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Stainless Steel 309H Flanges

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Easy Installation

Strong Durability

Cost
Effective

Heat Resistance

Excellent Weldability

Corrosion Resistance

Hudson Flanges is a leading manufacturer and supplier of high-quality flanges in the Midland region of the UK. With a strong commitment to excellence, we provide a wide range of flanges, including stainless steel 309H flanges, designed for superior performance in various industries. Our stainless steel 309H flanges offer exceptional resistance to high temperatures, corrosion, and oxidation, making them ideal for critical applications in oil and gas, chemical processing, and power generation. Trust Hudson Flanges for reliable, durable solutions.

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Stainless Steel 309H Blind Flanges in UK

Stainless Steel 309H Blind Flanges

Stainless Steel 309H Slip on Flanges in UK

Stainless Steel 309H Slip on Flanges

Stainless Steel 309H Lap Joint Flanges in UK

Stainless Steel 309H Lap Joint Flanges

Stainless Steel 309H Flanges are primarily composed of iron, with high chromium (22-24%) and nickel (12-15%) content, providing excellent resistance to oxidation and corrosion at high temperatures. The mechanical properties include high strength, tensile strength of around 515 MPa, and a yield strength of 205 MPa. The advantages of 309H flanges include superior heat and thermal fatigue resistance, enhanced strength at elevated temperatures, excellent weldability, and resistance to oxidation and scaling in extreme environments, making them ideal for use in high-temperature applications such as furnaces and heat exchangers.

Table of Contents

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Stainless Steel 309H Flanges Specification

Specifications ASTM A182 / ASME SA182
Flange size range 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000
Flanges Dimensions ANSI/ ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Flanges Standard ANSI Flanges, AWWA Flanges, ASME Flanges, BS 10 Table D Flanges, Table E Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flanges.
Pressure Class / Rating Class 150 LBS, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Connect Type/ Flange Face Type Raised Face (RF), Ring Type Joint (RTJ), Large Male-Female (LMF), Flat Face (FF), Small Male-Female (SMF), Lap-Joint Face (LJF), Small Tongue, Large Tongue & Groove
Specialized manufacturer of Weld Neck Ring Flanges (WNRF), Slip-On Ring Flanges (SORF), Blind Ring Flanges (BLRF), Socket Weld Ring Flanges (SWRF), Lap Joint Ring Flanges (LJRF), Ring Type Joint Flanges (RTJF), Large Diameter Flanges, Orifice Flanges
Test Certificates EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc

Stainless Steel 309H Flanges Chemical Composition

GradeCMnSiPSCrNiFe
SS 309H0.04-0.102.00.750.0450.0322.0-24.015.058.0-63.0

Stainless Steel 309H Flanges Mechanical Properties

Grade Tensile Strengtd ksi (min) Yield Strength 0.2% ksi (min) Elongation % Hardness (Brinell) max
309H 40 30 40 217

Largest Stainless Steel 309H Flanges Supplier in Midland, UK

Hudson Flanges, a leading supplier in Midland, UK, offers an extensive selection of Stainless Steel 309H flanges, including weld neck flanges, slip-on flanges, blind flanges, threaded flanges, and lap joint flanges. Designed for diverse industrial applications, our high-quality inventory and commitment to exceptional service make us a trusted choice for flange products in the region.

Contact us to get a quick quote for your requirement.

We offer These Flanges as per DIN, ISO, JIS or ANSI Standard.

Stainless Steel 309H Flanges Equivalent Grades

STANDARD WERKSTOFF NR. UNS
SS 309H 1.4833 S30909

Physical Properties of Stainless Steel 309H Flanges

Density lbm/in3 Thermal Conductivity (BTU/h ft. °F) Electrical Resistivity (in x 10-6) Modulus of Elasticity (psi x 106 Coefficient of Thermal Expansion (in/in)/ °F x 10-6 Specific Heat (BTU/lb/ °F) Melting Range (°F)
at 68°F: 0.285 9.4 at 212°F 28.3 at 68°F 28 9.4 at 32 – 212°F 0.1200 at 68°F to 212°F 2500 to 2590
12.4 at 932 °F 39.4 at 752°F 10.2 at 32 – 1000°F
49.6 at 1652 °F 10.4 at 32 – 1500°F

Stainless Steel 309H flanges are widely used in industries that require resistance to high temperatures and corrosive environments. Common applications include power generation, petrochemicals, chemical processing, and heat exchangers. These flanges are ideal for furnace components, exhaust systems, and boiler installations due to their excellent oxidation and corrosion resistance at elevated temperatures. The high carbon content in 309H provides enhanced strength and thermal stability, making these flanges suitable for high-stress environments and applications with critical durability and reliability.

