321H Stainless Steel Tubes Supplier and Exporter | UNS S32109, SUS 321H & DIN 1.4878 | Leoscor Alloy Pipes
321H Stainless Steel Tubes are high-carbon, titanium-stabilized austenitic stainless steel tubes designed for high-temperature applications requiring improved strength, oxidation resistance, and long-term stability. The addition of titanium helps reduce carbide precipitation during welding and high-temperature service, while the higher carbon content provides improved creep strength and mechanical performance.
Leoscor Alloy Pipes is a trusted supplier, stockist, and exporter of SS 321H Tubes, providing seamless and welded tube solutions for industries operating under continuous heat, pressure, and thermal stress conditions. Our tubes are available in different sizes, wall thicknesses, finishes, and shapes according to industrial requirements.
321H Stainless Steel Tubes are the high-carbon version of 321 stainless steel tubes developed for applications requiring better high-temperature strength compared with standard 321 grade. These tubes contain titanium, which improves resistance against carbide precipitation and enhances stability after welding and prolonged exposure to elevated temperatures.
The combination of chromium, nickel, titanium, and higher carbon content provides excellent oxidation resistance, creep strength, and mechanical stability during continuous heat exposure. SUS 321H Tubes are widely used in heat exchangers, boilers, refinery equipment, furnace components, thermal processing units, and high-temperature piping systems.
321H Stainless Steel Tubes are available in seamless and welded forms and can be supplied in various shapes including round, square, rectangular, oval, and hollow sections. The selection of tube size, wall thickness, pressure rating, and operating temperature depends on the application requirements.
The grade is internationally identified through different material designations including UNS S32109 Tubes, SUS 321H Tubes, and DIN 1.4878 Tubes.
Equivalent Names of 321H Stainless Steel Tubes
| Equivalent Name | Standard / Country | Explanation |
|---|---|---|
| UNS S32109 Tubes | USA (Unified Numbering System) | Material designation used for 321H stainless steel tubes. |
| SUS 321H Tubes | Japan (JIS Standard) | Japanese designation used for 321H stainless steel tubes. |
Key Features of 321H Stainless Steel Tubes
- High Temperature Strength: Maintains mechanical strength during continuous elevated temperature service.
- Titanium Stabilization: Reduces carbide precipitation during welding and heat exposure.
- Improved Creep Resistance: Suitable for long-term high-temperature applications.
- Excellent Oxidation Resistance: Performs reliably in thermal environments.
- Good Weld Stability: Suitable for welded components exposed to heat.
- Strong Mechanical Performance: Provides reliable durability under pressure and thermal stress.
- Multiple Forms Available: Supplied in seamless, welded, and customized tube forms.
SS 321H Tubes Specifications
Standard specifications for SS 321H Tubes. If any specification is not mentioned here, you can contact us. We also manufacture and export custom specifications as per client’s requirements.
| Specifications | Details |
|---|---|
| Specifications | ASTM A213 / ASME SA213 / ASTM A249 / ASTM A269 |
| Dimensions | ASTM, ASME and API |
| SS 321H Tubes | 1/8″ NB to 30″ NB |
| Thickness | 0.35 mm to 6.35 mm OD, with thickness ranging from 0.1 mm to 1.2 mm. |
| Schedule | SCH 20, SCH 30, SCH 40, STD, SCH 80, XS, SCH 60, SCH 80, SCH 120, SCH 140, SCH 160, XXS |
| Type | Seamless / ERW / Welded / Fabricated / LSAW Tubes |
| Form | Round, Square, Rectangular, Hydraulic Tubes |
| Length | Single Random, Double Random & Cut Length |
| End | Plain End, Beveled End, Threaded |
321H Stainless Steel Seamless Tubes - Industries & Applications
Our pipes and tubes are used in a wide range of applications and various industries. Below are a few of them:
- Gas Processing Industries
- Petrochemical Industries
- Power Generation Industries
- Food Processing Industries
- Chemical Industries
- Oil & Gas Industries
- Fertilizers Industries
- Sugar Industries
Why Buy 321H Stainless Steel Tubes from Leoscor Alloys
