ASTM A269 / ASME SA269 TP316L Bright Annealed Stainless Steel Tube Polish Finishing
The tubing specified in ASTM A269 can be produced through either the seamless or welded process. The common surface finishes include annealed, pickled, or bright annealed. SS304 and SS316 are the two most common stainless steel grades used for stainless steel tubing system. Stainless steel offers several benefits, including excellent resistance to corrosion, easy cleaning, minimal maintenance needs, and affordability. While the initial cost of stainless steel might be higher compared to other metals, stainless steel tubing provides cost advantages in terms of lower maintenance and replacement expenses.
Polished stainless steel tubes offer several advantages:
1. Aesthetic appeal: Polishing gives stainless steel tubes a shiny and elegant appearance, making them visually appealing and suitable for various applications.
2. Corrosion resistance: Stainless steel itself is known for its excellent corrosion resistance, and polishing further enhances its ability to withstand corrosion, rust, and stains, making it suitable for use in harsh environments.
3. Easy to clean: The smooth surface of polished stainless steel tubes is easy to clean, making them low maintenance and ideal for applications that require sterile conditions, such as in the medical or food industries.
4. Durability: Stainless steel, in general, is a durable material, and polishing adds an extra layer of protection against scratches and wear, extending the lifespan of the tubes.
5. Versatility: Polished stainless steel tubes are versatile and can be used in various industries, including architecture, automotive, manufacturing, and more.
Stainless Steel Polished Grits
- 120 grit
- 180 grit
- 320 grit
- 400 grit
- 600 grit
- 800 grit
Other Finishing processes:
BA: Bright Annealing
MP: Mechanical polishing
BA: Bright Annealing
EP: Electro Polishing
Equivalent Grades of Stainless Steel 316L Tubes
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| SS 316L | 1.4404 / 1.4435 | S31603 | SUS 316L | 316S11 / 316S13 | 03Ch17N14M3 / 03Ch17N14M2 | Z3CND17‐11‐02 / Z3CND18‐14‐03 | X2CrNiMo17-12-2 / X2CrNiMo18-14-3 |
Chemical Composition of Stainless Steel 316L Tubes
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Fe |
| SS 316L | 0.035 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 16.00 - 18.00 | 2.00 - 3.00 | 10.00 - 14.00 | 68.89 min |
Mechanical Properties of Stainless Steel 316L Tubes
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1399 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
Physical Properties of Stainless Steel 316L Tubes
Grade |
Density
(kg/m3) |
Elastic Modulus
(GPa) | Mean Co-eff of Thermal Expansion (µm/m/°C) | Thermal Conductivity
(W/m.K) |
Specific Heat 0-100°C
(J/kg.K) |
Elec Resistivity
(nΩ.m) |
| 0-100°C | 0-315°C | 0-538°C | At 100°C | At 500°C |
| 316/L/H | 8000 | 193 | 15.9 | 16.2 | 17.5 | 16.3 | 21.5 | 500 | 740 |
Applications
Food preparation equipment particularly in:
1. chloride environments
2. Fasteners
3. Pharmaceuticals
4. Marine applications
5. Architectural applications
6. Medical implants which comprise pins, screws and orthopedic implants like total hip and knee replacements.
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ASTM A269 TP316L Stainless Steel Bright Annealed Tube Polish Finishing 320 Grit Images
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