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The 347H belongs to an austenitic high carbon stainless steel grade. A 347H stainless steel pipe is designed with an outstanding chemical concentration of chromium and nickel with columbium and tantalum used to stabilize them. This content gives these pipes enhanced corrosion and oxidation resistance properties across stress-induced setups. The Stainless Steel 347H Pipe doesn’t rupture or disorientate in temperatures ranging up to 1500 degrees F. These pipes showcase higher creep and stress rupture properties and are utilized in applications where sensitization is of the highest degree. SS 347H Pipe is designed with a density of 7.96 g/cm3 and is a little difficult to weld in place due to the higher content of carbon embedded in their composition. In comparison to these pipes, the 347H Stainless Steel Tube has higher strength and enhanced corrosion resistance properties. The components in this grade showcase excellent mechanical properties. The ASTM A312 TP 347H Round Pipes is not suited for the heat treatment procedure. These pipes are annealed at temperatures of 1950 degrees F, followed by a water quenching process to improve their resistance to attacks from acids.
The Stainless Steel 347H Seamless Pipe is the strongest type of pipe in this grade. Designed by passing hot steel billets through extruded the metal is very reliable and durable in high pressure and temperature applications. The SS 347H Welded Pipes offer a cost-effective alternative to seamless pipes. These pipes are preferred in moderate to low-pressure applications and are produced by welding pieces of sheets or strips in place. Stainless Steel 347H ERW Pipe is a unique pipe type in this grade that is welded in place by passing high voltage current through the metal. These pipes have a longitudinal seam and don’t require any filler material to weld in place. For any queries or questions contact us.

