A SUPER DUPLEX STAINLESS STEEL TIG WIRE
Getig 25.9.4L, ER 25.9.4
AWS/SFA 5.9: ER 25.9.4
Getig 25.9.4L is a tig wire designed to match similar alloys. The wire gives matching strength and corrosion resistance in the solution treated condition but can also be used in the as-welded condition. Nitrogen and nickel contents are controlled to give a balanced duplex structure to minimize the risk of cracking, particularly in highly restrained welds.
CHEMICAL ANALYSIS (RANGE) %
MECHANICAL PROPERTIES (RANGE)
Pumps and valves, corrosion / wear resisting parts and process equipment for use in offshore oil and gas industries, pulp, paper and textile industries, and chemical and petrochemical plant.
MATERIALS TO BE WELDED
In the solution treated condition the micro- structure is duplex with about 30-60% ferrite dependent upon dilution.
INTERPASS TEMPERATURE: 100°C max
HEAT INPUT : 0.5 - 1.5 kJ/mm
SCALING TEMPERATURE: Approx 850°C (air)
Very good resistance to pitting and stress corrosion cracking in Chloride containing environments. Pitting resistance in accordance with ASTM G-48A better than 40°C.