Invention Grant
- Patent Title: High manganese steel pipe with step-out weld zone erosion-corrosion resistance and method of making the same
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Application No.: US16672960Application Date: 2019-11-04
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Publication No.: US11883906B2Publication Date: 2024-01-30
- Inventor: HyunWoo Jin , Ning Ma , Adnan Ozekcin , Andrew J. Wasson , Douglas P. Fairchild , IIWook Han , Sangchul Lee , Bongkeun Lee , Jongsub Lee
- Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY , POSCO
- Applicant Address: US NJ Annandale
- Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY,POSCO
- Current Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY,POSCO
- Current Assignee Address: US NJ Annandale; KR Pohang-Si
- Agency: Vorys, Sater, Seymour, and Pease LLP
- The original application number of the division: US15584860 2017.05.02
- Main IPC: B23K35/02
- IPC: B23K35/02 ; B23K35/30 ; B23K9/18 ; B23K9/23 ; C22C38/00 ; C22C38/02 ; C22C38/42 ; C22C38/44 ; C22C38/58

Abstract:
A metal cored wire for submerged arc welding, the wire comprising a steel sheath with a core comprising powders of: carbon in a range of about 0.3 wt. % to about 1.2 wt. %; silicon in a range of about 0.1 wt. % to about 3.0 wt. %; manganese in a range of about 9.0 wt. % to about 30 wt. %; chromium in an amount less than about 8 wt. %; nickel in an amount less than about 6 wt. %; molybdenum in an amount less than about 6 wt. %; tungsten in an amount less than about 5 wt. %; copper in an amount less than about 4 wt. %; niobium in an amount less than about 2 wt. %; vanadium in an amount less than about 2 wt. %; titanium in an amount less than about 2 wt. %; nitrogen in an amount less than about 0.4 wt. %; boron in an amount less than about 1 wt. %; at least one of: (i) sulfur in an amount less than about 0.3 wt. %; (ii) phosphorous in an amount less than about 0.03 wt. %; or a combination thereof; and the balance with iron.
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