Leoscor Alloys is a leading stockist, distributor, and supplier of 321H Stainless Steel Tubes from India. With more than three decades of experience, we understand the steel industry deeply. We have huge experience of supplying to all major industries across the world. Our team of dedicated experts with stringent quality policy ensures that we supply best-in-class products meeting and exceeding our client’s expectations. Below are a few quick points about why buying from Leoscor Alloys will give you an undue advantage:
321H SS Seamless Tubes Chemical Composition
| Grade | 321H | |
|---|---|---|
| min | max | |
| C | 0.04 | 0.10 |
| Mn | – | 2.0 |
| Si | – | 1.0 |
| P | – | 0.045 |
| S | – | 0.030 |
| Cr | 17.0 | 19.0 |
| Ti | 4(C+N) | 0.70 |
| Ni | 9.0 | 12.0 |
| N | – | 0.10 |
ASTM A213 SS 321H Welded Tubes Mechanical Properties
| Grade | 321H | |
|---|---|---|
| Tensile Strength (MPa) min | 515 | |
| Yield Strength 0.2% Proof (MPa) min | 205 | |
| Elongation (% in 50mm) min | 35 | |
| Hardness | Rockwell B (HR B) max | – |
| Rockwell B (HR B) max | – | |
Stainless Steel 321H Tubes Physical Properties
| Grade | 321H | |
|---|---|---|
| Density (kg/m3) | 8000 | |
| Elastic Modulus (GPa) | 193 | |
| Mean Coefficient of Thermal Expansion (m/m/0C) | 0-1000C | 16.6 |
| 0-3150C | 17.2 | |
| 0-5380C | 18.6 | |
| Thermal Conductivity (W/m.K) | at 1000C | 16.1 |
| at 5000C | 22.2 | |
| Specific Heat 0-1000C (J/kg.K) | 500 | |
| Electrical Resistivity (n.m) | 720 | |
SS 321H Tubes Equivalent Grades
| Grade | 321H | |
| UNS No | S32109 | |
| Old British | BS | – |
| En | X12CrNiTi18-9 | |
| Euronorm | No | 1.4878 |
| Name | – | |
| Swedish SS | – | |
| Japanese JIS | SUS 321H | |
| GOST | – | |
Types of Stainless Steel 321H Tubes
| Stainless Steel 321H Welded Tubes | 321H SS Welded Tubes |
| 321H Stainless Steel Seamless Tubes | SS 321H Seamless Tubes |
| SS 321H ERW Tubes | 321H Stainless Steel ERW Tubes |
| 321H SS Fabricated Tubes | Stainless Steel 321H Fabricated Tubes |
| SS 321H LSAW Tubes | 321H Stainless Steel LSAW Tubes |
| 321H Stainless Steel Polished Tubes | SS 321H Polished Tubes |
| Stainless Steel 321H Cold Drawn Tubes | 321H SS Cold Drawn Tubes |
| 321H SS Hot Rolled Tubes | Stainless Steel 321H Hot Rolled Tubes |
| SS 321H Cold Rolled Tubes | 321H Stainless Steel Cold Rolled Tubes |
| Stainless Steel 321H Square Tubes | 321H SS Round Tubes |
| 321H SS Hexagonal Tubes | Stainless Steel 321H Tubes |
Stainless Steel 321H Tubes Price List
Leoscor Alloys is one of the most competitive suppliers of pipes and tubes from India. Our prices for SS 321H Tubes are very competitive.
Please click on the request a quote button or click here to request the updated price list and ready stock information along with your requirement. Leoscor Alloys maintains a stock of all standard items and can export them at best price for 321H Stainless Steel Seamless and Welded Tubes.
ASTM A213 SS 321H Tubing Stock Availability
We maintain huge inventories of all standard sizes and grades. Please send us your complete requirement and we will send you the availability with the best quote for Stainless Steel 321H Tubes.
- Huge inventory of all standard sizes and grades.
- Distributors of all reputed origins and manufacturers.
- Strict quality control policies and highly experienced team.
- Strong logistics & delivery channels.
- Modern Infrastructure with huge storage capacity.
- An ISO 9000:2015 Certified Company.
Prominent Countries where we export 321H SS Tubes
Exporting Pipes & Tubes to Singapore, Malaysia, Hongkong, Thailand, Indonesia, Taiwan. Other countires includes Afghanistan, Albania, Andorra, Austria, Bahrain, Bangladesh, Bhutan, Brunei, Belarus, Belgium, Bulgaria, Cambodia, China, Cyprus, Croatia, Czech Republic, Denmark, Estonia, Egypt, Finland, France, Germany, Greece, Georgia, Hungary, Iceland, Ireland, Italy, Iran, Iraq, Israel, Japan, Jordan, Kazakhstan, Kuwait, Kyrgyzstan, Lebanon, Latvia, Latin America, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Maldives, Mongolia, Myanmar (Burma), Nepal, North Korea, Netherlands, Norway, Oman, Poland, Portugal, Pakistan, Palestine, Philippines, Qatar, Russia, Romania, Russia, San Marino, Serbia and Montenegro, Slovakia, Slovenia, Spain, Sweden, Switzerland, Saudi Arabia, South Korea, South Africa, Sri Lanka, Syria, Tanzania, Tajikistan, Thailand, Turkey, Turkmenistan, Ukraine, United Kingdom, United Arab Emirates (UAE), Uzbekistan, Vietnam, Yemen.
We are one of the top:
- Tubes exporters to Singapore
- Tubes exporters to Malaysia
- Tubes exporters to Hongkong
- Tubes exporters to Thailand
- Tubes exporters to Indonesia
- Tubes exporters to Taiwan
