Stainless Steel 309/309S Suppliers, Manufacturers, Stockist – AISI 309 (UNS S30900, 1.4828), AISI 309S (UNS S30908, 1.4833), AISI 309H (UNS S30909)

  • Metallica is one of the biggest stainless steel 309/309S product supplier and manufacturer in India, with over 250 customers in India and overseas. We are bulk buyers and exporters of stainless steel 309/309S pipes, plates, fittings and flanges from our factory in India, and are able to give you the best price and quality just in time.
  • We stock all major forms of stainless steel 309/309S grade such as stainless steel 309S pipe and tube, SS 309S flange and fittings, SS 309S butt-welding pipe fittings, SS 309S elbow, SS 309S tee, SS 309S reducer, SS 309S stub end, gaskets, fasteners, valves, sanitary fittings etc. Being one of the largest volume stainless steel 309S supplier in Mumbai, we can guarantee you the lowest prices.
  • At Metallica Metals, we believe in selling in volume and increasing our customer base across the globe, enabling us to work on low margins. We have an extensive trader network across India and the Middle East, who buy from us on a regular basis.
  • In addition to traders, we have many EPC contractors, companies and end users in various industries as our customers for stainless steel. We are leading stainless steel 309S suppliers for various applications ranging from low/medium/high pressure or temperatures.
  • Stainless Steel Grade 309 and 309S are austenitic chromium-nickel stainless steels that are frequently utilized for higher temperature applications. Because of their high chromium and nickel content, Alloys 309 and 309S are highly corrosion resistant, have greater resistance to oxidation, and magnificent heat resistance while giving good qualities at room and high temperatures. The difference between Stainless Steel 309 and 309S is the carbon content. Alloy 309S has a substantially less carbon composition which reduces carbide precipitation and improves weldability.

Stock & Production Range of Stainless Steel 309/309S Materials

Product Stainless Steel 309/309S/309H
Equivalents AISI 309 (UNS S30900, 1.4828), AISI 309S (UNS S30908, 1.4833), AISI 309H (UNS S30909)
Items Pipe, Tubes, Tubing, Fittings, Flanges, Valves, Fasteners
Size 6mm to 610mm, 1/2″ NB to 48″ NB
Pipe Type Seamless, Welded, ERW, Fabricated, Custom Size Pipes
Specifications ASTM, ASME, DIN, GOST, JIS
Certification EN 10204 3.1
Fittings Type Butt Weld, Screwed & Socket Weld, Flanges, Instrumentation
Other Fittings Elbows, Tees, Reducers, Caps, Stub Ends, Flanges (ANSI, Table E, D and H), Nuts, Bolts, Screws, Threaded Bars

Testing & Inspection of Stainless Steel 309/309S Materials

Testing (Destructive, Non Destructive)

Positive Material Identification – PMI Testing Hydrostatic Test
Chemical Analysis – Spectro Analysis Hydrogen-Induced Cracking (HIC) Test
Mechanical Testing Such as Tensile, Elongation, Reduction of Area Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177
Micro Test Radiography Test
Macro Test Dye Penetrant Test (DP Test)
Hardness Test Ultra Sonic Test (UT)
Pitting Resistance Test Eddy Current Testing
Intergranular Corrosion (IGC) Test Impact Test
Flaring Test Bend Test
Flattening Test

Inspection

  • Our internal inspection reports would be provided for all the goods before shipment.
  • Buyers or their associates are most welcome to visit us for personal inspect
  • We regularly have inspections ongoing at our premises from internationally acclaimed Inspection Agencies such as TUV, BVIS, SGS, Llyods, DNV etc.

Prices for Stainless Steel 309/309S Materials

Prices for stainless steel 309/309S materials are directly co related to prices of the raw materials such as iron ore, metal scrap, chromium, nickel and various other alloying elements. The production cost of heat resistant stainless steel and nickel alloy plates is high as they contain high amount of nickel and chromium. Meanwhile, mild steel material is among the lowest cost steel available, followed by carbon steel, 400 series stainless steels, aluminium, alloy steel, and 300 series stainless steel. Special alloys such as titanium, Inconel, Monel and Hastelloy cost very high as the nickel, chromium and moly content is very high.

For special and discounted prices for various types of stainless steel 309/309S products, please feel free to contact us through email, phone or whatsapp.

We are also regularly publishing our price list for various steel products on our blog.

