Stainless Steel (SS) 309, 310, and 310S pipes and tubes are well known for their resistance to high temperatures, corrosion, and mechanical strength. These grades of stainless steel are best suited for different industrial uses, particularly in high-temperature exposed environments and aggressive corrosive media. This article gives a comprehensive overview of the characteristics, specifications, applications, and worldwide demand for these multi-purpose steel products.
1. Overview and Standards
Stainless Steel 309, 310, and 310S pipes and tubes meet the below-given international standards:
309: ASTM / ASME A/SA 213 / 249 / 269 / 312 / 358 CL. I to V
310: ASTM / ASME A/SA 213 / 249 / 269 / 312 / 358 CL. I to V
310S: ASTM / ASME A/SA 213 / 249 / 269 / 312 / 358 CL. I to V
2. Types, Sizes, and Forms
These tubes and pipes come in various sizes and shapes to satisfy various application requirements:
Seamless Pipes & Tubes: 1/2" NB - 16" NB
ERW (Electric Resistance Welded): 1/2" NB - 24" NB
EFW (Electric Fusion Welded): 6" NB - 100" NB
Schedule: SCH 10 to SCH XXSCertifications: IBR and Non-IBRTypes: Seamless, ERW, EFW, Fabricated, LSAWForms: Round, Square, Rectangular, HydraulicLength Options: Single Random, Double Random, Cut LengthEnd Types: Plain End, Beveled End, Threaded
3. Chemical Composition
Grade
Ni (%)
Cr (%)
C (%)
Fe (%)
Mn (%)
Si (%)
S (%)
P (%)
309
14 max
23 max
0.20 max
60 max
2 max
1 max
0.030 max
0.045 max
310
19-22
24-26
0.25 max
Balance
2 max
1.50 max
0.03 max
0.045 max
310S
19-22
24-26
0.08 max
Balance
2 max
1.50 max
0.03 max
0.045 max
4. Mechanical Properties
Grade
Tensile Strength (Psi/MPa)
Yield Strength (Psi/MPa)
Elongation (%)
309
89900 / 620 MPa
45000 / 310 MPa
45%
310
75000 / 515 MPa
30000 / 205 MPa
35%
310S
75000 / 515 MPa
30000 / 205 MPa
35%
5. Physical Properties
Grade
Density (g/cm3)
Melting Point ( °C/°F)
309
8.0
1455 °C (2650 °F)
310
8.0
1454 °C (2650 °F)
310S
8.0
1454 °C (2650 °F)
6. Applications
Due to their superior resistance to scaling and oxidation at high temperatures, SS 309, 310, and 310S pipes and tubes find extensive application in:
Furnace components
Oil burner components
Carburising boxes
Heat treatment baskets and jigs
Heat exchangers
Welding filler wire and electrodes
7. Domestic Reach in India
These stainless steel items are distributed to all major Indian cities, including:
Mumbai, Ahmedabad, Bhopal, Bikaner, Pune, Delhi, Chennai, Visakhapatnam, Mangalore, Nagpur, Bangalore, Kolkata, Siliguri, Assam, Indore, Hyderabad, Surat, Nashik, Cochin, Thane, Faridabad, Rajkot, Aurangabad, Bhavnagar, Ranchi, Coimbatore, Mysore, Salem, Tirupur, Raipur, Bhubaneswar, Bhilai, Ankleshwar, Bhiwandi, Vadodara, Kochi
8. Global Export Network
SS 309/310/310S pipes and tubes have great global demand and are exported to countries including:
Continents: Mid East/Africa, Asia, North America, Western Europe, Eastern Europe, AustraliaCountries: Oman, Venezuela, Sri Lanka, USA, Angola, Portugal, Poland, Brazil, Russia, Chile, Singapore, UAE, Costa Rica, Qatar, Thailand, Canada, Saudi Arabia, Bahrain, Egypt, Indonesia, Malaysia, Turkey, Mexico, China, Peru, United States, Nigeria, Jordan, Kuwait, Dubai, Bangkok, Iran, Germany, UK, New Zealand, Vietnam, South Africa, Kazakhstan
Conclusion
Stainless Steel 309, 310, and 310S pipes and tubes are a heavy-duty option for corrosion-resistant and high-temperature applications. Their versatility, mechanical properties, and worldwide demand render them a workhorse in industries from petrochemicals to heat treatment. For domestic supply or overseas projects, these SS grades continue to demonstrate their worth in challenging environments.
