LongTeng E308LT1-1 Stainless Steel Flux-Cored Welding Wire

The LongTeng E308LT1-1 Stainless Flux-Cored Wire

Stainless fabrication shops value flux-cored wire because it brings the productivity of a continuous process to austenitic steel while giving a slag that supports the pool and washes the bead smooth. LongTeng E308LT1-1 is the 308L-type flux-cored wire in the Jiangsu Longteng Special Steel Group catalogue, listed by the manufacturer under AWS A5.22 as E308LT1-1. It is intended for joining austenitic stainless steels of the 18 percent chromium and 8 to 10 percent nickel family, and the catalogue application text names the Chinese grades 06Cr19Ni10 and 07Cr19Ni11Ti, together with 301, 302, 304, 301L, 308 and 308L, with a working temperature below 300 degrees Celsius.

Seven Star LLC supplies LongTeng E308LT1-1 to process-plant fabricators, tank and vessel shops and maintenance contractors in Oman and the GCC, with engineering support in Muscat. The figures on this page are typical values listed by the manufacturer, not guaranteed limits, and the test certificate of a delivered lot remains the document of record.

Decoding E308LT1-1

This is general class information on the AWS A5.22 system and not a LongTeng promise. E marks an electrode and 308L names the deposit composition, a low-carbon version of the classic 18-8 stainless. The letter T shows a tubular wire, the first 1 indicates all-position capability, and the final 1 states that the wire is classified with 100 percent carbon dioxide shielding gas. The same class is available in variants for argon and carbon dioxide mixtures, but the catalogue lists only carbon dioxide for this entry, with a gas flow of 20 to 25 litres per minute.

The L in the name means low carbon. Keeping carbon at or below roughly 0.04 percent limits the precipitation of chromium carbides at grain boundaries, which otherwise cause sensitisation and intergranular corrosion in the heat-affected zone. The listed analysis shows carbon at 0.022 percent, comfortably in that region.

Chemistry and Ferrite Considerations

The catalogue gives carbon 0.022, manganese 1.74, silicon 0.60, phosphorus 0.016, sulphur 0.003, nickel 10.35, chromium 18.77, molybdenum 0.034 and copper 0.08, all in percent. In LongTeng E308LT1-1 a chromium to nickel pair of 18.77 and 10.35 is the typical balance for a deposit that solidifies as austenite with a few percent of delta ferrite. That ferrite is useful, as it absorbs impurities and resists hot cracking during solidification. Very low sulphur at 0.003 percent further assists crack resistance. Because ferrite content cannot be derived from this table alone, a project that sets a ferrite number requirement should request the measured value from the supplier.

Mechanical Values

For LongTeng E308LT1-1 the manufacturer prints a tensile strength of 550 MPa and an elongation of 43.5 percent. No yield strength or impact energy is printed. The high elongation is normal for austenitic weld metal, which stays ductile and tough down to very low temperatures, but this page does not quote a toughness figure because the catalogue does not give one.

Listed Operating Data

Two diameters are listed. The 1.2 mm wire runs at 160 to 240 A and the 1.6 mm wire at 180 to 270 A, both on DC electrode positive with carbon dioxide at 20 to 25 litres per minute. These current ranges are lower than those for carbon steel wires of the same diameter because stainless steel has lower thermal conductivity and higher electrical resistance, so heat builds up quickly in the joint and distortion becomes the main concern.

Practical Strengths of LongTeng E308LT1-1

• LongTeng E308LT1-1 is classified, as listed, to AWS A5.22, the specification for stainless flux-cored wires used on pressure parts and process piping.
• Low carbon at 0.022 percent protects the heat-affected zone against sensitisation.
• The 10.35 percent nickel and 18.77 percent chromium match the base metals named in the catalogue.
• Elongation of 43.5 percent at 550 MPa tensile strength shows a ductile austenitic deposit.
• Both 1.2 and 1.6 mm diameters can serve fabrication in positions from flat to overhead, subject to technique.
• Carbon dioxide shielding avoids the cost of argon blends in shops that weld stainless in volume.
• Sulphur at 0.003 percent is very low and supports resistance to hot cracking.

Where LongTeng E308LT1-1 Is Used in Oman and the GCC

Stainless steel is everywhere in the Gulf region because of coastal humidity, chloride exposure and hygiene requirements. Typical consumers of 308L-type deposits include desalination plant pipework, food and beverage tanks, dairy and bottling lines, chemical storage vessels, heat exchanger shells, handrails and architectural cladding. Fabricators at Sohar and Salalah and in the Rusayl and Muscat industrial areas weld such components daily, and a flux-cored wire allows thicker sections to be filled quickly. The manufacturer limit of 300 degrees Celsius working temperature should be respected, because prolonged exposure above that region is outside the catalogue scope for this grade.

Seven Star LLC can help you match LongTeng E308LT1-1 with your base metal and procedure. State the steel grade, thickness, position and any ferrite or corrosion test requirement in your enquiry. No third-party approval is claimed on this page, and the certificate for the lot should be requested before the wire is purchased.

Fabrication Tips for Stainless Flux-Cored Wire

These are general welding recommendations. Use dedicated stainless brushes and grinding discs so that carbon steel particles do not contaminate the joint. Control interpass temperature, since overheating encourages distortion and carbide precipitation. Clean slag completely and pickle or passivate the finished weld to restore the protective oxide film. Keep spools dry and covered, and avoid dust and oil on the wire surface.

Technical Specifications of LongTeng E308LT1-1

This table lists the typical values published by the manufacturer for LongTeng E308LT1-1.

Machines and Heat Control for Stainless

Stainless welds distort when heat builds, so a stable power source helps. Seven Star LLC supplies the Lincoln Electric Power Wave S500 and the ESAB Rebel EMP 285ic for wire-fed work, and the FLIR E96 thermal camera makes it simple to watch interpass temperature on thin stainless sections.

How to Order

Send Seven Star LLC the diameter, quantity and delivery location for LongTeng E308LT1-1 and our Muscat team will answer with availability and lot documents. The attached catalogue extract is the LongTeng E308LT1-1 datasheet, so your quality department can review it before you raise a formal request for quotation for your stainless project in Oman or the GCC.