Njabulo Stainless stands out as a top-notch manufacturer and supplier of Stainless Steel 17-4 PH flanges right in Cape Town, South Africa. Known for their precision engineering and commitment to high-quality materials, Njabulo Stainless caters to a diverse array of industries with flanges that are not only corrosion-resistant but also durable and high-performing. The company expertly blends advanced manufacturing techniques with skilled craftsmanship to ensure they meet both local and international standards. Trusted by sectors like aerospace, petrochemical, and marine, Njabulo Stainless provides customized flange solutions that tackle even the toughest project demands, all while guaranteeing timely delivery and outstanding customer support throughout South Africa and beyond.
The Stainless Steel 17-4 PH flanges produced by Njabulo Stainless are primarily made of iron, featuring 15–17.5% chromium, 3–5% nickel, and 3–5% copper. This precipitation-hardened alloy is known for its impressive strength and decent corrosion resistance. With a tensile strength that can reach up to 1100 MPa and hardness levels hitting HRC 44, it retains its mechanical properties in both high and low temperatures. The alloy’s remarkable fatigue resistance and excellent machinability after heat treatment make it a go-to choice for high-performance applications that demand strength and minimal distortion.
| SS 17-4PH Flange Standard | ASTM A182 / ASME SA182 |
| SS 17-4 PH Flange Grade | SS 17-4PH / UNS S17400 / WERKSTOFF NR. 1.4542 |
| SS 17-4PH Flange Size Range | 1/2″ TO 48″ (15NB to 1200NB) Custom Sizes |
| SS 17-4 PH Flanges Class | Class 150, Class 900, Class 1200, Class 300, Class 600, Class 1500, Class 2500, / PN6, PN25, PN10, PN16, PN40, PN64, etc. |
| SS 17-4PH Flange Dimension | B16.48, B16.47 A & B, ASME/ANSI B16.5, BS4504, ASME Flanges, DIN Flanges, BS Flanges, ANSI Flanges, EN Flanges, BS 10, EN-1092, DIN, GOST Flange, ANSI/ASME B16.5, 16.47A, 16.47B, 16.36, MSS S44, API605, API7S-15, API7S-43, JISB2220, ISO70051, EN1092, BS1560-3.1, |
| SS 17-4 PH Flanges DIN | DIN 2576, DIN 2632, DIN 2637, DIN 2638, DIN 2636, DIN 2641, DIN 2527, DIN 2635, DIN 2655, DIN 2566, DIN 2629, DIN 2656, DIN 2573, DIN 2633, DIN 2642, DIN 2634, DIN 2631, DIN 2627, DIN 2673, DIN 2628 |
| Types of SS 17-4PH Flanges | Screwed (Threaded) Flanges, Spectacle Blind Flanges, Forged Flanges, Socket-weld Flanges (SWRF), Spacer & Blind Flanges, Ring Type Joint Flanges (RTJ), Plate Flanges, Slip-on Flanges (SORF), Blind Flanges (BLRF), Industrial Flanges, Flat Face Flanges, Raised Face (RF) Flanges, Custom Flanges, Orifice Flanges, Reducing Flanges, Large Diameter Flanges, Drawing Flanges, Lap Joint Flanges (SOLJ), Long weld neck Flanges (LWNRF), Weld neck Flanges (WNRF), etc. |
| Grade | Mn | Si | Cr | Ni | Fe | C | S | P | |
|---|---|---|---|---|---|---|---|---|---|
| 17-4 PH | min. | 1.0 | 1.0 | 15.0 | 3.0 | – | – | – | – |
| max. | 1.0 | 1.0 | 17.5 | 5.0 | 73 | 0.070 | 0.030 | 0.040 | |
| Properties | Metric | Imperial |
|---|---|---|
| Density | 7.75 g/cm3 | 0.280 lb/in3 |
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DIN 1.4542 British Standard 17-4 PH pipe flanges combine high strength and corrosion resistance, meeting rigorous performance standards. They ensure reliable, leak-proof connections for demanding industrial applications.
Steel 17-4 PH forging facing flanges provide exceptional durability and strength for high-pressure applications. Designed for critical environments, they offer reliable performance with superior corrosion resistance and precise alignment.
ASME B16.5 SS 17-4 PH raised face flanges deliver high strength and corrosion resistance for demanding applications. Their raised face design ensures a secure, leak-proof seal, meeting stringent industry standards.
After production every Stainless Steel 17-4 PH Flange is meticulously tested by our quality control team using advanced destructive and non-destructive techniques to verify its strength and reliability. To ensure safe transit the flanges are securely packed with premium materials. We are committed to delivering orders promptly and efficiently, ensuring a smooth experience for our customers. All required documents are included with the delivery to provide complete transparency and assurance.
Njabulo Stainless’s Stainless Steel 17-4 PH flanges are widely utilized across various industries thanks to their high strength, corrosion resistance, and outstanding toughness. In the aerospace sector, they find their place in structural components and engine parts. In oil and gas, they are essential for valves and pumps that operate in harsh environments. They also excel in chemical processing, nuclear reactors, and marine hardware. Their reliability under extreme pressure and temperature conditions makes them the preferred option for critical infrastructure projects where performance and durability are absolutely essential. Njabulo Stainless ensures that each flange meets exacting operational standards.
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