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Types of Stainless Steel 309H Flanges

Stainless Steel 309H RTJ Flanges
Stainless Steel 309H Plate Flanges in UK
Stainless Steel 309H Plate Flanges
Stainless Steel 309H Orifice Flanges in UK
Stainless Steel 309H Orifice Flanges
Stainless Steel 309H Weld Neck Flanges in UK
Stainless Steel 309H Weld Neck Flanges
SS 309H Socket Weld Flanges in UK
SS 309H Socket Weld Flanges
Stainless Steel 309H Threaded Flanges in UK
Stainless Steel 309H Threaded Flanges

Stainless Steel 309H Flanges Dimensions

NPS O.D. of Flange Flanges Thickness Diameter of RF Diameter of Hub at Base Lengtd Tdru Hub Bore or Diameter Dia. of Hub at Bevel Radius of Fillet Deptd of Socket
Welding (WN) Neck Slip-On (SORF) Threaded (NPT) Socket (SWRF) Lap Joint (Loose) Slip-on (SORF) Socket (SWRF) Lap Joint (Loose)
O Q R X Y Y Y W B H r Z
1/2 3-1/2 7/16 1-3/8 1-3/16 1-7/8 5/8 5/8 .88 .90 .84 1/8 3/8
3/4 3-7/8 1/2 1-11/16 1-1/2 2-1/16 5/8 5/8 1.09 1.11 1.05 1/8 7/16
1 4-1/4 9/16 2 1-15/16 2-3/16 11/16 11/16 1.36 1.38 1.32 1/8 1/2
1-1/4 4-5/8 5/8 2-1/2 2-5/16 2-1/4 13/16 13/16 1.70 1.72 1.66 3/16 9/16
1-1/2 5 11/16 2-7/8 2-9/16 2-7/16 7/8 7/8 1.95 1.97 1.90 1/4 5/8
2 6 3/4 3-5/8 3-1/16 2-1/2 1 1 2.44 2.46 2.38 5/16 11/16
2-1/2 7 7/8 4-1/8 3-9/16 2-3/4 1-1/8 1-1/8 2.94 2.97 2.88 5/16 3/4
3 7-1/2 15/16 5 4-1/4 2-3/4 1-3/16 1-3/16 3.57 3.60 3.50 3/8 13/16
3-1/2 8-1/2 15/16 5-1/2 4-13/16 2-13/16 1-1/4 1-1/4 4.07 4.10 4.00 3/8 7/8
4 9 15/16 6-3/16 5-5/16 3 1-5/16 1-5/16 4.57 4.60 4.50 7/16 15/16
5 10 15/16 7.5/16 6-7/16 3-1/2 1-7/16 1-7/16 5.66 5.69 5.56 7/16 15/16
6 11 1 8-1/2 7-9/16 3-1/2 1-9/16 1-9/16 6.72 6.75 6.63 1/2 1-1/16
8 13-1/2 1-1/8 10-5/8 9-11/16 4 1-3/4 1-3/4 8.72 8.75 8.63 1/2 1-1/4
10 16 1-3/16 12-3/4 12 4 1-15/16 1-15/16 10.88 10.92 10.75 1/2 1-5/16
12 19 1-1/4 15 14-3/8 4-1/2 2-3/16 2-3/16 12.88 12.92 12.75 1/2 1-9/16
14 21 1-3/8 16-1/4 15-3/4 5 2-1/4 3-1/8 14.14 14.18 14.00 1/2 1-5/8
16 23-1/2 1-7/16 18-1/2 18 5 2-1/2 3-7/16 16.16 16.19 16.00 1/2 1-3/4
18 25 1-9/16 21 19-7/8 5-1/2 2-11/16 3-13/16 18.18 18.20 18.00 1/2 1-15/16
20 27-1/2 1-11/16 23 22 5-11/16 2-7/8 4-1/16 20.20 20.25 20.00 1/2 2-1/8
24 32 1-7/8 27-1/4 26-1/8 6 3-1/4 4-3/8 24.25 24.25 24.00 1/2 2-1/2

Stainless Steel 309H Flanges Weight Chart

Nominal Pipe Sizes (NPS) Slip On (SORF) Threaded (NPT) Socket Weld (SWRF) Lap Joint (Loose) Blind (BLRF) Weld Neck (WRNR)
½ 1 1 2 1 2 2
¾ 2 2 2 2 2 2
1 2 2 2 2 2 3
3 3 3 3 3 3
3 3 3 3 4 4
2 5 5 5 5 5 6
8 8 8 8 7 10
3 9 9 9 9 9 11.5
11 12 11 11 13 12
4 13 13 13 13 17 16.5
5 15 15 15 15 20 21
6 19 19 19 19 27 26
8 30 30 30 30 47 42
10 43 43 43 43 70 54
12 64 64 64 64 123 88
14 90 90 90 105 140 114
16 106 98 98 140 180 140
18 130 130 130 160 220 165
20 165 165 165 195 285 197
22 185 185 185 245 355 225
24 220 220 220 275 430 268

Are Custom Sizes Available for Stainless Steel 309H Flanges?

Yes, we offer custom sizes for Stainless Steel 309H flanges to meet specific project needs. Our team at Hudson Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@hudsonflanges.co.uk.

Material Testing

We are renowned for delivering products with precise, accurate dimensions. Each product undergoes thorough testing, both destructive and non-destructive, to ensure quality before being shipped to our customers.

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Application Industry of Stainless Steel 309H Flanges

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