Documents Provided at the time of Domestic Sales or Export of Stainless Steel 309/309S Products

Certificate of Origin Raw Material Test Reports
Commercial Invoice Heat Treatment Charts
Packing List Quality Assurance Plan (QAP)
Fumigation Certificates NABL approved Laboratory Test Reports
Letter of Guarantee Material Test Certificates
ROHS Certificate Certificate of Compliance/Conformity

Price Basis for Stainless Steel 309/309S Materials

We can offer any of the following price basis depending on your requirement:

  • Ex-works
  • FOR Site in India
  • FOB Nhava Sheva
  • CFR, CIF, CPT your destination port
  • Door to Door Delivery Duty Paid as well as Duty Unpaid

Delivery Time of Stainless Steel 309/309S Materials

  • If the items are available in stock, we take 2 days from the date of receipt of advance payment to clear the shipment and send it to port.
  • And in-case the items are not availabe in stock, the time taken for manufacturing depends on the size, quantity and grade.
  • However we can claim the fact that we can compete with anyone in India on Delivery time and most of the time our production time is the least.
  • We have tied up with strong logistic partners in India which can undertake any type of shipping activities and make sure that there is no delay in shipment.

Marking & Packing of Stainless Steel 309/309S Materials

  • All our products will have complete marking details which are co-related to the test certificates we supply.
  • In case of orders for cut piece of Pipes, Sheets or Round Bars, the marking is transferred from the product from which it is cut. In such cases we provide Letter confirming the marking transfer and picture of the product from which it is cut.
  • All goods are packed in wooden cases or pallets.

About 309/309S/309H Stainless Steel

What is 309/309S Stainless Steel?

  • Alloy 309 (UNS S30900) is an austenitic stainless steel developed for use in high temperature corrosion resistance applications. The alloy resists oxidation up to 1900°F (1038°C) under non-cyclic conditions. Frequent thermal cycling reduces oxidation resistance to approximately 1850°F (1010°C). A chromium-nickel stainless grade, Alloy 309/309S is suitable for a number of high temperature applications. 23% chromium, approx. 5% more than 304 stainless steel gives Alloy 309/309S an edge over 304 stainless steel when it comes to general corrosion resistance at elevated temperatures.
  • AISI 309S stainless steel is an austenitic stainless steel formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition. 309S is the AISI designation for this material. S30908 is the UNS number. It contains less nickel in its composition than Type 310, moderately low tensile strength and  lower amount of carbon in its composition among the wrought austenitic stainless steels thus utilization in areas where high temperature gases may pose a problem. Type 309S is additionally characterized by its resistance to oxidation and creep, along with its ability to withstand high temperatures. Moist environments have no effect on it, due to the higher levels of nickel and chromium in its makeup. Because of this, it is often utilized in marine environments in place of Stainless Steel 304, as it displays a higher resistance.
    Despite its excellent weldability, Type 309S does have a tendency to work harden.
  • AISI 309H (S30909) Stainless Steel. AISI 309H stainless steel is an austenitic stainless steel formulated for primary forming into wrought products. Cited properties are appropriate for the annealed condition. 309H is the AISI designation for this material. S30909 is the UNS number. It has a moderately low tensile strength.

Applications of Stainless Steel 309/309S/309H

  • Aircraft and jet engine parts
  • Auto exhaust parts
  • Heat exchangers
  • Waste incinerators
  • Glass blowing components
  • Rotary kilns
  • Furnace anchor bolts
  • Hotel
  • Artware
  • Household Products
  • Door
  • Cabinet
  • Kitchen Appliance
  • Industrial
  • Related Products
  • Thermal Processing
  • Paper Mill Equipment
  • Petroleum Refinery
  • Fluidized Bed Furnaces

Stainless Steel 309/309S Products & Manufacturing Standards

Type Sizes Schedules ASTM Standards
Bar 1/2″ thru 6″ A276, A479
Butt Weld Fittings 1/2″ thru 12″ Sch 10, 40, 80, 160 & XXH A403
Forgings A182
Pipe Welded & Seamless 1/4″ thru 16″ Sch 10, 40, 80, 160 & XXH A312
Tube, Welded A249
Tube, Seamless A213
Plate A240
Flange & Pressure Fittings 1/2″ to 60″ Sch 10, 40, 80, 160 & XXH A182

Equivalents of 309/309S/309H Stainless Steel

STANDARD SS 309S SS 309H
UNS S30908 S30909
WERKSTOFF NR. 1.4828 1.4833

Chemical Composition & Mechanical Properties of SS 309/309S

Chemical Composition

ELEMENT SS 309S SS 309H
NI 12.0 – 15.0 12.0 – 15.0
C 0.08 max 0.04 – 0.10
MN 2.0 max 2.0 max
P 0.045 max 0.045 max
S 0.030 max 0.030 max
SI 1.0 max 1.0 max
CR 22.0 – 24.0 22.0 – 24.0
MO 0.75 max

