Nikko Steel Kawat Las Elektroda For Ferritic, Austenitic and Duplex Stainless Steels NSB-17.4 Cu R

Brosur & Katalog Produk / Brosur & Katalog Produk

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1. MANUFACTURERS OF A DIVERSE RANGE OF ADVANCED WELDING CONSUMABLES SECTION 6 NSB-17.4 Cu R FOR WELDING MARTENSITIC PRECIPITATION HARDENING STAINLESS STEELS DATA SHEET NO. 80 SPECIFICATION AWS A5.4 CLASSIFICATION E630-26 PRODUCT DESCRIPTION A special rutile based flux with a positive ratio of chemically basic minerals to acid minerals that contains all the major alloying elements is extruded onto a high purity ferritic wire. The use of balanced silicates ensures both strength of coating and resistance to moisture absorption. WELDING FEATURES OF THE ELECTRODE The arc stability is excellent on both AC and DC+ as is the electrodes ability for initial arc strike and re-striking. Spatter is minimal and the slag is readily detachable leaving smooth evenly rippled seams of pleasing appearance. Metal recovery is some 130% with respect to weight of the core wire. Pre-heat and interpass temperature should be 200 º C max. APPLICATIONS AND MATERIALS TO BE WELDED Applications occur in the gas, oil, marine and petrochemical industries for shafts, pumps, etc when the following materials are involved. ASTM A564 Grade 630 A747 CB 7Cu (cast) UNS S 17400 Proprietary 17-4PH (Armco Steel) Custom 630 (Carpenter) WELD METAL ANALYSIS COMPOSITION % BY Wt. C Mn Si S P Cr Ni Mo Cu Nb +Ta Fe MIN - 0.25 - - - 16 4.5 - 3.25 0.15 MAX 0.05 0.75 0.75 0.03 0.04 16.75 5.0 0.75 4.0 0.30 TYPICAL 0.03 0.6 0.3 0.02 0.02 16.5 4.8 0.2 3.5 0.2 Bal. WELD METAL PROPERTIES (ALL WELD METAL) PROPERTY UNITS MIN. TYPICAL PWHT Tensile strength N/mm 2 930 1035 0.2% Proof stress N/mm 2 - 635 Elongation on 4d % 7 10 Reduction of Area (RA) % - 24 750ºC/2 HOURS A/C 25ºC THEN 550ºC 2 HOURS –A/C PROPRIETORY PWHT PREFERENCE IS OVER-AGED AS STATES WELDING AMPERAGE AC or DC+ Ø (mm) 2.0 2.6 3.2 4.0 5.0 MIN 35 65 80 120 160 MAX 80 100 125 170 210 OTHER DATA Electrodes that have become damp should be re-dried at 150 o C for 30 mins. RELATED PRODUCTS Please contact our Technical Department for detail. WI-0304 DS80 NSB-17.4 Cu R, Rev. 1, Date 01.10.2010

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