Manufacturer of Stainless Steel 309H Flanges

BAHUBALI Alloyshave immovably situated ourselves as a central producer and supplier of a complete accumulation of Stainless Steel Flanges. Our fashioned flangess are thoroughly tried by quality investigators to guarantee that these are as per set industry benchmarks. The reach is made available in different measurements and particulars keeping in mind the end goal to serve the variegated requests of the customers. Comprised of chromium-nickel, composite 309H are sort of stainless steel that is most generally utilized under high temperature forms.

The vicinity of chromium and nickel in higher focuses makes them superb consumption safe compounds, additionally great warmth safe. These amalgams hold their qualities in both ordinary and expanded temperatures. The main angle that separates them is the vicinity of carbon in various proportions. Combination 309S contains moderately less rate of carbon and this permits it to control carbide precipitation and gives it stunning welding properties.


Table 1. Composition ranges for Stainless Steel 309H Flanges

Grade 309H C Mn Si P S Cr Mo Ni Fe
min. 0.04 - - - - 22.0 - 12.0 58.1
max. 0.10 2.0 0.75 0.045 0.030 24.0 - 15.0 66.0

Table 2. Mechanical properties of Stainless Steel 309H Flanges

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness
Rockwell B (HR B) max Brinell (HB) max
309H 580 230 35 90 198
309HH also has a requirement for a grain size of ASTM No 7 or coarser.

Table 3. Physical properties of Stainless Steel 309H Flanges

Density (kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion (m/m/0C) Thermal Conductivity (W/m.K) Specific Heat 0-1000C (J/kg.K) Electrical Resistivity (n.m)
0-1000C 0-3150C 0-5380C at 1000C at 5000C
7.73 220 11.5 17.8 18.4 16.2 21.5 450 570

Table 4. Grade specifications for Stainless Steel 309H Flanges

Grade UNS No Old British Euronorm Swedish SS Japanese JIS
BS En No Name
309H S30900/S30908 SA240 - 1.4343A - - -
These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.

Table 5. Standard specifications for Stainless Steel 309H Flanges

Designation A 182 / A 240, SA 182 / SA 240
Class 150#, 300#, 400#, 625#, 900#, 1500# & 2500#
Size 1/2" NB TO 48" NB
Standards ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings, ASTM, ASME Flanges, ANSI Flanges, DIN Flanges, EN Flanges, BS Flanges etc.
Grade A 182 309H

Types of Stainless Steel 309H Flanges

   SS 309H Expander Flanges
   Stainless Steel 309H Weldo / Nipo Flanges
   SS 309H WNRF Flanges
   Stainless Steel 309H Ring Type Joint Flanges
   SS 309H Weld Neck Flanges Series A or B
   Stainless Steel 309H Spades Ring Spacers Flanges
   SS 309H Threaded Flanges
   Stainless Steel 309H Long Neck Weld Flanges
   Stainless Steel 309H Groove & Tongue Flanges
   SS 309H SWRF Flanges
   Stainless Steel 309H SORF Flanges
   SS 309H Flat Flanges

   Stainless Steel 309H Forged Flanges
   SS 309H High Hub Blinds Flanges
   Stainless Steel 309H Blind Flanges
   SS 309H Spectacle Blinds Flanges
   Stainless Steel 309H Reducing Flanges
   SS 309H Loose Flanges
   SS 309H Orifice Flanges
   Stainless Steel 309H RTJ Flanges
   SS 309H Socket Weld Flanges
   Stainless Steel 309H Screwed Flanges
   SS 309H Slip On Flanges
   Stainless Steel 309H Weld Neck Flanges
   Stainless Steel 309H Flange Facing Type & Finish
   SS 309H Lapped Joint Flanges
   SS 309H Square Flanges

Review Date
Reviewed Product
Stainless Steel 309H Flanges
Author Rating

Our Products

Enquiry Form

Contact form submitted
Featured Products
Contact Us

  Registered Office

  •         47, 2st Carpenter Street
  •         Near C.P. Tank Road,
  •         Mumbai – 400 004,
  •         INDIA
Export Destination

UAE, Bahrain, Italy, Indonesia, Malaysia, United States, Mexico, Chine, Brazil, Peru, Nigeria, Switzerland, Poland, Kuwait, Jordan, Dubai, Thailand (Bangkok), Venezuela, Iran, Germany, UK, Canada, Russia, Turkey, Australia, New Zealand, Sri Lanka, Vietnam, South Africa, Kazakhstan, Saudi Arabia.

  • Phone:- +91-22-6743 7444
  •         Phone:- 6743 8222
  •         Mobile:– +91-99691 20488
  •         Mobile:- +91-098670 71980
  •   Fax No.:- +91-22- 2382 9647
Domestic Supply

Mumbai, Delhi, Bangalore, Hyderabad, Ahmedabad, Chennai, Kolkata, Surat, Pune, Nagpur, Indore, Thane, Bhopal, Visakhapatnam, Vadodra, Nashik, Faridabad, Rajkot, Aurangabad, Ranchi, Coimbatore, Raipur, Mysore, Bhubaneswar, Salem, Bhilai, Bhiwandi, Bikaner, Mangalore, Kochi (Cochin), Bhavnagar, Tirupur, Ankleshwar, Assam, Siliguri

  •   Id:-