Heat Resisting Steel Boiler Tube/Pipe Submerged Arc Welding Material NF-250×Y-511

Characteristics

NF-250 is a high basic type flux and chemical composition rarely changes even in multi-layer welding. The slag is extremely easy to remove in one-layer one-pass or one-layer two-pass multi-layer narrow gap welding. The weld metal shows excellent toughness.

Applications

Narrow gap welding of 1 to 1.25%Cr-0.5%Mo heat resisting steel for boiler drums, main steam tubes, superheated steam tubes and chemical engineering apparatus.

NF-250×Y-511
  • JIS Z 3183 S642-1CM☆
  • AWS A5.23 F8P2-EG-B2☆

Downloads

  • Not all product sizes have been certified.
  • Approvals are updated from time to time, but in case of expiration or cannot find it, please inquiry via contact us.
  • ☆It means that the product meets the classification requirements but that the JIS Mark system and AWS are not authentication to the classification by third parties.
  • ★It means that the product meets most of the classification requirements. However, there is for example a partial deviation in chemical composition etc.

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