ASTM A312 TP304 welded boiler tubes are austenitic stainless steel tubes with good corrosion resistance, suitable for high-temperature and general applications. Key information to know includes: 18% chromium and 8% nickel content; welded type requires no filler metal; and a variety of sizes, finishes, and end types are available. Furthermore, they must undergo hydrostatic testing or other non-destructive testing according to standard specifications.
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.
What is ASTM A312 TP304 Welded Steel Pipe?
A312 TP304 is an austenitic stainless steel designed with a high-quality nickel-chromium alloy ratio. ASTM A312 TP304 alloy exhibits excellent corrosion resistance and oxidation resistance under various stress environments. This versatile alloy possesses excellent mechanical properties, with a minimum tensile strength of 75 ksi and a minimum yield strength of 30 ksi. ASTM A312 TP304 steel pipe is available in hot-rolled or cold-rolled forms. These pipes range in wall thickness from 0.8 mm to 12 mm and are offered in various sizes and specifications to meet diverse project requirements.
Components of this grade can be manufactured as seamless, welded, and two-dimensional structures. Each type has its unique characteristics, making it suitable for different applications. ASME SA 312 TP 304 seamless steel pipe is produced using an extrusion process, where hot billets are extruded through a metal tube. This material exhibits resistance to high temperatures and pressures. This type of pipe is slightly more expensive than welded pipe. ASTM A312 TP 304 welded pipe is not suitable for pressure vessel classes. In these modules, plate or strip is rolled and welded through a series of shop welding processes. A312 TP304 welded pipe is relatively inexpensive and comes in sizes ranging from 1/8 inch to 36 inches in nominal diameter (NB). This type of pipe is versatile and designed for applications with outer diameters ranging from 6.35 mm to 114.3 mm. The robust and durable SA 312 TP 304 ERW pipe uses a longitudinal welding process to precisely weld metal into the pipe shape. This type of pipe is extremely durable and requires no filler material during welding.
Chemical Composition of ASTM A312 TP304 Welded Pipe
| Grade | Carbon | Sulfur | Manganese | Chromium | Phosphorus | Silicon | Nickel |
| TP304 | 0.08 | 0.03 | 2 | 18.0-20.0 | 0.045 | 1 | 8.0-11.0 |
Mechanical Properties of ASTM A312 TP304 Welded Pipe
| Material | Yield Strength | Heat | Tensile Strength | Temperure | Elongation |
| Ksi (MPa), Min. | Treatment | Ksi (MPa), Min. | Min.º F(º C) | ||
| TP304 | 30(205) | Solution | 75(515) | 1900 (1040) | 35 |
Equivalent of ASTM A312 TP304 Welded Pipe
| Werkstoff/ DIN | European Standards grades | ASTM grades |
|---|---|---|
| 1.4301 | X5CrNi18-10 | A 312 Grade TP304 |
Physical properties of A312 TP304 Welded Pipe
Grade |
Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (μm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C (J/kg.K) | Electrical Resistivity (nΩ.m) | |||
| 0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | |||||
| 304/L/H | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 500 | 720 |
Pressure rating of TP304Stainless Steel welded Pipe
| Pipe Size (inches) |
Pipe Schedule | 100 | 300 | 200 | 400 | 700 | 500 | 650 | 600 | 750 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 80 | 4213 | 3265 | 3634 | 3002 | 2528 | 2791 | 2580 | 2659 | 2501 |
| 1 | 160 | 6140 | 4759 | 5296 | 4375 | 3684 | 4068 | 3761 | 3876 | 3646 |
