Nestled in the heart of Naypyidaw, Kyaw Stainless stands as a trusted partner for industrial needs, specializing in high-performance components. We take pride in our expertise with Stainless Steel 17-7 PH Flanges, a product line engineered for demanding situations. Our commitment is to provide not just a product, but a reliable solution backed by local knowledge and a dedication to quality, ensuring your projects benefit from materials that offer exceptional strength and corrosion resistance right here in Myanmar.
The unique strength of 17-7 PH stainless steel comes from its specific composition, primarily chromium and nickel, with a crucial addition of aluminum. This allows it to be heat-treated, or precipitation hardened, transforming it from a ductile state into an incredibly strong one. Through this process, these flanges achieve remarkable mechanical properties, including very high tensile strength and excellent hardness, all while maintaining good corrosion resistance. This makes them far stronger than standard austenitic stainless grades without becoming brittle.
| 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 | |
|---|---|---|---|---|---|---|---|---|---|
| 17-7 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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Exceptional strength, durability, and corrosion resistance for demanding applications. Designed for seamless transitions between different pipe sizes, these flanges ensure reliable performance and longevity.
High strength and resistance to corrosion, ideal for demanding environments. Engineered for durability and performance, they provide a secure connection between pipes.
Engineered for high strength and corrosion resistance. Their precision design ensures a tight, leak-proof seal, making them ideal for critical, high-pressure applications.
Combine high strength and excellent corrosion resistance. Designed for rigorous applications, they ensure secure, reliable connections in high-pressure environments.
Exceptional strength and resistance to high temperatures and corrosion. Perfect for critical applications, they provide robust, reliable connections with precision-engineered surfaces.
Superior strength and corrosion resistance, ensuring reliable performance in demanding conditions. Their raised face design enhances sealing for secure, high-pressure connections.
Stainless Steel 17-7 PH Flanges are extensively employed where high strength, corrosion, and superior fatigue properties are demanded. They are employed in aerospace structural parts, aircraft engines, and landing gear. Chemical and petrochemical industries take advantage of them for pipelines, pressure vessels, and heat exchangers because of their chemical resistance. They are also applied in marine usage, defense devices, and industrial equipment where a high resistance to wear is required. They are also used in power plants, food processing, and medical devices, providing stable performance in tough conditions.
Because of their unique combination of strength and corrosion resistance, 17-7 PH flanges are indispensable in challenging environments. You’ll find them confidently performing in aerospace components, critical chemical processing equipment, and high-pressure oil and gas systems. They are also ideal for pulp and paper manufacturing and various high-stress mechanical applications where standard stainless steels would fail. Essentially, whenever a project calls for a flange that must withstand significant pressure, aggressive chemicals, or high temperatures, 17-7 PH is often the material of choice for long-term reliability.







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