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A554 300 Grade Stainless Steel Mechanical Tubing
This specification covers welded stainless steel tubing for mechanical applications where appearance, mechanical properties, or corrosion resistance is needed.
300 Grade Stainless Steel Mechanical Tubing Chemical Requirements
| Grade | Composition, % | ||||||||
| Carbon | Manganese | Phosphorus | Surfur | Silicon | Nickel | Chromium | Molybdenum | Titanium | |
| max | max | max | max | max | |||||
| Austenitic | |||||||||
| MT-304 | 0.08 | 2 | 0.04 | 0.03 | 1 | 8.0-11.0 | 18.0-20.0 | ... | ... |
| MT-304L | 0.035 | 2 | 0.04 | 0.03 | 1 | 8.0-13.0 | 18.0-20.0 | ... | ... |
| MT-305 | 0.12 | 2 | 0.04 | 0.03 | 1 | 10.0-13.0 | 17.0-19.0 | ... | ... |
| MT-309S | 0.08 | 2 | 0.04 | 0.03 | 1 | 12.0-15.0 | 22.0-24.0 | ... | ... |
| MT-309S-Cb | 0.08 | 2 | 0.04 | 0.03 | 1 | 12.0-15.0 | 22.0-24.0 | ... | ... |
| MT-310S | 0.08 | 2 | 0.04 | 0.03 | 1 | 19.0-22.0 | 24.0-26.0 | ... | ... |
| MT-316 | 0.08 | 2 | 0.04 | 0.03 | 1 | 10.0-14.0 | 16.0-18.0 | 2.0-3.0 | ... |
| MT-316L | 0.035 | 2 | 0.04 | 0.03 | 1 | 10.0-15.0 | 16.0-18.0 | 2.0-3.0 | ... |
| MT-317 | 0.08 | 2 | 0.04 | 0.03 | 1 | 11.0-14.0 | 18.0-20.0 | 3.0-4.0 | ... |
| MT-321 | 0.08 | 2 | 0.04 | 0.03 | 1 | 9.0-13.0 | 17.0-20.0 | ... | |
| MT-347 | 0.08 | 2 | 0.04 | 0.03 | 1 | 9.0-13.0 | 117.0-20.0 | ... | ... |
| Ferritic | |||||||||
| MT-429 | 0.12 | 1 | 0.04 | 0.03 | 1 | 0.50 max | 14.0-16.0 | ... | ... |
| MT-430 | 0.12 | 1 | 0.04 | 0.03 | 1 | 0.50 max | 16.0-18.0 | ... | ... |
| MT-430-Ti | 0.1 | 1 | 0.04 | 0.03 | 1 | 0.075 max | 16.0-19.5 | ... | 5 x C min. 0.75 max |