Specification Of 347H Stainless Steel Pipe
| Type | Welded / Seamless / Fabricated / ERW / LSAW Pipes |
| Form | Custom Pipes, Round Pipes, Square Pipes, “U” Shape, Rectangular Pipe, Hydraulic Pipes |
| Dimensions | API, ASME and ASTM |
| Specifications | ASME SA 312 / ASTM A 312 and ASTM A 358 ASME SA 358 |
| Size | 1/8 NB TO 30 Inches NB IN |
| Schedules | SCH20, SCH40, STD, SCH60, SCH80, SCH30, SCH80, SCH140, SCH160, XS, SCH120, XXS |
| SS 347H Pipes | 1/2 Inches NB – 16 Inches NB |
| ERW 347H Pipes | 1/2 Inches NB – 24 Inches NB |
| EFW 347H Pipes | 6 Inches NB – 100 Inches NB |
Chemical Composition Of Tp347H Stainless Steel Pipes
| Stainless Steel | Nickel | Magnesium | Silicon | sulfur | Carbon | Chromium | Phosphorus | Molybdenum | Nitrogen | |
| 347H | Minimum | 9 | 00.04 | 17 | 3 | |||||
| Maximum | 13 | 2 | 1 | 00.030 | 00.10 | 19 | 00.045 | 4 | ||
| Description | Per Unit (INR) |
|---|---|
| STAINLESS STEEL SEAMLESS PIPES / ASTM A 312 GRADE TP347H SIZE(114.30 Milimeter OD X 5.65 Milimeter THK X 6000M LENGTH | 195 |
| SS SEAMLESS PIPES / ASTM A 312 GRADE TP347H SIZE(48.26 Milimeter OD X 2.60 Milimeter THK X 6000 METER LENGTH | 185 |
Stainless Steel 347H Pipes Mechanical Properties
| SS Grade | Tensile Strength | Yield Strength | Elongation | Hardness | |
| Rockwell B | Brinell | ||||
| SS 347H | 515 | 205 | 40 | 92 | 201 |
Pressure Rating Of 347H Stainless Steel Seamless Pipe
| Pipes Size in inches | Schedule | Outside Diameter in Inch | Wall Thickness in Inch | Temperature | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 100 | 200 | 300 | 400 | 500 | 600 | 650 | 700 | 750 | ||||
| Allowable Stress | ||||||||||||
| 16700 | 16700 | 16700 | 15500 | 14400 | 13500 | 13200 | 12900 | 12600 | ||||
| 1" | 40 | 1.315 | 0.133 | 2205 | 2205 | 2205 | 2047 | 1902 | 1783 | 1743 | 1703 | 1664 |
| 80 | 1.315 | 0.179 | 3061 | 3061 | 3061 | 2841 | 2640 | 2475 | 2420 | 2365 | 2310 | |
| 160 | 1.315 | 0.250 | 4493 | 4493 | 4493 | 4170 | 3874 | 3632 | 3552 | 3471 | 3390 | |
| 1 1/2" | 40 | 1.900 | 0.145 | 1629 | 1629 | 1629 | 1512 | 1404 | 1317 | 1287 | 1258 | 1229 |
| 80 | 1.900 | 0.200 | 2303 | 2303 | 2303 | 2138 | 1986 | 1862 | 1821 | 1779 | 1738 | |
| 160 | 1.900 | 0.281 | 3362 | 3362 | 3362 | 3120 | 2899 | 2717 | 2657 | 2597 | 2536 | |
| 2" | 40 | 2.375 | 0.154 | 1371 | 1371 | 1371 | 1272 | 1182 | 1108 | 1083 | 1059 | 1034 |
| 80 | 2.375 | 0.218 | 1985 | 1985 | 1985 | 1843 | 1712 | 1605 | 1569 | 1534 | 1498 | |
| 160 | 2.375 | 0.344 | 3283 | 3283 | 3283 | 3047 | 2831 | 2654 | 2595 | 2536 | 2477 | |
| 3" | 40 | 3.500 | 0.216 | 1301 | 1301 | 1301 | 1208 | 1122 | 1052 | 1028 | 1005 | 982 |
| 80 | 3.500 | 0.300 | 1844 | 1844 | 1844 | 1712 | 1590 | 1491 | 1458 | 1425 | 1391 | |
| 160 | 3.500 | 0.438 | 2787 | 2787 | 2787 | 2587 | 2403 | 2253 | 2203 | 2153 | 2103 | |
| 4" | 40 | 4.500 | 0.237 | 1102 | 1102 | 1102 | 1023 | 950 | 891 | 871 | 851 | 831 |
| 80 | 4.500 | 0.337 | 1596 | 1596 | 1596 | 1482 | 1377 | 1291 | 1262 | 1233 | 1204 | |
| 160 | 4.500 | 0.531 | 2611 | 2611 | 2611 | 2424 | 2552 | 2111 | 2064 | 2017 | 1970 | |
| 5" | 40 | 5.563 | 0.258 | 965 | 965 | 965 | 896 | 832 | 780 | 763 | 746 | 728 |
| 80 | 5.563 | 0.375 | 1428 | 1428 | 1428 | 1325 | 1231 | 1154 | 1129 | 1103 | 1077 | |
| 160 | 5.563 | 0.625 | 2474 | 2474 | 2474 | 2296 | 2133 | 2000 | 1955 | 1911 | 1866 | |
| 6" | 40 | 6.625 | 0.280 | 877 | 877 | 877 | 814 | 756 | 709 | 693 | 677 | 661 |
| 80 | 6.625 | 0.432 | 1379 | 1379 | 1379 | 1280 | 1189 | 1115 | 1090 | 1065 | 1040 | |
| 160 | 6.625 | 0.719 | 2382 | 2382 | 2382 | 2211 | 2054 | 1925 | 1883 | 1840 | 1797 | |
| 8" | 40 | 8.625 | 0.322 | 771 | 771 | 771 | 716 | 665 | 623 | 610 | 596 | 582 |
| 80 | 8.625 | 0.500 | 1218 | 1218 | 1218 | 1131 | 1050 | 985 | 963 | 941 | 919 | |
| 160 | 8.625 | 0.906 | 2298 | 2298 | 2298 | 2133 | 1982 | 1858 | 1817 | 1775 | 1734 | |
| 10" | 40 | 10.750 | 0.365 | 699 | 699 | 699 | 649 | 603 | 565 | 553 | 540 | 528 |
| 80 | 10.750 | 0.594 | 1159 | 1159 | 1159 | 1075 | 999 | 937 | 916 | 895 | 874 | |
| 160 | 10.750 | 1.125 | 2289 | 2289 | 2289 | 2124 | 1974 | 1850 | 1809 | 1768 | 1727 | |
Types Of ASTM A312 347H Stainless Steel Pipe

