Khaled Stainless, located in Cairo, Egypt, specializes in providing Stainless Steel 347 bars that are designed for high-temperature, corrosion-resistant, and weld-critical applications. These bars are manufactured with precise dimensional tolerances, clean surface finishes, and carefully controlled metallurgy, ensuring that the niobium-stabilized austenitic bars maintain stable mechanical performance even under continuous heat exposure. Khaled Stainless caters to refineries, petrochemical plants, boiler and heat-exchanger manufacturers, and heavy fabrication units, where standard 304/316 bars might struggle due to carbide precipitation or thermal degradation. With certified material traceability, consistent quality, and reliable delivery schedules, Khaled Stainless guarantees dependable bar stock for machining, fabrication, and high-temperature structural components.
Stainless Steel 347 is a niobium-stabilized austenitic alloy that contains around 17–19% chromium, 9–13% nickel, and controlled amounts of niobium to prevent carbide precipitation during welding or prolonged heat exposure. The carbon content is typically kept at ≤0.08%. Its mechanical properties include a tensile strength of about 515–750 MPa, yield strength of around 205–310 MPa, and elongation in the 30–40% range. This alloy is known for its excellent resistance to intergranular corrosion, good toughness, and strong thermal stability within the 425–900°C temperature range, outperforming non-stabilized grades in weld heat-affected zones and elevated-temperature service.
| 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 |
Mn |
N |
P |
C |
S |
Cr |
Mo |
Si |
Ni |
Other |
|
|
347 |
min. max |
2.00 |
– |
0.045 |
– 0.08 |
0.030 |
17.0 19.0 |
– |
0.75 |
9.0 13.0 |
Nb=10(C+N) 1.0 |
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 | ||||
347 | 515 | 205 | 40 | 92 | 201 |
Contact us to get a quick quote for your requirement.
We ensures that all stainless steel 347 frames are rigorously tested for quality and performance. Our products are tested for technical properties, corrosion resistance and durability. We assure customers of high industry standards and compliance, offering comprehensive certifications including Mill Test Certificates (MTC) and third-party inspections.
Corrosion-resistant product with high-temperature stability, available in diameters ranging from 0.5″ to 12″. Ideal for use in aerospace, chemical processing, and power generation industries where durability is essential.
This product features exceptional resistance to oxidation, available in thicknesses from 0.25″ to 6″ and widths up to 12″. Perfect for structural components and industrial applications.
Stainless Steel 347 Square Bars are Corrosion-resistant product designed for durability, offered in sizes from 0.5″ to 6″ on each side. Suitable for use in high-temperature environments and demanding industrial applications.
This Corrosion-resistant product with dimensions ranging from 0.5″ x 1″ to 6″ x 12″. Ideal for heavy-duty applications where strength and resistance to harsh conditions are required.
Stainless Steel 347 Hexagonal Bars are Corrosion-resistant product with sizes from 0.5″ to 4″ across flats. Used in aerospace and chemical industries, offering high performance in extreme environments.
Stainless Steel 347 T-Bars dimensions from 0.5″ x 0.5″ to 6″ x 6″. Suitable for structural support and applications requiring high-temperature resistance and reliability.
SS 347 bars are commonly utilized in high-temperature structural and fabrication applications where resistance to intergranular corrosion and thermal degradation is crucial. Typical applications include components for boilers, heat exchangers, furnace fixtures, refinery piping supports, petrochemical reactor internals, exhaust manifolds, thermal oxidizer frames, and equipment for handling steam in power plants.
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