classification:

C21D 713

US Classification:

148 2

Abstract:

An austenitic stainless steel alloy which has extremely good pitting resistance and at the same time has good hot-workability characteristics. The alloy contains, as essential constituents, chromium, nickel, molybdenum, calcium and cerium. In achieving the desirable characteristics of the invention, the molybdenum and chromium levels are important in determining pitting resistance; while recoveries of cerium and calcium in the final alloy are important in determining the hot-workability of the alloy, although cerium is the more important of the two. Sulfur levels are preferably maintained low, on the order of 0. 006% or less. Also disclosed is a method for making an alloy of the type described above wherein the finishing temperature of hot-rolled strip is maintained around or above 1800. degree. F to reduce edge cracking and preferably is maintained at about 2000. degree. F.

US Patent:

40070387, Feb 8, 1977

Filed:

Apr 25, 1975

Appl. No.:

5/571460

Inventors:

Harry E. Deverell - Natrona Heights PA

Assignee:

Allegheny Ludlum Industries, Inc. - Pittsburgh PA

International Classification:

C22C 3844

US Classification:

75122

Abstract:

An austenitic stainless steel alloy which has extremely good pitting resistance and at the same time has good hot-workability characteristics. The alloy contains, as essential constituents, chromium, nickel, molybdenum, calcium and cerium. In achieving the desirable characteristics of the invention, the molybdenum and chromium levels are important in determining pitting resistance; while recoveries of cerium and calcium in the final alloy are important in determining the hot-workability of the alloy, although cerium is the more important of the two. Sulfur levels are preferably maintained low, on the order of 0. 006% or less. Also disclosed is a method for making an alloy of the type described above wherein the finishing temperature of hot-rolled strip is maintained around or above 1800. degree. F to reduce edge cracking and preferably is maintained at about 2000. degree. F.

US Patent:

42110424, Jul 8, 1980

Filed:

Dec 22, 1978

Appl. No.:

5/972557

Inventors:

Harry E. Deverell - Natrona Heights PA

Assignee:

Allegheny Ludlum Steel Corporation - Pittsburgh PA

International Classification:

B24B 100

US Classification:

51281R

Abstract:

A method is provided for treating the weld area of a welded ferritic stainless steel article to increase the resistance to intergranular corrosion. This method comprises the step of grinding the torch side surface of the welded article at a substantially uniform depth along the length of the weld after the material has solidified in the weld area, with the cross sectional dimension of the grind extending beyond the weld-base metal interface on both sides of the weld area. In accordance with this method, the depth of grind is uniformly controlled within the range of from at least 0. 0005 inch as measured at the weld-base metal interface to less than 10% of the unground article thickness.

US Patent:

41252608, Nov 14, 1978

Filed:

May 17, 1976

Appl. No.:

5/687153

Inventors:

John Kanne - Ashtabula OH
Harry E. Deverell - Natrona Heights PA

Assignee:

True Temper Corporation - Cleveland OH

International Classification:

A63B 5312

US Classification:

273 80R

Abstract:

An improved precipitation hardening or maraging stainless steel for use in Tubular Sporting Implements, particularly golf shafts containing chromium, molybdenum and nickel, the sum of said chromium, molybdenum and nickel being at least 18% and not exceeding 25%, at least one element selected from the group consisting of aluminum and titanium in a maximum of 1. 30%, carbon in a maximum amount of 0. 06%, manganese 0. 50% maximum, silicon 0. 30% maximum, the balance being essentially iron and incidental impurities.

US Patent:

45256209, Jun 25, 1985

Filed:

Sep 15, 1982

Appl. No.:

6/418315

Inventors:

Harry E. Deverell - Natrona Heights PA
Jack M. Beigay - Freeport PA

Assignee:

Allegheny Ludlum Steel Corporation - Pittsburgh PA

International Classification:

B23K 923

US Classification:

219137WM

Abstract:

A method of welding ferritic stainless steel to austenitic stainless steel to form a corrosion-resistant welded article having a stabilized weld joint is provided. The ferritic steel contains 17 to 35% chromium and a total carbon and nitrogen less than the total carbon and nitrogen of the austenitic steel containing 16 to 29% chromium. The weld is stabilized with up to 4% stabilizer selected from the group consisting of titanium and columbium, and at least 0. 5% stabilizer when the weld deposit contains at least about 22% chromium or at least 30% total of chromium and three times the molybdenum content, and at least 0. 8% stabilizer for less than about 22% chromium or less than about 30% total of chromium and three times the molybdenum content. The source of the stabilizer may be the ferritic steel or austenitic steel or a weld filler metal. A corrosion-resistant welded article produced by the method is also provided, such as a ferritic stainless steel tube and austenitic stainless steel tubesheet.