347H Stainless Steel Pipe

ASTM A312 A213 A249 a269 Tp347H Stainless Steel Pipes

347H Stainless Steel Seamless Pipes

347H Stainless Steel Tubing

347H Stainless Steel Welded Pipes

347H Stainless Steel ERW Pipes

SS 347H Pipe

347H Stainless Steel Tube

A312 Gr TP347H EFW Pipes
347H Stainless Steel Pipes Stock List
| ASTM A213 TP347H Condenser Tube | AMS 5573 1/4hd Seamless Aero engine Pipes |
| ASTM A269 TP347H straight tube | AMS 5584 Welded furnace tube |
| JIS SUS347H Seamless Pipes | 347H SS Round Tube |
| SA312 TP347H Welded Pipes | AMS 5584 Seamless Tube |
| ASTM A312 TP347H Coiled Pipes | SS Inox 347H Capillary Pipes |
| ASTM A312 gr TP 347H Aerospace Pipes | AMS 5573 Electric Fusion Welding Pipes |
| SS 347H Grade Pipes | Type 347H SS Polished Pipes |
| 347H SS Seamless Square Pipes | Large Diameter 347H SS Tube |
| SS 347H ERW Pipes | 347H SS Instrumentation Pipes |
| High-pressure 347H SS Water Pipes | SS 347H Hexagonal Pipes |
| UNS S34709 Aisi 347H Corrugated Tube | SS 347H Round Tube |
| UNS S34709 Seamless Pipes | SS 347H Seamless Round Pipes |
| ASTM A358 TP347H Polished Pipes | 347H SS Ornamental Tube |
| 347H SS Exhaust Pipes | 347H SS Spiral Pipes |
| ASME SA213 TP347H Perforated Tube | UNS S34709 Flexible Tube |
| SA 688 TP347H Finned Tube | SA312 TP347H Dom Tube |
| S34709 AISI 347H Perforated Exhaust Tube | SS 347H Hypodermic Pipes |
| Material S34709 Aisi 347H Slotted Handrail Tube | SA312 TP347H Thin Wall Tube |
| En S34709 / Aisi 347H Thick Wall Tube | 347H SS Hydraulic Pipes |
| SS 347H Ornamental Pipes | SS 347H Fin Tube / Finned Tube |
| S34709 SS U Shaped Tube | 347H SS Square Tube Mirror Finish |
| S34709 Material Seamless Pipes | UNS S34709 Coaxial Tube |
| 347H SS Rectangular Pipes | 347H SS Hypodermic Pipes for Medical Needle |
| S34709 Instrument pipes | 347H SS Square pipes |
| Ultra-High Purity Electropolished SS 347H Tube | Thin Wall SS 347H Tube |
| 347H SS ERW pipes | Corrugated 347H SS Tube (CSST) for Gas |
| Jis 347H SS Coil pipes | SS 347H Seamless pipes |
| Schedule 10 Type 347H SS pipes | Schedule 40 Type 347H SS pipes |
| AMS 5573 1/8hd Seamless pipes | Polished 347H SS pipes |
| 347H SS Threaded pipes | SAE 30347H SS Rectangular Tube |
| SS 347H pipes | SS 347H pipes |
| 347H SS SCHEDULE 10 pipes | SS 347H SEAMLESS pipes |
| 347H SS Tube | 347H SS Exhaust pipes |
| SS 347H Tube | 347H SS Tubes |
| SS 347H WELDED Tubes | SS 347H erw Tubes |
| 347H SS exhaust Tubes | Schedule 5 347H SS Tubes |
| Schedule 20 347H SS Tubes | 347H SS seamless Tubes |
| Type 347H SS Tubes | SS 347H Cold Drawn Tubes |
| SS UNS S34709 Seamless Tubes | 347H SS seamless tube |
| 347H SS Seamless Tubes | ASTM A312 SS 347H Round Tubes |
| SS 347H Seamless Tube | TP 347H SS Polished Tubes |
| SS 347H ERW Tubes | ASTM A269 347H Tubes |
| ASTM A312 TP347H Tubes | TP 347H SS ERW Tubes |
| SS S34709 Rectangular Welded Tubes | 347H SS EFW Tubes |
| AMS 5573 Tube | SS 347H Seamless Tubes |
| UNS S34709 Square Tubes | 347H SS rectangular tube |
| 347H SS Tube | SS 347H Cold Rolled Coiled Tubes |
| ASTM A312 TP347H Pipes | SS 347H Oval Tube |
| SS 347H Seamless Tube & Pipes | 347H SS Seamless Pipes |
| 347H Rectangular Pipes | Stainless Steel 347H EFW Pipes |
| SS 347H Tube | 347H Stainless Steel Pipes |
| AMS 5573 Tube | Stainless Steel 347H Polished Tube |
| SS 347H welded round Pipes | Stainless Steel 347H precision Pipes |
| Stainless Steel 347H Welded Pipes & Tube | SS 347H Round Tube |
| UNS S34709 Square Pipes | 347H Stainless Steel Oval Pipes |
| ASTM A249 TP 347H SS Seamless Pipes | 347H Stainless Steel Pipes |
Test Done On SS 304H Round Tubes
ASTM A312 Tp347H Physical Properties
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (m/m/0C) | Thermal Conductivity (W/m.K) | Specific Heat 0-1000C (J/kg.K) | Electrical Resistivity (n.m) | |||
| 0-1000C | 0-3150C | 0-5380C | at 1000C | at 5000C | |||||
| 347H | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 500 | 720 |
| Material | WERKSTOFF NR. | UNS |
| GermanN | Usa | |
| TP347H | 1.4961 | S34709 |
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