00Cr25Ni6Mo2N, steel welding performance 00Cr25Ni7Mo3N
00Cr25Ni6Mo2N steel welded austenitic stainless steel with at 18-8, without preheating before welding, after welding without heat treatment is generally only when used under harsh conditions, the need for solution treatment after welding. Usually GTAW and SMAW welding method, the welding wire can be BX ingredients may also be used 310, Inconel wire system, when used in a corrosive environment may cause stress, preferably using the same ingredients with the base material or Inconel wire lines. And carbon steel and ferritic stainless steel commonly used 309-type dissimilar steel welding wire. When making manual welding, preferably than the base material with high nickel content of about 2% of the welding core, which can increase the number of austenitic weld metal, base metal and welded joints to ensure that there is a considerable overall performance.
Mechanical properties of the weld metal and welded joints are shown in Table 1 and Table 2.
Table 1 NTKR-4 mechanical properties of steel weld metal
Welding state σb / Mpa δ5 /% AK / J①
GTAW welding state 7602374
SMAW welding state 8202650

Note: ① Charpy impact value, V-shaped notch, -20 ℃
Table 2 NTKR-4 mechanical properties of steel welded joints
Welding thickness / mm state σb / Mpa AK / J①
Weld HAZ slotted slotted
Welding GTAW 10 states 7707067
Welding SMAW 10 states 7704550

Note: ① Charpy impact value, V-shaped notch, -20 ℃
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Welding performance stainless steel performance 00Cr25Ni6Mo2N 00Cr25Ni7Mo3N