| 1.5 | 40 | 2257 | 1750 | 1947 | 1608 | 1354 | 1496 | 1383 | 1425 | 1340 |
| 1 | 40 | 3048 | 2362 | 2629 | 2171 | 1824 | 2019 | 1867 | 1924 | 1810 |
| 5 | 80 | 1981 | 1535 | 1709 | 1411 | 1189 | 1312 | 1213 | 1250 | 1176 |
| 4 | 40 | 1531 | 1187 | 1321 | 1091 | 919 | 1014 | 938 | 967 | 909 |
| 1.5 | 80 | 3182 | 2466 | 2744 | 2267 | 1909 | 2108 | 1949 | 2009 | 1889 |
| 2 | 40 | 1902 | 1474 | 1640 | 1355 | 1141 | 1260 | 1165 | 1201 | 1129 |
| 5 | 40 | 1342 | 1040 | 1158 | 956 | 805 | 889 | 822 | 847 | 797 |
| 2 | 80 | 2747 | 2129 | 2369 | 1957 | 1648 | 1820 | 1682 | 1734 | 1631 |
| 10 | 80 | 1609 | 1247 | 1388 | 1147 | 966 | 1066 | 986 | 1016 | 956 |
| 2 | 160 | 4499 | 3486 | 3880 | 3205 | 2699 | 2980 | 2755 | 2840 | 2671 |
| 1.5 | 160 | 4619 | 3580 | 3984 | 3291 | 2772 | 3060 | 2829 | 2916 | 2743 |
| 3 | 40 | 1806 | 1400 | 1558 | 1287 | 1084 | 1196 | 1106 | 1140 | 1072 |
| 10 | 40 | 974 | 755 | 840 | 694 | 584 | 945 | 596 | 615 | 578 |
| 3 | 80 | 2553 | 1979 | 2202 | 1819 | 1532 | 1691 | 1564 | 1612 | 1516 |
| 3 | 160 | 3840 | 2976 | 3312 | 2736 | 2304 | 2544 | 2352 | 2424 | 2280 |
| 4 | 80 | 2213 | 1715 | 1909 | 1577 | 1328 | 1466 | 1355 | 1397 | 1314 |
| 8 | 160 | 3175 | 2460 | 2738 | 2262 | 1905 | 2103 | 1944 | 2004 | 1885 |
| 4 | 160 | 3601 | 2791 | 3106 | 2566 | 2161 | 2386 | 2206 | 2273 | 2138 |
| 5 | 160 | 3414 | 2646 | 2945 | 2433 | 2049 | 2262 | 2091 | 2155 | 2027 |
| 6 | 40 | 1219 | 945 | 1052 | 869 | 732 | 808 | 747 | 770 | 724 |
| 6 | 80 | 1913 | 1483 | 1650 | 1363 | 1148 | 1267 | 1172 | 1208 | 1136 |
| 6 | 160 | 3289 | 2549 | 2836 | 2343 | 1973 | 2179 | 2014 | 2076 | 1953 |
| 8 | 40 | 1073 | 832 | 926 | 765 | 644 | 711 | 657 | 678 | 637 |
| 8 | 80 | 1692 | 1311 | 1459 | 1205 | 1015 | 1121 | 1036 | 1068 | 1005 |
| 10 | 160 | 3147 | 2439 | 2714 | 2242 | 1880 | 2085 | 1927 | 1986 | 1868 |
Why Choose Gnee Steel (Supplier Example)?
✅ Large stock of 304/316 stainless steel strip/coil, fast shipping.
✅ Factory direct sales, highly competitive prices, excellent value for money.
✅ Comprehensive quality assurance: Material Testing Certificate (MTC), Chemical Composition Certificate, and Mechanical Properties Certificate.
✅ Value-added services: Slitting, cutting, polishing, surface treatment.
✅ Worldwide shipping, secure and reliable packaging, and provision of export-required documentation.
Email: ru@gneesteelgroup.com
Gnee Steel specializes in the production of a wide range of stainless steel products. Gnee Steel's product packaging includes: Steel Strapping: Pipes with an outer diameter of 3 inches or less are typically strapped together with polypropylene film to prevent rust during ocean shipping, and then secured with steel strapping. Wooden Cases/Crates: Pipes are typically packaged in wooden cases or crates to protect the pipes during transportation, especially those that are longer or have larger diameters. Seaworthy Export Packaging: Suppliers typically use standard seaworthy export packaging methods, which may include a variety of materials and techniques to protect the pipes during transportation. Tarpaulin Packaging: This prevents rain, seawater, and other external factors from penetrating the export crates during transportation. Gnee Steel specializes in the production and sale of alloy materials. Gnee Steel's products are widely used in the aerospace, chemical, power, automotive, and nuclear energy sectors, and we can provide customized alloy material solutions based on customer needs. For alloy material pricing or customized alloy material solutions, please contact us for a quote: ru@gneesteelgroup.com
