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Class Information
Number: 420/72
Name: Alloys or metallic compositions > Ferrous (i.e., iron base) > Eight percent or more manganese containing
Description: Alloy or metallic composition which additionally contains 8 percent or more of manganese.










Sub-classes under this class:

Class Number Class Name Patents
420/74 Chromium containing 51
420/76 Copper containing 8
420/73 Nickel containing 47
420/75 Titanium containing 20


Patents under this class:

Patent Number Title Of Patent Date Issued
8647450 Lightweight and excellent ductile bead wire, method for producing the same and lightweight tire Feb. 11, 2014
8052924 High strength steel plate with high manganese having excellent burring workability Nov. 8, 2011
7799148 Method for producing austenitic iron-carbon-manganese metal sheets, and sheets produced thereby Sep. 21, 2010
7794552 Method of producing austenitic iron/carbon/manganese steel sheets having very high strength and elongation characteristics and excellent homogeneity Sep. 14, 2010
6908589 High manganese cast iron containing spheroidal vanadium carbide and method for making therof Jun. 21, 2005
6270593 Mn alloy materials for magnetic materials, Mn alloy sputtering targets, and magnetic thin films Aug. 7, 2001
5968449 Iron base Si--Mn alloy or iron base Si--Mn--Ni alloy having good crushability and alloy powder thereof Oct. 19, 1999
5910285 Austenitic acid corrosion-resistant stainless steel of Al-Mn-Si-N series Jun. 8, 1999
5891388 Fe-Mn vibration damping alloy steel having superior tensile strength and good corrosion resistance Apr. 6, 1999
5529604 Modified stainless steel powder composition Jun. 25, 1996
5425820 Oriented magnetic steel sheets and manufacturing process therefor Jun. 20, 1995
5114669 Ferromagnetic materials May. 19, 1992
5082748 Fe-Mn alloy plated steel sheet and manufacturing method thereof Jan. 21, 1992
5069871 Method of using an austenitic steel alloy as a wear part subject to gouging abrasion type metal loss Dec. 3, 1991
4944814 Aluminum-manganese-iron steel alloy Jul. 31, 1990
4875933 Melting method for producing low chromium corrosion resistant and high damping capacity Fe-Mn-Al-C based alloys Oct. 24, 1989
4855105 Wear-resistant steel Aug. 8, 1989
4847046 Ultra-low temperature alloy and process for manufacturing the same Jul. 11, 1989
4842657 Amorphous alloys containing iron group elements and zirconium and particles made of said alloys Jun. 27, 1989
4788034 Age hardenable maetensitic steel Nov. 29, 1988
H326 Mn-Fe base and Mn-Cr-Fe base austenitic alloys Sep. 1, 1987
4662937 Process for production of high-manganese iron alloy by smelting reduction May. 5, 1987
4623387 Amorphous alloys containing iron group elements and zirconium and articles made of said alloys Nov. 18, 1986
4612067 Manganese steel Sep. 16, 1986
4576638 Process for the production of ferromanganese Mar. 18, 1986
4531974 Work-hardenable austenitic manganese steel and method for the production thereof Jul. 30, 1985
4475961 High remanence iron-manganese alloys for magnetically actuated devices Oct. 9, 1984
4425169 Austenitic-manganese steel Jan. 10, 1984
4377422 Hadfield's steel containing 2% vanadium Mar. 22, 1983
4373951 Nonmagnetic steels having low thermal expansion coefficients and high yield points Feb. 15, 1983
4358315 Manganese steels Nov. 9, 1982
4329172 High manganese nonmagnetic steel having excellent machinability May. 11, 1982
4240827 Nonmagnetic alloy steel having improved machinability Dec. 23, 1980
4221592 Glassy alloys which include iron group elements and boron Sep. 9, 1980
4207381 Bimetal and method for manufacturing the same Jun. 10, 1980











 
 
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