Phehlukwayo Metal, located in Cape Town, South Africa, is a reputable manufacturer and supplier of top-notch Stainless Steel 347H Hex Bars. These hex bars are celebrated for their impressive high-temperature strength, resistance to corrosion, and overall durability, making them perfect for the rigorous demands of industrial and engineering applications. At Phehlukwayo Metal, they prioritize precision in manufacturing, thorough heat treatment, and strict quality control to ensure that their products are both reliable and consistent. Their Stainless Steel 347H Hex Bars are particularly suited for components that require precise dimensions, mechanical strength, and resistance to oxidation, which is why they find extensive use in industries like aerospace, chemical processing, power generation, and petrochemicals.
The composition of Stainless Steel 347H Hex Bars mainly includes iron, with 17–19% chromium, 9–13% nickel, 0.04% carbon, and trace amounts of columbium (niobium) and tantalum for stabilization. This austenitic stainless steel is known for its exceptional high-temperature strength, outstanding corrosion resistance, and good weldability. In terms of mechanical properties, 347H Hex Bars boast a tensile strength ranging from 600–850 MPa, along with high yield strength and excellent ductility. Their unique blend of toughness, stability, and resistance to thermal fatigue makes them ideal for use in high-temperature and corrosive environments.
Dimensions : ASTM, ASME
Standard : ASTM / ASME SA A276, A479, ASTM A493
Length : Random, Fix & Cut Length
Size : 20MM to 150MM
| Element | C | Cr | Mn | Ni | P | S | Si |
| SS 347h | 0.08 max. | 17.0 – 19.0 | 2.00 max. | 9.0-13.0 | 0.045 max. | 0.03 max. | 0.75 max |
| Element | Density | Melting Range,℃ | Tensile Strength | Yield Strength | Elongation | Hardness (Brinell) |
| SS 347h | 7.96 | 1450 ℃ | 515 | 205 | 40 | 201 |
| HEXAGONS | ||
|---|---|---|
| Size(mm) | WT PER FEET IN KGS | WT PER MTR IN KGS |
| 16 | 0.55 | 1.79 |
| 18 | 0.69 | 2.27 |
| 20 | 0.85 | 2.80 |
| 22 | 1.03 | 3.39 |
| 25 | 1.33 | 4.38 |
| 28 | 1.67 | 5.49 |
| 30 | 1.92 | 6.30 |
| 32 | 2.19 | 7.17 |
| 36 | 2.77 | 9.07 |
| 38 | 3.08 | 10.11 |
| 40 | 3.41 | 11.20 |
| 45 | 4.32 | 14.18 |
| 50 | 5.34 | 17.50 |
| 56 | – | – |
| 60 | – | – |
| 65 | – | – |
| 70 | – | – |
| 75 | – | – |
| 80 | – | – |
| 90 | – | – |
| 100 | – | – |
SS 347H stainless steel contains high carbon content (0.04–0.10%), along with chromium (17–19%) and nickel (9–12%), which enhance its resistance to high temperatures and intergranular corrosion. Its stabilizing addition of tantalum or niobium prevents carbide precipitation, making it ideal for high-stress applications like hexagonal bars.
The high carbon content in SS 347H enhances its high-temperature strength and resistance to creep, making it suitable for extreme heat environments. Unlike lower-carbon steels, it stabilizes its microstructure, preventing carbide precipitation and improving oxidation resistance, which is crucial for high-temperature applications compared to other stainless steels like 304 or 316.
SS 347H Hex Bar is commonly used in the aerospace, chemical processing, and power generation industries. It is preferred for its excellent high-temperature resistance, resistance to intergranular corrosion, and stability in harsh environments. Its ability to withstand extreme temperatures and prevent carbide precipitation makes it ideal for critical applications.
You’ll find Stainless Steel 347H Hex Bars commonly used in the manufacturing of heat exchangers, furnace components, boiler tubes, chemical processing equipment, and aerospace parts. Their ability to resist high-temperature corrosion makes them a go-to choice for power generation, petrochemical facilities, and industrial machinery that face oxidizing and high-heat conditions. Additionally, they are utilized in structural and mechanical applications where dimensional stability, strength, and long-lasting performance are crucial. Phehlukwayo Metal’s Stainless Steel 347H Hex Bars deliver consistent quality, durability, and reliability, making them a trusted choice for demanding industrial and engineering needs.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Phehlukwayo Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Cape Town, South Africa
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