MT 304H MIG & TIG

The MT 304H MIG & TIG welding wire from Metals And Welding Specialities is a premium-grade stainless steel filler metal designed for exceptional weld quality and performance in high-temperature service applications. Manufactured to meet the highest industry standards, this wire is engineered for precision and consistency, ensuring reliable results across diverse fabrication and maintenance operations. It conforms to UNS S30409 and complies with ASTM A240 Type 304H, the universal standard for heat-resistant austenitic stainless steels.

Developed for both MIG (GMAW) and TIG (GTAW) processes, MT 304H delivers a smooth, stable arc with minimal spatter, making it ideal for welding components exposed to elevated temperatures, such as heat exchangers, pressure vessels, and boiler parts. The higher carbon content of Type 304H enhances its high-temperature tensile and creep strength, maintaining structural integrity in service conditions that demand thermal stability. Its superior weld pool control and excellent bead appearance make it a preferred choice for industries requiring aesthetic weld finishes without compromising strength or corrosion resistance.

With outstanding resistance to oxidation and scaling up to 850°C (1560°F), MT 304H MIG & TIG provides dependable protection against corrosive environments containing hot gases or steam. It is particularly suitable for fabricating equipment used in refineries, petrochemical plants, and power generation systems where temperature fluctuations and corrosive media are common. The filler metal’s balanced chromium-nickel composition ensures superior resistance to intergranular corrosion and enhances weld toughness even after prolonged exposure to elevated temperatures.

At Metals And Welding Specialities, we prioritize metallurgical purity and precision manufacturing to produce filler materials that exceed performance expectations. Our MT 304H wires are vacuum melted and processed under stringent quality control standards to guarantee consistent chemistry, mechanical properties, and feedability. Whether you are performing critical root passes or multi-layer welds, this filler metal ensures stable deposition and optimum fusion characteristics across a range of stainless steels of similar composition.

This product also provides excellent compatibility when welding Type 304H base metals or joining other stabilized grades such as 321H and 347H, where high-temperature strength is crucial. With its high-quality formulation and proven reliability, MT 304H MIG & TIG is the professional’s choice for precision stainless steel welding applications demanding both mechanical durability and superior corrosion resistance.

For fabricators looking for consistent weld quality, clean bead appearance, and dependable performance, MT 304H MIG & TIG from Metals And Welding Specialities is the ideal choice. Engineered with precision metallurgy and optimized for modern welding applications, this wire guarantees high productivity, excellent corrosion resistance, and unmatched versatility across diverse industrial environments.

• Specification MT 304H MIG & TIG

  Classification	AWS ER308H
  Form	MIG spools, TIG cut lengths, Reels and Coils
  Type Of Welding	Inert Gas Welding
  Current	MIG-DCEP / TIG-DCEN
  Diameters	.023”, .030”, .035”, .045”, 1/16”, 3/32”, 1/8”
  Standard TIG straight lengths are available	36” (914 mm) or 39” (1000 mm) lengths. Other lengths available upon request.
  AWS ER308H MIG & TIG Filler Metal Application & uses	Hardware tools Metallurgy Machinery Construction Shipbuilding Petroleum Chemical plant Power sector Gas Industry

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