Physical Properties

DENSITY 7.89 g/cm 3 / 0.285 lb/in 3
MELTING POINT 1480 – 1530(°C) / 2500 – 2590 (°F)
ANNEALED 1000 – 1150 (°C) / 1832 – 2101 (°F)
QUENCH Rapid Air/Water

Mechanical Properties

309 309S
Typical Minimum Typical Minimum
Tensile Strength MPa 560 515 540 515
Proof Stress(0.2% Offset) MPa 285 205 280 205
Elongation (Percent in 50mm) 54 40 54 40
Hardness (Brinell) 164 159
Endurance (fatigue) limit, MPa 260 260

Fabrication Data & Other Properties of Stainless Steel 309/309S/309H

Alloy 309 can be easily welded and processed by standard shop fabrication practices.

Hot Forming

  • Heat uniformly at 1742 – 2192°F (950 – 1200°C). After hot forming a final anneal at 1832 – 2101°F (1000 – 1150°C) followed by rapid quenching is recommended.

Cold Forming

  • The alloy is quite ductile and forms in a manner very similar to 316. Cold forming of pieces with long-term exposure to high temperatures is not recommended since the alloy is subject to carbide precipitation and sigma phase precipitants.

Welding

  • Alloy 309 can be readily welded by most standard processes including TIG, PLASMA, MIG, SMAW, SAW and FCAW.

Corrosion Resistance of 309/309S/309H Stainless Steel

Wet Corrosion

  • Alloy 309 is not designed for service in wet corrosive environments. The high carbon content, which is present to enhance creep properties, has a detrimental effect on aqueous corrosion resistance. The alloy is prone to intergranular corrosion after long term exposure at high temperatures. However, due to its high chromium content (23%), Alloy 309 is more corrosion resistant than most heat resistant alloys.

High Temperature Corrosion

Alloy 309 resists high temperature corrosion in most in-service conditions. Operating temperatures are as follows:

  • Oxidizing conditions (max. sulfur content – 2g/m3)
    • 1922°F (1050°C) continuous service
    • 2012°F (1100°C) peak temperature
  • Oxidizing conditions (max. sulfur greater than 2 g/m3)
    • 1742°F (950°C) maximum temperature
  • Low oxygen atmosphere (max. sulfur content – 2 g/m3)
    • 1832°F (1000°C) maximum temperature
  • Nitriding or carburizing atmospheres
    • 1562 –1742°F (850 – 950°C) maximum

The alloy does not perform as well as Alloy 600 (UNS N06600) or Alloy 800 (UNS N08800) in reducing, nitriding or carburizing atmospheres, but it does outperform most heat resistant stainless steels in these conditions.

What is the Difference Between 309 and 309S Stainless Steel?

  • Alloy 309 (UNS S30900) is an austenitic stainless steel developed for use in high temperature corrosion resistance applications. The alloy resists oxidation up to 1900°F (1038°C) under non-cyclic conditions. Frequent thermal cycling reduces oxidation resistance to approximately 1850°F (1010°C). Because of its high chromium and low nickel content, Alloy 309 can be utilized in sulfur containing atmospheres up to 1832°F (1000°C). The alloy is not recommended for use in highly carburizing atmospheres since it exhibits only moderate resistance to carbon absorption. Alloy 309 can be utilized in slightly oxidizing, nitriding, cementing and thermal cycling applications, albeit, the maximum service temperature must be reduced.
  • When heated between 1202 – 1742°F (650 – 950°C) the alloy is subject to sigma phase precipitation. A solution annealing treatment at 2012 – 2102°F (1100 – 1150°C) will restore a degree of toughness.
  • 309S (UNS S30908) is the low carbon version of the alloy. It is utilized for ease of fabrication. 309H (UNS S30909) is a high carbon modification developed for enhanced creep resistance. It most instances the grain size and carbon content of the plate can meet both the 309S and 309H requirements. Alloy 309 can be easily welded and processed by standard shop fabrication practices.

Properties and Processing Characteristics of Stainless Steel 309S/309H

  • SS 309 is a highly alloyed austenitic stainless steel used for its excellent oxidation resistance, high temperature strength and creep resistance. The lower nickel content of CS309 improves resistance to sulphur attack at high temperatures.
  • SS 309 provides excellent corrosion resistance and heat resistance plus good strength at room and elevated temperatures. The alloy is non-magnetic as annealed and becomes slightly magnetic when cold worked.

Processing

Standard welding processes for this steel grade are:

  •  TIG-Welding
  •  MAG-Welding Solid Wire
  •  Arc Welding (E)
  •  Laser Beam Welding

In quenched condition the material can be slightly magnetizable. With increasing cold forming the magnetizability increases.