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Neeka Tubes is one of the prominent suppliers of Stainless Steel 321 Round Bars. SS 321 is a high-strength material with good corrosion resistance features. It offers excellent oxidation resistance. This makes it suitable for high temperatures conditions. These Bars are available in lengths of 1 to 6 meters or cut to a specific length as per the client’s requirement. Also a round shape which offers equal strength and ease in the process of machining. It also has good weld ability hence suitable for most fabrication requirements.
SS 321 round bar (UNS S32100) contains 17-19% chromium and 9-12% nickel and provides good corrosion and heat resistant properties. It has tensile strength of 75 ksi and yield strength of 30 ksi. Therefore it is very strong and can withstand much pressure. It has a hardness of 217 HB and elongation of 40% therefore it is tough yet ductile. The 0.08% low carbon content 0.08% means that there is no formation of carbide. This composition making it suitable for high temperatures and welding.
ASTM A276 Stainless Steel 321H Rods Exporter, Stainless Steel 321 Forged Bar, SS 321 Square Bar, SS 321 Bright Bar, SS ASTM A276 321 Flat Bar, Stainless Steel 321H Rectangular Bar, ASTM A276 Stainless Steel 321H Hex Bar Supplier, SS 321/321H Round Bar Manufacturer in India.
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Advantages of Stainless Steel 321 Round Bar :
- Resistant to Wear and Tear – These bars resist surface damage, including scratches and dents, maintaining their appearance and durability over time.
- Low Maintenance Requirement – Stainless Steel 321 Round Bars require less maintenance due to their strong build and resistance to environmental factors.
- Non-Magnetic in Nature – The bars are non-magnetic in the annealed state, making them suitable for applications where magnetic properties cannot be tolerated.
- Eco-Friendly and Recyclable – 321 stainless steel rods are 100% recyclable, making them an environmentally friendly option for construction and manufacturing.
- Good Formability – They can be easily shaped, cut, and bent without cracking, making them useful for complex designs and custom fabrication.
- Smooth Surface Finish – Stainless Steel 321 Round Bars have a smooth and polished surface, reducing friction and making them ideal for machining and fabrication.
Most Common Types of Stainless Steel 321 Round Bar
SS 321 Square Bar
SS 321 Bright Bar
SS 321 Hollow Bar
SS 321 Rectangle Bar
SS 321 Cold Rolled Bar
SS 321 Flat Bar
SS 321 Threaded Bar
SS 321 Half-Round Bar
Stainless Steel 321 Round Bar Specifications
| Property | Details |
|---|---|
| Standard | 321 / 1.4541 321H / 1.4941 |
| Designation | ASTM, ASME, AISI A 276 , SA 276, A 479, SA 479 |
| Range | 3 MM TO 350 MM DIA |
| Finish | Bright, Polish & Black |
| Form | Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wire-mesh, Billet, Ingot, Forging Etc. |
| Application | Chemical Processing, Food Processing – equipment and storage, Petroleum Refining – fluid catalytic cracking units, polythionic acid service, Pharmaceutical Production, Waste Heat Recovery – recuperators |
We Offers Custom Sizes and fast delivery of Stainless Steel 321 Round Bar in Mumbai, Check Dimensions & Sizes of SS 321 Round Bar.
Chemical Composition Of 321 Stainless Steel Round Bar
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Ti |
| SS 321 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | – | 9.00 – 12.00 | 5(C+N) – 0.70 max |
Mechanical Properties Of Stainless Steel 321 Round Bar
| Grade | Tensile Strength ksi (min.) | Yield Strength 0.2% Offset ksi (min.) | Elongation – % in 50 mm (min.) | Hardness (Brinell) MAX |
|---|---|---|---|---|
| SS 321 | 75 | 30 | 40 | 217 |
321 Stainless Steel Round Bar Equivalent Grades
