ASTM A269 TP316L Stainless Steel Seamless Tubes Bright Annealed, Boiler, Heat Exchanger Application
ASTM A269 standard was developed by the American Society for Testing and Materials (ASTM International) and is specifically designed for the specific specifications of stainless steel tubes. This standard is mainly used in piping systems that operate under extreme conditions such as high temperature, high pressure or specific environments, covering multiple industries such as the chemical industry, food processing and pharmaceutical industry. According to the ASTM A269 standard, detailed regulations are made for the size specifications, chemical composition and mechanical properties of stainless steel seamless and welded tubes.
ASTM A269 TP316L is a stainless steel tube grade in the ASTM A269 standard, which specifies its chemical composition, mechanical properties and other related requirements. The following is some basic introduction about ASTM A269 TP316L:
- Chemical composition: The chemical composition of ASTM A269 TP316L stainless steel usually includes about 16-18% chromium, 10-14% nickel and 2-3% molybdenum, and contains a maximum of 0.03% carbon. The low carbon content of 316L stainless steel makes it have better corrosion resistance when welding.
- Mechanical properties: The mechanical properties of ASTM A269 TP316L include indicators such as tensile strength, yield strength and elongation. According to the requirements of ASTM A269 standard, TP316L stainless steel tubes should have certain mechanical properties to meet engineering needs.
- Weldability: The low carbon content of TP316L stainless steel helps improve its weldability and reduces carbide deposition during welding, thereby reducing the requirement for reheat treatment and improving its resistance to corrosive environments.
ASTM A269 Tubes Mechanical Properties
| SS GRADE | HEAT TREATMENT | TEMPERURE F (C) MINIMUM | HARDNESS |
| BRINELL | ROCKWELL |
| TP316 | Solution | 1900(1040) | 192HBW/ 200HV | 90HRB |
| TP316L | Solution | 1900(1040) | 192HBW/ 200HV | 90HRB |
ASTM A269 Standard Tubing Chemical Composition
| SS GRADE | ASTM A269/SA 269 CHEMICAL COMPOSITION % MAXIMUM |
| C | MN | P | S | SI | CR | NI | MO | N B | NB | TI |
| TP316 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 | --- | --- | --- |
| TP316L | 0.035 D | 2.00 | 0.045 | 0.030 | 1.00 | 16.0-18.0 | 10.0-15.0 | 2.00-3.00 | --- | --- | --- |
SA269 tubing Tolerance
| OD, INCH | OD TOLERANCE INCH(MM) | WT TOLERANCE % | LENGTH TOLERNACE INCH(MM) |
| + | - |
| ≤1 /2 | ± 0.005 ( 0.13 ) | ±15 | 1 /8 ( 3.2 ) | 0 |
| > 1 /2~1 1 /2 | ±0.005(0.13) | ±10 | 1 /8(3.2) | 0 |
| > 1 1 /2~< 3 1 /2 | ± 0.010(0.25) | ±10 | 3 /16(4.8) | 0 |
| > 3 1 /2~< 5 1 /2 | ± 0.015(0.38) | ±10 | 3 /16(4.8) | 0 |
| > 5 1 /2~< 8 | ± 0.030(0.76) | ±10 | 3 /16(4.8) | 0 |
| 8~< 12 | ± 0.040(1.01) | ±10 | 3 /16(4.8) | 0 |
| 12~< 14 | ± 0.050(1.26) | ±10 | 3 /16(4.8) | 0
|
Application:
- Chemical industry: In the chemical industry, A269 TP316L stainless steel tube is mainly used to manufacture various types of corrosion-resistant equipment. Due to its excellent acid and alkali resistance, it is widely used in the production process of fertilizers, petrochemicals, synthetic fibers, etc. In addition, it can also be used in the manufacture of high-pressure steam equipment, high-temperature reactors, heat exchangers and other equipment.
- Petroleum industry: In the petroleum industry, A269 TP316L stainless steel tube is widely used in the manufacture of equipment such as oil pipelines, oil storage tanks, and oil well pipes. Due to its good corrosion resistance, it can effectively prevent the corrosion of equipment by corrosive substances such as hydrogen sulfide and chloride in media such as crude oil and natural gas.
- Medical equipment: In the field of medical equipment, A269 TP316L stainless steel tube is widely used to manufacture various types of medical equipment, such as scalpels, pliers, syringes, catheters, etc. Due to its good biocompatibility and antibacterial properties, it can effectively reduce the risk of infection during the use of medical equipment. In addition, it can also be used to manufacture advanced medical products such as dental instruments and orthopedic implants.
- Food processing field: A269 TP316L stainless steel tube is also widely used in the manufacture of food processing equipment, packaging equipment and food storage equipment, etc. Due to its excellent corrosion resistance and antibacterial properties, it can effectively protect food safety.
- Environmental protection field: In the field of environmental protection, A269 TP316L stainless steel tube is widely used in the manufacture of various environmental protection equipment, such as sewage treatment equipment, waste gas treatment equipment, etc. Due to its good corrosion resistance and high strength, it can effectively withstand the erosion of corrosive environments such as sewage and waste gas.
- Other fields: In addition to the above fields, A269 TP316L stainless steel tubes can also be used to manufacture textile machinery, dyes, printing and dyeing equipment, etc., as well as for the manufacture of key components of important buildings such as bridges, high-rise buildings, subway stations, etc. In addition, in the field of ships, it is also widely used to manufacture key components of ships, such as hulls, bridges, anchor chains, propellers, etc.
