what is SA 213 TP 316L Chemical Composition？
Leave a message
What is SA 213 TP 316L material?
SA 213 TP 316L is an ASME/ASTM specification for seamless, low-carbon, 16Cr-12Ni-2Mo austenitic stainless steel tubing used in high-temperature service, particularly in boilers, superheaters, and heat exchangers. It provides superior corrosion resistance, high-temperature stability up to 800-870°C, and improved immunity to sensitization during welding compared to standard 316.
SA 213 TP 316L Stainless Steel Tube Manufacturing Process
ASME SA213 TP316L stainless steel tubes are primarily manufactured using seamless processes (extrusion or piercing) or welding processes, and are typically supplemented by cold finishing to meet the precise dimensional tolerances, high strength, and corrosion resistance required for high-pressure and high-temperature applications. The manufacturing process encompasses raw material casting, hot forming, solution annealing, pickling, and cold working (drawing/rolling), all aimed at achieving specific surface finish requirements (e.g., polishing, BA grade).
What is the chemical composition of SA 213 TP 316L?
ASME SA213 TP316L is an ultra-low carbon, corrosion-resistant austenitic stainless steel (UNS S31603) with a chemical composition comprising 16–18% chromium, 10–14% nickel, 2–3% molybdenum, and 0.035% carbon. It is commonly referred to as "marine-grade" stainless steel or A4 stainless steel.
SA 213 TP 316L Chemical Composition Requirements
| Element | % by Mass |
|---|---|
| C | ≤0.035 |
| Mn | ≤2.00 |
| P | ≤0.045 |
| S | ≤0.030 |
| Si | ≤1.00 |
| Cr | 16.0-18.0 |
| Ni | 10.0-14.0 |
| Mo | 2.00-3.00 |
what is ASME SA213 TP316L Tensile Strength?
ASME SA213 TP316L is an austenitic stainless steel seamless tube with a minimum tensile strength of 485 MPa (70 ksi) and a minimum yield strength of 170–205 MPa.
| Tensile & Hardness Tests | Requirements |
|---|---|
| Tensile Strength min. MPa [ksi] | 485 [70] |
| Yield Strength min. MPa [ksi] | 170 [25] |
| Elongation in 2", min. % | 35 |
| Brinell Hardness max. HBW | 192 |
| Vickers Hardness max. HV | 200 |
| Rockwell Hardness max. HRB | 90 |
Corrosion Resistance of ASME SA 213 TP 316L Heat Exchanger Tubes
ASME SA 213 TP 316L heat exchanger tubes exhibit exceptional corrosion resistance-attributed to their composition of 16–18% chromium, 10–14% nickel, and 2–3% molybdenum-and demonstrate outstanding performance, particularly in resisting pitting, crevice corrosion, and chloride-induced stress corrosion cracking. Furthermore, they effectively prevent intergranular corrosion during the welding process.
ASME SA213 TP316L Round Tube Dimensions
| Outer Diameter (OD) | OD in Millimeters (mm) | Wall Thickness (BWG) | Wall Thickness (mm) | Theoretical Weight ( kg/m ) |
| 1/2" | 12.70 mm | 18 BWG | 1.24 mm | 0.356 |
| 1/2" | 12.70 mm | 16 BWG | 1.65 mm | 0.457 |
| 5/8" | 15.88 mm | 18 BWG | 1.24 mm | 0.455 |
| 5/8" | 15.88 mm | 16 BWG | 1.65 mm | 0.588 |
| 3/4" | 19.05 mm | 18 BWG | 1.24 mm | 0.553 |
| 3/4" | 19.05 mm | 16 BWG | 1.65 mm | 0.720 |
| 3/4" | 19.05 mm | 14 BWG | 2.11 mm | 0.896 |
| 1" | 25.40 mm | 18 BWG | 1.24 mm | 0.751 |
| 1" | 25.40 mm | 16 BWG | 1.65 mm | 0.983 |
| 1" | 25.40 mm | 14 BWG | 2.11 mm | 1.232 |
| 1" | 25.40 mm | 12 BWG | 2.77 mm | 1.571 |
| 1-1/4" | 31.75 mm | 16 BWG | 1.65 mm | 1.245 |
| 1-1/2" | 38.10 mm | 14 BWG | 2.11 mm | 1.903 |
| 2" | 50.80 mm | 12 BWG | 2.77 mm | 3.335 |
Dimensional Tolerances (per ASTM A1016 / ASME SA1016)
SA213 tubes must comply with the general requirements of SA1016. These tolerances are critical for ensuring the tube fits perfectly into the tube sheet.
| Specified OD (inches) | Specified OD (mm) | Over (mm) | Under (mm) |
|
≤1.000" |
≤25.4 mm |
0.10 mm | 0.10 mm |
| > 1.000" to ≤1.500" | > 25.4 to ≤ 38.1 mm | 0.15 mm | 0.15 mm |
| > 1.500" to < 2.000" | > 38.1 to < 50.8 mm | 0.20 mm | 0.20 mm |
|
≥2.000" to < 2.500" |
≥50.8 to < 63.5 mm |
0.25 mm | 0.25 mm |
BWG to mm Conversion Chart (Reference)
| BWG Gauge | Inch Equivalent | Millimeter (mm) |
| 10 BWG | 0.134" | 3.40 mm |
| 12 BWG | 0.109" | 2.77 mm |
| 14 BWG | 0.083" | 2.11 mm |
| 16 BWG | 0.065" | 1.65 mm |
| 18 BWG | 0.049" | 1.24 mm |
| 20 BWG | 0.035" | 0.89 mm |
Where is SA 213 TP316L used?
ASME SA213 TP316L is a low-carbon austenitic stainless steel pipe used extensively for high-temperature and highly corrosive environments, particularly in power generation (boilers/superheaters), chemical processing, petrochemical refining, pharmaceutical equipment, and marine/offshore environments. Its low carbon increases resistance to welding sensitization.
Material testing: ASTM A213 TP 316/316L Tubes is checked by the professionals to ensure its strict quality before finally dispatching it. Hardness test, mechanical test, positive material identification (PMI), inter granular corrosion test (IGC), flaring test, flattening test etc are some test performed on the tube.
ASTM A213 Grade TP316L Stainless Steel Seamless Tube Packaging
All shipping documentation is provided for ASTM A213 Grade TP316L Stainless Steel Seamless Tube delivery from mill to customer.All the ASTM A213 Grade TP316L Stainless Steel Seamless Tube are supplied with standard end capes on both ends. Special types of end caps are supplied if required by customer.Shipping Marks are attached to each Wooden Crate, Wooden Box and Bundle packing.
