Silver Tubes is a premier exporter and manufacturer of Stainless Steel 347 and 347H Pipe Fittings. These fittings feature a distinctive blend of austenite and ferrite microstructures. Typically, the objective with Stainless Steel 347 Butt Weld Fittings is to achieve a balanced 50/50 mix, but commercial variants might lean towards a 40/60 ratio.
High chromium (19–32%) and molybdenum (up to 5%) characterize the 347 Butt Weld Pipe Fittings, with notably less nickel content than their austenitic counterparts. The 347H variant is celebrated for its excellent mechanical properties, which are especially beneficial for high-temperature applications. Stainless Steel 347H Butt Weld Fittings are also advantageous for tasks that forgo the annealing process post-welding.
SS 347 Pipe Fittings are optimal for components exposed to alternating heating and cooling, specifically in the 800°F to 1600°F range. For scenarios demanding repeated heating between 427°C and 899°C, SS 347H Pipe Fittings emerge as the top choice. Though the rich alloy content of the Alloy 347 Pipe Fittings can command a higher price, the 347H variant delivers comparable performance at a more budget-friendly rate, making it a favorite in certain niches.
Furthermore, the 347 Stainless Steel Pipe Fittings, often referred to by its typical composition as the 18/10 stainless (18% chromium, 10% nickel), finds extensive use in high-end culinary tools and quality cookware. Silver Tubes is dedicated to offering the finest in Stainless Steel 347 and 347H Pipe Fittings, addressing a diverse range of application needs.
| Specifications | ASTM A403 / ASME SA403 |
| Dimensions | ANSI B16.9, B16.25, B16.28, MSS-SP-43, MSS-SP-48, MSS-SP-59 |
| Size | 1/8" NB TO 48" NB. |
| Type | Seamless / Welded(100% X-Ray Welded) / Fabricated |
| Schedule | SCH 5S, 10S, 10, 20, 40S, 40, STD, 60, 80S, 80, XS, 100, 120, 140, 160 & XXS. |
| Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
| STANDARD | UNS | WERKSTOFF NR. | EN | JIS | GOST |
| SS 347 | S34700 | 1.4550 | X6CrNiNb18-10 | SUS 347 | 08Ch18N12B |
| SS 347H | S34709 | 1.4961 | X6CrNiNb18-12 | SUS 347H | - |
| Grade | C | Mn | Si | P | S | Cr | Cb | Ni | Fe |
| SS 347 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 - 20.00 | 10xC – 1.10 | 9.00 - 13.00 | 62.74 min |
| SS 347H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 - 19.00 | 8xC – 1.10 | 9.0 -13.0 | 63.72 min |
| Tensile Strength | Yield Strength (0.2%Offset) | Elongation | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | |||
| Psi – 75000, MPa – 515 | Psi – 30000, MPa – 205 | 35 % | 92 | 201 |
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