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15-5 PH stainless steel, also known as UNS S15500 or XM-12, is a variant of 17-4 PH. 15-5PH flanges are the low-carbon version of stainless steel alloy 304. Type 15-5 PH martensitic stainless steel is strong, corrosion resistant, mechanically well-performing at 600°F, and offers good toughness in both longitudinal and transverse directions. By briefly heating at low temperatures, scale and distortion are reduced.

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Stainless Steel 15-5 PH Flanges are used in a variety of sectors due to their different qualities. Corrosion resistance, pitting corrosion resistance, crevice corrosion resistance, and many more resistance properties are the characteristics of the flanges.

For products that need to be made of hard stainless steel, both 15-5 and 17-4 stainless steel are used in numerous different industries. 15-5 stainless steel is free of ferrite, which is the main distinction between the two alloys.

Characteristics of SS 15-5 PH Flanges:

The flanges have numerous additional characteristics. They maintain excellent ductility, high tensile strength, outstanding toughness, and stability in high temperatures. The performance at elevated temperatures is beyond expectations as it has a high thermal capacity. It improves weldability as it resists forming any carbon layer within the machine or device. This is possible because of the less carbon content it has.

Chemical composition of SS 15-5 PH Flanges:

Chromium, nickel, and copper are present in significant concentrations in 15-5 PH stainless steel. Tantalum, columbium, silicon, manganese, phosphorus, sulfur, and each of these elements in trace levels that do not exceed 1 percent of the compositional total may also be present.

Applications of SS 15-5 PH Flanges:

Flanges provide the major benefit of creep stress and rupture-free properties. It exhibits higher resistivity and flexibility. Avoiding carbide layer formation is a characteristic feature of Stainless Steel 15-5Ph Flanges, which protects machines from wearing. It also has great elongation capacity and high density, which enhances its mechanical power. It is used in industrial applications like aerospace machine making, expansion joints, waste treatments, etc.

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Standard Specification For 15-5 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.

15-5 Ph Flange Equivalent Grades

STANDARD WERKSTOFF NR. UNS
SS 15-5 PH 1.4545 S15500

15-5 Ph Flanges Chemical Composition

Grade C Mn Si S Ni Cr P Cu Mo
SS 15-5 PH 0.07 max 1.0 max 1.00 max 0.015 max 3.50 – 4.50 14.00 – 15.50 0.03 max 2.50 – 4.50 0.50 max

Mechanical Properties Of 15-5 Ph Flanges

Tensile Strength (ksi) Yield Strength 0.2% Proof (ksi) min Elongation Hardness
190 170 10 % 388

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