Introduction to ASTM A312 TP 316/316L Stainless Steel Pipe
ASTM A312 TP 316/316L stainless steel tubing is a low-carbon version of 316 stainless steel. Due to the addition of molybdenum, this steel effectively prevents boundary carbide precipitation (sensitization), making it widely used in harsh corrosive environments. This material is commonly used for thick-gauge welded components, requiring post-weld annealing only when used in high-stress environments. 316L is widely used in marine applications due to its excellent corrosion resistance.
What is ASTM A312 TP 316 material?
A312 TP316 is an austenitic stainless steel alloy. ASTM A312 TP316 is manufactured with an excellent composition of nickel, chromium, and molybdenum, making it widely applicable across various industries. This steel exhibits excellent corrosion resistance and oxidation resistance in a variety of corrosive and oxidizing media.
Composition of ASTM A312 TP 316 / 316L Stainless Steel Seamless Pipes and Tubes
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 316 | Min | - | - | - | 0 | - | 16.0 | 2.00 | 10.0 | - |
| Max | 0.08 | 2.0 | 0.75 | 0.045 | 0.03 | 18.0 | 3.00 | 14.0 | 0.10 | |
| 316L | Min | - | - | - | - | - | 16.0 | 2.00 | 10.0 | - |
| Max | 0.03 | 2.0 | 0.75 | 0.045 | 0.03 | 18.0 | 3.00 | 14.0 | 0.10 |
Mechanical Properties of ASTM A312 TP 316 / 316L Stainless Steel Seamless Pipes and Tubes
| Grade | Tensile Str (MPa) min |
Yield Str 0.2% Proof (MPa) min |
Elong (% in 50mm) min |
Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 316 | 515 | 205 | 40 | 95 | 217 |
| 316L | 485 | 170 | 40 | 95 | 217 |
Physical Properties of ASTM A312 TP 316 / 316L Stainless Steel Seamless Pipes and Tubes
| Grade | Density (kg/m3) |
Elastic Modulus (GPa) |
Mean Co-eff of Thermal Expansion (m/m/0C) | Thermal Conductivity (W/m.K) |
Specific Heat 0-1000C (J/kg.K) |
Elec Resistivity (nΩ.m) |
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| 0-1000C | 0-3150C | 0-5380C | At 1000C | At 5000C | |||||
| 316/L | 8000 | 193 | 15.9 | 16.2 | 17.5 | 16.3 | 21.5 | 500 | 740 |
Grade Specification Comparison of ASTM A312 TP 316 / 316L Stainless Steel Seamless Pipes and Tubes
| Grade | UNS No |
Old British | Euronorm | Swedish SS |
Japanese JIS |
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| BS | En | No | Name | ||||
| 316 | S31600 | 316S31 | 58H, 58J | 1.4401 | X5CrNiMo17-12-2 | 2347 | SUS 316 |
| 316L | S31603 | 316S11 | - | 1.4404 | X2CrNiMo17-12-2 | 2348 | SUS 316L |
Packaging for ASTM A312 TP 316/316L Stainless Steel Seamless Tubes
ASTM A312 TP 316/316L stainless steel seamless tubes are individually packaged in plastic bags, with the outer layer of the tube wrapped in waterproof material and secured with nylon rope. Clear labels are affixed to the outside of the packaging for easy identification of quantity and product number. We exercise extra care during handling and transportation. SS 316L ASTM A312 seamless tubes will be packaged according to international standards, secured with strapping before being loaded into containers to prevent any damage.
Delivery Time: 10-25 days. If sufficient stock is available, shipment can be made as soon as possible.
Gnee Steel supplies high-quality 316 stainless steel pipes, seamless pipes, welded pipes, and custom-made products that meet global standards. With competitive pricing, fast delivery, and expert technical support, we help manufacturers achieve better performance and reliability in every project.
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