Weston Stainless, Midland, UK, is a prominent supplier of stainless steel products of the highest quality, providing long-lasting and precision-crafted solutions to numerous industries. Stainless Steel 17-7 PH Flanges are produced using a precipitation-hardening chromium-nickel-aluminum alloy, which offers high strength, corrosion resistance, and superior fatigue properties. These flanges are available in numerous shapes, such as slip-on, weld neck, blind, socket weld, and threaded flanges, due to which they are suitable for aerospace, chemical, marine, and industrial purposes. The 17-7 PH grade features high hardness, superior wear resistance, and favorable formability to provide long service life in demanding conditions with high strength and toughness.
Stainless Steel 17-7 PH Flanges consist of 16-18% Chromium, 6.5-7.75% Nickel, 0.75-1.5% Aluminum, 0.09% Carbon, 1% Manganese, 1% Silicon, 0.04% Phosphorus, and 0.03% Sulfur. They have a tensile strength of up to 1034 MPa, a yield strength of 724 MPa, and an elongation of 6-10%, providing outstanding mechanical properties. They possess a physical density of 7.8 g/cm³, a melting temperature of 1400-1450°C, and a thermal conductivity of 16.3 W/m·K. Their properties make them suitable for uses that demand high strength, resistance to corrosion, and excellent fatigue life in harsh conditions.
| 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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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.
17-7 PH Flanges made from Stainless Steel include test certificates of Mill Test Certificates (MTC) to EN 10204/3.1, third-party inspection reports, and material traceability records for verifying quality and standards. They are packaged securely through wooden crates, protective plastic packaging, and anticorrosion coatings to guarantee safe transit to the destination. Delivery is ensured through air transport, sea routes, and by road, as well as expedited shipping at a safe speed to domestic or international customers.
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