Ferritic stainless steel and ferritic stainless steel pipe with improved mechanical properties of welding portion
AssigneePosco
InventorsKye-Man Lee, Jae-Seok Park
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Abstract
A ferritic stainless steel with improved mechanical properties of weld zone is disclosed. The ferritic stainless steel includes, in percent (%) by weight of the entire composition, C: 0.005 to 0.02%, N: 0.005 to 0.02%, Cr: 11.0 to 13.0%, Ti: 0.16 to 0.3%, Nb: 0.1 to 0.3%, Al: 0.005 to 0.05%, the remainder of iron (Fe) and other inevitable impurities, and the ferritic stainless steel has a texture maximum strength of 30 or less in the {001} direction after welding.
Claims9
A ferritic stainless steel with improved mechanical properties of weld zone, the ferritic stainless steel comprising, in percent (%) by weight of the entire composition, C:
- 0.005 to 0.02%, N:
- 0.005 to 0.02%, Cr:
- 11.0 to 13.0%, Ti:
- 0.16 to 0.3%, Nb:
- 0.1 to 0.3%, Al:
- 0.005 to 0.05%, the remainder of iron (Fe) and other inevitable impurities, and
- the ferritic stainless steel has a texture maximum strength of 30 or less in the {001} direction after welding.
A ferritic stainless steel pipe comprising:
- a base material comprising, in percent (%) by weight of the entire composition, C:
- 0.005 to 0.02%, N:
- 0.005 to 0.02%, Cr:
- 11.0 to 13.0%, Ti:
- 0.16 to 0.3%, Nb:
- 0.1 to 0.3%, Al:
- 0.005 to 0.05%, the remainder of iron (Fe) and other inevitable impurities, and
- a weld zone having a texture maximum strength of 30 or less in the {001} direction.
Dependencies are inferred from the claim text.