UNS S3409 pipes are made with the various types of the UNS S3409 pipe specification like tolerance, end, condition, types, forms, shape, size, thickness, length, width, standards, dimensions, grade, finish, surface, and applications as well. UNS S3409 pipes are even designed with the help of several chemical combinations like carbon, nickel, manganese, chromium, sulfur, silicon, cobalt, titanium, and phosphorus.
Mechanical properties of TP347 SS Pipes and Tubes
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 347 | 515 | 205 | 40 | 92 | 201 |



Alloy 347H (UNS S3409) stainless steel plate is the higher carbon (0.04 – 0.10) version of the alloy. It was developed for enhanced creep resistance and for higher strength at temperatures above 1000°F (537°C). In most instances, the carbon content of the plate enables dual certification. Alloy 347 stainless steel plate cannot be hardened by heat treatment, only by cold working. It can be easily welded and processed by standard shop fabrication practices.
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