Harsh Metalloys stands out as a top manufacturer and supplier of Stainless Steel 17-7 PH Flanges, proudly based in Mumbai, India. This particular stainless steel is a precipitation-hardening martensitic alloy, celebrated for its remarkable strength, resistance to corrosion, and decent ductility. These flanges are designed to excel in tough environments where high mechanical strength and resistance to stress corrosion cracking are essential. Harsh Metalloys provides a diverse selection of 17-7 PH flanges—including weld neck, slip-on, blind, socket weld, and threaded options—crafted according to international standards like ASTM A693 and ASME B16.5, catering to industries such as aerospace, chemical, and power generation.
When it comes to composition and mechanical properties, Stainless Steel 17-7 PH Flanges generally contain 16–18% chromium, 6–7% nickel, and 4–5% aluminum, along with trace amounts of iron, copper, and carbon. These flanges deliver impressive tensile strength ranging from 850 to 1100 MPa, yield strength between 690 and 1000 MPa, and outstanding toughness post-heat treatment. They also exhibit strong resistance to stress corrosion cracking, fatigue, and moderate corrosion, particularly in mildly corrosive environments. The combination of high strength and ductility in 17-7 PH flanges makes them ideal for high-performance applications that demand durability and structural integrity.
| 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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DIN 1.4542 British Standard 17-7 PH pipe flanges combine high strength and excellent corrosion resistance. Designed for rigorous applications, they ensure secure, reliable connections in high-pressure environments.
Steel 17-7 PH forging facing flanges offer exceptional strength and resistance to high temperatures and corrosion. Perfect for critical applications, they provide robust, reliable connections with precision-engineered surfaces.
ASME B16.5 SS 17-7PH raised face flanges deliver 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 widely used in various fields like aerospace, chemical processing, marine engineering, and power generation. Thanks to their excellent mechanical properties, they’re perfect for high-pressure piping systems, heat exchangers, valves, and pressure vessels. These flanges hold up well in situations where thermal cycling, stress corrosion, and moderate chemical exposure are a concern. Industries that need lightweight, strong, and corrosion-resistant parts—like aircraft manufacturing, petrochemical refineries, and nuclear reactors—often choose them. The durability and reliability of 17-7 PH flanges guarantee a long service life, even in the most demanding operational conditions.
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