347 Stainless Steel
Type 347 stainless steel is similar to 321 stainless, 347 uses columbium as a stabilizing element to maximize its principal feature: resistance to intergranular corrosion. Uses include exhaust manifolds, flash boilers, stack liners, firewalls, pressure vessels, and boiler casings.
Products Offered:
- Wire Cloth
- Perforated Metal
- Expanded Metal
- Bar Grating
- Hex Metal
We also offer safety gratings, FRP grating and we custom fabricate all of our products.
Principal Design Features: Similar to 321 stainless, 347 uses columbium as a stabilizing element to maximize its principal feature: resistance to intergranular corrosion. It can be used in applications requiring repeated heating in the range of 800 and 1650 F (427-899 C).
Applications: High-temperature gaskets and expansion joints, outlet collectors, rocket engine parts, aircraft collector rings and exhaust manifolds, and chemical production equipment.
Machinability: Slightly tougher than 304 stainless, this material will produce the same tough stringy chips. The use of slow speeds and constant positive feeds will minimize this alloy’s tendency to work harden.
Welding: 347 may be welded by all commonly used fusion and resistance methods. Oxyacetylene welding is not recommended. When necessary, use AWS E/ER347 filler metal.
Rust and Stainless Steel
To get the necessary information, read our blog about metals that don’t rust.
Please get in touch with us today to learn more about how we can provide a high-quality stainless steel solution for your specific needs.
347 Chemistry
| Carbon | 0.08 max |
| Chromium | 17 - 19 |
| Iron | Balance |
| Manganese | 2 max |
| Nickel | 9 - 13 |
| Niobium | Min:5 x C |
| Phosphorus | 0.045 max |
| Silicon | 1 max |
| Sulphur | 0.03 max |
347 Physical Data
| Density (lb / cu. in.) | 0.29 |
| Specific Gravity | 8.03 |
| Specific Heat (Btu/lb/Deg F - [32-212 Deg F]) | 0.12 |
| Electrical Resistivity (microhm-cm (at 68 Deg F)) | 438 |
| Melting Point (Deg F) | 2600 |
| Modulus of Elasticity Tension | 28 |
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This publication may include technical inaccuracies or typographical errors. Changes may be periodically made to the information herein.