Abex Corporation

Hugo R Larson

Herman A Fabert, Jr

John Tasker

Charles E Ridenour

Igor Y Khandros

Howard S Avery

Dilip K Subramanyam

Henry J Chapin

Chandi P Biswas

Austenitic (Hadfield) manganese steel containing about 25% manganese, 1.4% carbon and 0.1 to 1% silicon, balance essentially iron.

Manganese steel

Cast iron alloy preferably of about 1.6 carbon, 2 nickel, 2 molybdenum, 28 chromium, and up to 1 of an additional element, balance substantially iron characterized by a matrix substantially entirely of tempered martensite with minimal retained austenite, containing ferrite phases and primary chromium-rich carbides with substantially no secondary carbides.

Erosion and corrosion resistant cast iron alloy containing chromium,

A cast iron railroad brake shoe containing more than 2% phosphorus with sulfur and manganese present in the ratio of weight % sulfur&gt;weight % manganese/1.8; the amount of sulfur in excess of weight % Mn/1.8 accounts for increased wear resistance in proportion to said excess.

Cast iron railroad brake shoes

Ferrous metal casting of manganese steel susceptible to austenization to develop minimum yield strength of about 75,000 psi and elongation of about 30% min. consisting essentially of:

Castings

A consumable assembly consituting the source of metal for welding by the electroslag process, comprising a stainless steel guide sleeve, a tube of copper inside the guide sleeve, and a weld wire inside the copper tube.

Consumable guide tube assembly

Sections of cast manganese steel, or manganese steel to be interfaced to another steel, are joined by electroslag welding. Metallurgical limitations, operating parameters and physical attributes of the guide tube are imposed to retard embrittlement of the base metal and weld metal as well, to prevent tearing, to assure satisfactory ductility, and to preserve the integrity of the austenitic manganese steel in the weld metal.

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Ridgewood, NJ, United States of America

Hugo R Larson