Khaled Stainless, a trusted manufacturer and supplier located in Cairo, Egypt, specializes in high-performance Stainless Steel 347H Bolts that are built to withstand the rigors of high-temperature and high-pressure environments. SS 347H is a high-carbon, niobium-stabilized austenitic stainless steel, celebrated for its remarkable resistance to carbide precipitation and outstanding creep strength when exposed to prolonged heat. Khaled Stainless guarantees meticulous machining, precise threading, and adherence to international fastener standards, ensuring that their bolts retain structural integrity even in extreme conditions. These 347H Bolts find their place in petrochemical plants, refineries, chemical processing units, and power generation systems, where durability and dependable fastening are essential.
Stainless Steel 347H Bolts are composed of 17–19% Chromium, 9–13% Nickel, and a higher Carbon content compared to standard 347, along with stabilizing elements like Niobium/Tantalum to inhibit carbide formation during high-temperature service. This alloy boasts impressive tensile and yield strength, enhanced creep resistance, and robust oxidation stability. SS 347H maintains its toughness and structural reliability even under continuous heat and thermal cycling. Its austenitic structure ensures good ductility, weldability, and resistance to intergranular corrosion, making it a top choice for fastening components that face high stress and extreme temperatures.
Material | Specification | Standards | Size | Length |
Stainless Steel 347H Bolts | ASTM, ASME and API | ASTM B 193 / ASME SB 193 | M02 to M30 | 3 mm To 200 mm |
| Element | SS 347H |
| Tensile Strength (MPa) min | 480 |
| Yield Strength 0.2% Proof (MPa) min | 275 |
| Elongation (% in 50mm) min | 16 |
| Rockwell B (HR B) max Hardness | 95 |
| Brinell (HB) max Hardness | 201 |
| Element | SS 347H |
| Ni | 0.75 |
| C | 0.15 |
| Mn | 1.00 max |
| P | 0.04 max |
| S | 0.03 max |
| Si | 1.00 max |
| Cr | 11.5 – 13.5 |
| Mo | – |
| N | – |
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Stainless Steel 347H Bolts are high strength, heat resistant fasteners designed for extreme temperatures and hot environments. They provide excellent oxidation properties and durability, ideal for aerospace and industrial applications.
Custom Stainless Steel 347H Hex Bolt is a high heat resistance fastener with a hexagonal head, tailored to specific dimensions. Provides exceptional durability and resistance to extreme heat applications.
Stainless Steel 347H Leg Bolt is a durable high heat resistant fastener with a long threaded shaft and flat head, engineered for durability and stability in extremely hot conditions in
Stainless Steel 347H Expansion Anchor Bolt is a heat-resistant fastener for concrete or masonry. It expands in the hole as it tightens, providing a firm grip.
Stainless Steel 347H Hex Flange Head Bolt features a hexagonal head with an integrated flange for improved weight distribution. Provides superior thermal resistance and durability to extreme temperatures and environmental corrosion.
Stainless steel 347H fully threaded bolts have threads running the full length, for permanent clamping ability and superior heat resistance. They are ideal for demanding applications that require durability and heat resistance.
we prioritize quality and reliability by conducting rigorous in-house testing on all our products to ensure they meet the highest standards. Our comprehensive testing procedures include material and performance evaluations, ensuring optimal durability and performance. Additionally we offer third-party inspection services to provide further assurance to our customers. With a commitment to prompt delivery. We ensure that all orders are processed efficiently and shipped on time, meeting the needs of our clients without compromise.
Stainless Steel 347H Bolts are widely utilized in industries that demand high-temperature strength, resistance to thermal fatigue, and long-lasting stability. You’ll commonly find them in refinery heater systems, petrochemical piping, boiler equipment, heat exchangers, superheater and reheater sections, and high-pressure steam lines. They’re also essential in chemical processing plants, aerospace exhaust systems, industrial furnaces, and heavy-duty machinery that undergoes thermal cycling. SS 347H Bolts are the go-to solution for ensuring reliable performance in challenging environments.
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