| Denstiy lbm/in3 | Coefficient of Thermal Expansion (min/in)-°F | Thermal Conductivity BTU/hr-ft-°F | Specific Heat BTU/lbm -°F | Modules of Elasticity (annealed)2-psi | |
|---|---|---|---|---|---|
| at 68 °F | at 68 – 212°F | at 68 – 1832°F | at 200°F | at 32 – 212°F | in tension (E) |
| 0.286 | 9.2 | 20.5 | 9.3 | 0.12 | 28 x 106 |
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Stainless Steel 321 Round Bar Sizes
| US Bar | Metric | Japanese | Canadian/ASTM | ||||
|---|---|---|---|---|---|---|---|
| Diameter(Inch) | Stainless Steel 321 Bar Size | Diameter (millimeter) | Stainless Steel 321 Bar Size | Diameter (millimeter) | Stainless Steel 321 Bar Size | Diameter (millimeter2) | Stainless Steel 321 Bar Size |
| 0.250 | #2 | 5 | 5 | 6 | 6 | 100 | 10M |
| 0.375 | #3 | 5.5 | 5.5 | 10 | 10 | 200 | 15M |
| 0.500 | #4 | 6 | 6 | 13 | 13 | 300 | 20M |
| 0.625 | #5 | 7 | 7 | 16 | 16 | 500 | 25M |
| 0.750 | #6 | 8 | 8 | 19 | 19 | 700 | 30M |
| 0.875 | #7 | 9 | 9 | 22 | 22 | 1000 | 35M |
| 1.000 | #8 | 10 | 10 | 25 | 25 | 1500 | 45M |
| 1.125 | #9 | 11 | 11 | 29 | 29 | 2500 | 55M |
| 1.250 | #10 | 12 | 12 | 32 | 32 | ||
| 1.375 | #11 | 14 | 14 | 35 | 35 | ||
| 1.500 | #12 | 16 | 16 | 38 | 38 | ||
| 1.625 | #13 | 18 | 18 | 41 | 41 | ||
| 1.750 | #14 | 20 | 20 | 44 | 44 | ||
| 1.875 | #15 | 22 | 22 | 48 | 48 | ||
| 2.000 | #16 | 25 | 25 | 51 | 51 | ||
| 2.250 | #18 | 28 | 28 | 57 | 57 | ||
| 32 | 32 | ||||||
| 36 | 36 | ||||||
| 40 | 40 | ||||||
| 44 | 44 | ||||||
| 50 | 50 | ||||||
SS 321 Round Bar Weight Chart
| Diameter in inch | Size in inch/MM | Weight Lbs/ft & Kg/M |
|---|---|---|
| 1/16 | 0.0625 1.5875 | 0.010 / 0.01488 |
| 1/8 | 0.125 3.175 | 0.042 / 0.062496 |
| 3/32 | 0.0938 2.38252 | 0.0240 / 0.035712 |
| 5/32 | 0.1563 3.97002 | 0.065 / 0.09672 |
| 7/32 | 0.2188 5.55752 | 0.128 / 0.190464 |
| 3/16 | 0.1875 4.7625 | 0.094 / 0.139872 |
| 1/4 | 0.25 6.35 | 0.167 / 0.248496 |
| 5/16 | 0.3125 7.9375 | 0.260 / 0.38688 |
| 9/32 | 0.2813 7.14502 | 0.211 / 0.313968 |
| 3/8 | 0.375 9.525 | 0.376 / 0.559488 |
| 1/2 | 0.5 12.7 | 0.668 / 0.993984 |
| 7/16 | 0.4375 11.1125 | 0.512 / 0.761856 |
| 9/16 | 0.5625 14.2875 | 0.844 / 1.255872 |
| 11/16 | 0.6875 17.4625 | 1.264 / 1.880832 |
| 5/8 | 0.625 15.875 | 1.043 / 1.551984 |
| 3/4 | 0.75 19.05 | 1.502 / 2.234976 |
| 7/8 | 0.875 22.225 | 2.045 / 3.04296 |
| 13/16 | 0.8125 20.6375 | 1.761 / 2.620368 |
| 15/16 | 0.9375 23.8125 | 2.35 / 3.4968 |
| 1 1/16 | 1.0625 26.9875 | 3.012 / 4.481856 |
| 1 | 1 25.4 | 2.671 / 3.974448 |
| 1 1/8 | 1.125 28.575 | 3.38 / 5.02944 |
| 1 1/4 | 1.25 31.75 | 4.173 / 6.209424 |
| 1 3/16 | 1.1875 30.1625 | 3.77 / 5.60976 |
| 1 5/16 | 1.3125 33.3375 | 4.598 / 6.841824 |
SS 321 Round Bars Packing & Marking
Delivery and Packing
Stainless steel 321 round bars are usually packed in wooden boxes, pallets or bundled in order to avoid any possible harm during the transportation. Proper labeling assures easy identification.
We are able to deliver our products on time. This ensures that client expectations are met with timely and reliable delivery. Each package includes necessary documents. For instance test reports and certifications which ensure the quality of the product as well as compliance to the standard requirements.
Testing and Marking
Our management pays close attention to the manufacturing process of 321 stainless steel round bar. To ensure best production. Our specialists check physical and mechanical properties as well as chemical. Some of the tests include hardness, corrosion and material test. Each product comes along with test certificates and detailed reports. This guaranteeing reliability and high industry standards. Proper marking includes grade, size and heat number for easy identification and traceability ensuring quality assurance at every step.
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Industrial Application of SS 321 Round Bar
