At Adinox Overseas, we take immense pride in being a trusted name in the supply and export of premium-grade 17-4 PH Flanges. These flanges are made from precipitation hardened stainless steel, also known by its universal standard name ASTM A564 Grade 630, and are designated by the UNS number UNS S17400. Renowned for their high strength, excellent corrosion resistance, and superior mechanical properties, our flanges are widely used across industries such as petrochemicals, aerospace, marine, nuclear, paper & pulp, and food processing.

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The 17-4 PH Stainless Steel Flanges offered by Adinox Overseas are manufactured using the highest quality raw materials and advanced technology, ensuring dimensional accuracy, longevity, and resistance to fatigue and stress corrosion cracking. These flanges provide outstanding toughness and hardness even in severe environments. The precipitation hardening process provides remarkable tensile strength and hardness without compromising corrosion resistance, making them ideal for critical applications where strength and durability are key.

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UNS S17400 stainless steel exhibits good weldability and machinability, which adds to its industrial value. The flanges are available in multiple configurations including slip-on, weld neck, blind, threaded, and socket weld types to suit the precise demands of various piping systems. Being a part of the ASTM A564 specification, these flanges are produced under strict international standards to meet global requirements. Adinox Overseas ensures every piece is quality tested and delivered with proper documentation, including Material Test Certificates (MTC) and compliance with NACE MR0175, EN10204 3.1 or 3.2 as requested.

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Adinox Overseas is committed to excellence, innovation, and timely delivery. We cater to customized requirements and supply flanges in a range of sizes, pressure classes, and face types such as RF, RTJ, and FF finishes. Our global clientele values our consistency, precision engineering, and customer-focused approach, which sets us apart in the stainless steel flange market.

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Specifications Of 17‐4 PH Flanges

Specifications	ASTM A182 / ASME SA 182
Standard	ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092
Pressure Rating	Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
Size	1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000
Flange EN	6Bar 10Bar 16Bar 25Bar 40Bar
Coating	Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized
Common Types	Forged / Threaded / Screwed / Plate
Face Type	Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove
Test Certificates	EN 10204/3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report etc.

Chemical Composition for 17‐4 PH Flanges

Grade	C	Mn	Si	P	S	Cr	Mo
SS 17-4PH	0.07 max	1.0 max	1.0 max	.07 max	.03 max	17.5 - 15.0	.05

Mechanical Properties Of 17‐4 PH Flanges

Ultimate Tensile Strength, psi	Yield Strength, psi	Elongation	Rockwell Hardness
160,000	145,000	5%	C35

Application Of Industries

Power Plants

Aerospace

Refineries

Construction

Oil & Gas

Sugar

Chemical

Petrochemical

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