
Kencotube is the top most producer & wholesaler in SS 347 Pipes & Tubes, which has slightly improved corrosion resistance over SS 321 in strongly oxidizing environments. Stainless Steel 347 Tubes is also advantageous for high temperature service because of its good mechanical properties. SS 347 Tubes offers higher creep and stress rupture properties than SS 304 and, particularly, SS 304L, which might also be considered for exposures where sensitization and intergranular corrosion are concerns. Alloy 347 Pipes Tubes is a columbium (niobium) / tantalum stabilized austenitic chromium-nickel stainless steel which was developed to provide an 18-8 type alloy with improved intergranular-corrosion resistance. 347 Stainless Steel Pipes Tubes has a slightly improved corrosion resistance over other alloys of stainless steel in strongly oxidizing environments as a result of the addition of columbium (niobium) and tantalum.
Grade 347 Pipes Tubes was developed for enhanced creep resistance and for higher strength at temperatures above 1000 Degree F (537 Degree C). Stainless Steel 347 Seamless Pipes does not perform well in chloride solutions, even in small concentrations, or in sulphuric acid. Stainless Steel 347 Welded Pipes should be considered for applications requiring intermittent heating between 800 Degree F (427 Degree C) and 1650 Degree F (899 Degree C), or for welding under conditions which prevent a post-weld anneal. Stainless Steel 347 EFW Pipes cannot be hardened by heat treatment, only by cold working. It can be easily welded and processed by standard shop fabrication practices.
Specifications | ASTM A/ASME SA213/A249/A269/A312/A358 CL. I to V ASTM A789/A790 |
Size | Seamless 347 Pipes and Tubes - 1/2" NB - 16" NB |
ERW 347 Pipes and Tubes | 1/2" NB - 24" NB |
EFW 347 Pipes and Tubes | 6" NB - 100" NB |
Wall Thickness | Schedule 5S - Schedule XXS. |
Dimensions | ASTM, ASME and API |
Schedule | SCH 10, SCH20, SCH30, SCH40, STD, SCH60, XS, SCH80, SCH120, SCH140, SCH160, XXS |
Type | Seamless / ERW / Welded / Fabricated / LSAW Pipes |
Length | Single Random, Double Random & Cut Length. |
Form | Round, Square, Rectangular, Hydraulic Etc. |
STANDARD | WERKSTOFF NR. | UNS | JIS | BS | EN | EURONORM |
---|---|---|---|---|---|---|
SS 347 | 1.4550 | S34700 | - | - | - | - |
Grade | Ni | Cr | Fe | Si | Mn | C | P | S | Cb+Ta |
---|---|---|---|---|---|---|---|---|---|
SS 347 | 11.00 | 18.00 | Bal | 1.00 | 2.00 | 0.080 | 0.045 | 0.030 | 10 x C |
Grade | Tensile strength (MPa) | Modulus of elasticity (GPa) | Elongation at break (%) | Hardness - Brinell |
---|---|---|---|---|
SS 347 | 520-1100 | 190-210 | 60 | 160-190 |
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