Lecong Stainless is a reputable manufacturer and supplier based in Da Nang, Vietnam, specializing in high-quality Stainless Steel 347H Bars. These bars are celebrated for their impressive high-temperature strength, resistance to corrosion, and exceptional durability over time. Stainless Steel 347H is a titanium-stabilized austenitic stainless steel, specifically engineered to combat intergranular corrosion and uphold mechanical integrity even when exposed to high temperatures for extended periods. Crafted with precision to meet international standards, these bars are perfect for critical applications in power generation, chemical processing, and industrial machinery. Lecong Stainless is committed to delivering consistent quality through advanced production methods and rigorous quality control.
The composition of Stainless Steel 347H Bars primarily includes iron, chromium (17–19%), nickel (8–12%), titanium for stabilization, along with manganese, silicon, and a controlled amount of carbon. The titanium stabilization plays a crucial role in preventing carbide precipitation during welding, which boosts corrosion resistance and preserves mechanical strength at elevated temperatures. In terms of mechanical properties, these bars boast a tensile strength ranging from 515 to 750 MPa, a yield strength between 205 and 275 MPa, and outstanding creep and oxidation resistance at temperatures reaching up to 700°C. The austenitic microstructure contributes to their toughness, dimensional stability, and long-lasting durability in challenging thermal and chemical conditions.
| Specifications | ASTM A276 / ASME SA276 |
| Dimensions | ASTM, ASME |
| Range | 3.17 MM TO 350 MM DIA |
| Diameter | 25mm to 152mm |
| Length | 1 to 6 Meters, Custom Cut Length |
| Finish | Bright, Polish & Black |
| Form | Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wiremesh, Billet, Ingot, Forging |
| Condition | Cold Drawn & Polished Cold Drawn, Centreless Ground & Polished |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 347H | min. | 0.04 | – | – | – | – | 17.0 | 3.00 | 9.0 | – |
| max. | 0.10 | 2.0 | 1.00 | 0.045 | 0.030 | 19.0 | 4.00 | 13.0 | – | |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 347H | 515 | 205 | 40 | 92 | 201 |
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At Lecong Stainless quality matters. Our Stainless Steel 347H Bars undergo rigorous testing, including tensile strength hardness, corrosion resistance tests so as to be in international standards. We have credible agencies certified thus we furnish material test certificates (MTCs) and third-party inspections. Ensuring reliability and unmatched performance in critical industrial applications.
Stainless Steel 347H Round Bars offer excellent corrosion resistance. Available in sizes ranging from 3mm to 200mm in diameter, these bars are ideal for applications in high-temperature environments due to their stability and durability.
These bars provide outstanding resistance to corrosion and oxidation. Stainless Steel 347H Flat Bars come in thicknesses from 1mm to 50mm and widths from 10mm to 500mm, making them suitable for a variety of industrial uses.
Stainless Steel 347H Square Bars are perfect for high-stress applications. Available in sizes from 5mm to 100mm, they combine excellent mechanical properties with superior resistance to intergranular corrosion.
These bars are highly resistant to corrosion and scaling. Stainless Steel 347H Rectangular Bars are available in thicknesses from 1mm to 50mm and widths from 10mm to 500mm, ideal for structural and mechanical applications.
Stainless Steel 347H Hexagonal Bars offer excellent resistance to high temperatures and corrosion. Available in sizes ranging from 6mm to 75mm, they are widely used in the manufacturing of fasteners and other high-strength components.
These corrosion-resistant bars are available in a range of sizes. Stainless Steel 347H T-Bars provide excellent mechanical strength and are ideal for structural applications requiring high resistance to oxidation and corrosion.
Stainless Steel 347H Bars find extensive use in industries that demand materials with high-temperature strength and corrosion resistance. They are commonly utilized in boilers, heat exchangers, pressure vessels, and components for furnaces. In the chemical and petrochemical sectors, these bars are essential for reactor parts, process equipment, and high-temperature piping. Their remarkable mechanical properties also make them ideal for applications in power generation, aerospace, and marine industries. Furthermore, Stainless Steel 347H Bars are used in food processing and pharmaceutical equipment, where both high-temperature stability and corrosion resistance are vital. Their strength and reliability make them a top choice for various demanding applications.















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