SS 309 / 309S Supplier in India
Rubinox Metal and Alloys supplies SS 309 and SS 309S in pipes, tubes, sheets, plates, coils, bars, rods, flanges, fittings and fasteners for heat-resistant, furnace, boiler, kiln and high-temperature fabrication requirements across India.

Why SS 309 / 309S?
- Heat-resistant austenitic stainless steel used for high-temperature service.
- Often selected for furnace parts, heat treatment equipment and thermal processing.
- SS 309S is the low-carbon version, useful where welding and carbide precipitation control matter.
- Works as a practical bridge between common 304 grades and higher heat-resistant 310.
Common Applications
- Furnace parts and heat treatment fixtures
- Boiler, kiln and oven components
- High-temperature fabrication
- Burner parts and thermal process equipment
- Industrial ducting, liners and supports
SS 309 Products Available
Pipes & Tubes
Seamless and welded supply as per OD, NB, schedule and project specification.
Sheets, Plates & Coils
Sheet, plate and coil supply for furnace, fabrication and thermal applications.
Bars, Rods & Flats
Round bars, rods, flats and cut lengths for machining and structural use.
Flanges
Weld neck, slip on, blind, socket weld, threaded and custom flanges.
Fittings
Elbows, tees, reducers, caps and other piping fittings.
Fasteners
Bolts, nuts, washers, studs and project fastener requirements.
What to Send for Fast Quotation
| Item | Details to Share |
|---|---|
| Grade / Spec | SS 309, SS 309S, ASTM / ASME / EN or project specification. |
| Size | OD, NB, schedule, thickness, width, length, pressure class, flange standard or drawing. |
| Quantity | Number of pieces, total weight, meter length or project quantity. |
| Application | Working temperature, furnace/boiler/kiln service, welding or fabrication requirement. |
SS 309 vs SS 310
SS 309 is commonly used for heat-resistant work where service conditions are above regular 304 usage but may not require SS 310. SS 310 is selected for more demanding high-temperature oxidation resistance.
Industries Served
- Heat treatment and furnace manufacturing
- Boiler and thermal equipment
- Cement, kiln and industrial oven work
- Engineering and fabrication
- Process plants and maintenance
Related Pages
FAQ
What is SS 309 used for?
SS 309 is used for heat-resistant applications such as furnace parts, heat treatment fixtures, boiler parts, kiln components and high-temperature fabrication.
What is the difference between SS 309 and SS 309S?
SS 309S is the lower carbon version of SS 309 and is often preferred when welding or carbide precipitation control is important.
Do you supply SS 309 across India?
Yes. Rubinox supplies SS 309 and SS 309S products across India, with export support also available.
Request an SS 309 Quotation
Share item, grade/specification, size, quantity and delivery location for faster pricing.
Contact
Phone: +91 9363193755 • Email: tarun@rubinoxmetal.com
A-206, 2nd floor, Krishvi Escape, Kalbadevi, Mumbai - 400002
