ASTM A511 Seamless Stainless Steel Mechanical Tubing
- Grade: MT 302, MT 303Se, MT 304, MT 304L, MT 305, MT 309S, MT 310S, MT 316, MT 316L, MT 317, MT 321, and MT 347, MT 403, MT 405, MT 410, MT 414, MT 416, MT 416 Se, MT 429/MT 430, MT 431, MT 440 A, MT 443, MT 446-1, MT 446-2, 29-4, and 29-4-2.
- Shapes: Round, Square, Rectangular
- Length: 3000-12000mm
- Type: Seamless
Features
ASTM A511/A511M Seamless Stainless Steel Mechanical Tubing and Hollow Bar
Chemical Requirements of Austenitic Stainless Steels
| Grade | C | Mn, max | P, max | S, max | Si, max | Ni | Cr | Mo | Ti |
| MT 302 | 0.08 to 0.20 | 2.00 | 0.04 | 0.03 | 1.00 | 8.0-10.0 | 17.0-19.0 | … | … |
| MT 303 | 0.15 max | 2.00 | 0.2 | 0.15 min | 1.00 | 8.0-10.0 | 17.0-19.0 | … | … |
| MT 303Se | 0.15 max | 2.00 | 0.04 | 0.03 | 1.00 | 8.0-11.0 | 17.0-19.0 | … | … |
| MT 304 | 0.08 max | 2.00 | 0.04 | 0.03 | 1.00 | 8.0-11.0 | 18.0-20.0 | … | … |
| MT 304L | 0.035 max | 2.00 | 0.04 | 0.03 | 1.00 | 8.0-13.0 | 18.0-20.0 | … | … |
| MT 305 | 0.12 | 2.00 | 0.04 | 0.03 | 1.00 | 10.0-13.0 | 17.0-19.0 | … | … |
| MT 309S | 0.08 max | 2.00 | 0.04 | 0.03 | 1.00 | 12.0-15.0 | 22.0-24.0 | … | … |
| MT 310S | 0.08 max | 2.00 | 0.045 | 0.035 | 1.50 | 19.0-22.0 | 24.0-26.0 | … | … |
| MT 316 | 0.08 max | 2.00 | 0.045 | 0.03 | 1.00 | 10.0-14.0 | 16.0-18.0 | 2.0-3.0 | … |
| MT 316L | 0.035 max | 2.00 | 0.045 | 0.03 | 1.00 | 10.0-15.0 | 16.0-18.0 | 2.0-3.0 | … |
| MT 317 | 0.08 max | 2.00 | 0.045 | 0.03 | 1.00 | 11.0-15.0 | 18.0-20.0 | 3.0-4.0 | … |
| MT 321 | 0.08 max | 2.00 | 0.045 | 0.03 | 1.00 | 9.0-13.0 | 17.0-20.0 | … | 5XC-0.60 |
| MT 347 | 0.08 max | 2.00 | 0.045 | 0.03 | 1.00 | 9.0-13.0 | 17.0-20.0 | … | 10XC-1.00 |
| N08820 | 0.070 max | 2.00 | 0.045 | 0.035 | 1.00 | 32.5-38.0 | 19.0-21.0 | 2.0-3.0 | … |
| N08367 | 0.030 max | 2.00 | 0.045 | 0.03 | 1.00 | 23.5-25.5 | 20.0-22.0 | 6.0-7.0 | … |
| N08800 | 0.10 max | 1.50 | 0.04 | 0.015 | 1.00 | 30.0-35.0 | 19.0-23.0 | … | … |
| N08810 | 0.10 max | 1.50 | 0.04 | 0.015 | 1.00 | 30.0-35.0 | 19.0-23.0 | … | … |
| N08811 | 0.10 max | 1.50 | 0.04 | 0.015 | 1.00 | 30.0-35.0 | 19.0-23.0 | … | … |
| N08904 | 0.020 max | 2.00 | 0.045 | 0.035 | 1.00 | 23.0-28.0 | 19.0-23.0 | 4.0-5.0 | … |
| N08925 | 0.020 max | 2.00 | 0.045 | 0.03 | 1.00 | 24.0-26.0 | 19.0-21.0 | 3.0-4.0 | … |
| N08926 | 0.020 max | 2.00 | 0.045 | 0.03 | 1.00 | 24.0-26.0 | 19.0-21.0 | 6.0-7.0 | … |
| S20910 | 0.06 max | 4.0-6.0 | 0.03 | 0.06 | 0.75 | 4.0-6.0 | 20.5-23.5 | 1.50-3.0 | 0.10-0.30 |
Chemical Requirements of Ferritic and Martensitic Stainless Steels
| Grade | C, max | Mn, max | P, max | S, max | Si, max | Ni | Cr | Mo | Al | Cu | N |
| Martensitic | |||||||||||
| MT 403 | 0.15 | 1.00 | 0.040 | 0.030 | 1.00 | 0.50 max | 11.5-13.0 | 0.60 max | … | … | … |
| MT 410 | 0.15 | 1.00 | 0.040 | 0.030 | 1.00 | 0.50 max | 11.5-13.5 | … | … | … | … |
| MT 414 | 0.15 | 1.00 | 0.040 | 0.030 | 1.00 | 0.50 max | 11.5-13.5 | … | … | … | … |
| MT 416Se | 0.15 | 1.25 | 0.060 | 0.15 | 1.00 | … | 12.0-14.0 | … | … | … | … |
| MT 431 | 0.20 | 1.00 | 0.040 | 0.030 | 1.00 | 1.25-2.50 | 15.0-17.0 | … | … | … | … |
| MT 440A | 0.60 to 0.75 | 1.00 | 0.040 | 0.030 | 1.00 | … | 16.0-18.0 | 0.75 max | … | … | … |
| Ferritic | |||||||||||
| MT 405 | 0.08 | 1.00 | 0.040 | 0.030 | 1.00 | 0.50 max | 11.5-14.5 | … | 0.10-0.30 | … | … |
| MT 429 | 0.12 | 1.00 | 0.040 | 0.030 | 1.00 | 0.50 max | 14.0-16.0 | … | … | … | … |
| MT 430 | 0.12 | 1.00 | 0.040 | 0.030 | 1.00 | … | 16.0-18.0 | … | … | … | … |
| MT 443 | 0.08 | 1.00 | 0.040 | 0.030 | 1.00 | … | 18.0-23.0 | … | … | 0.90-1.25 | 0.25 max |
| MT 446-1 | 0.20 | 1.50 | 0.040 | 0.030 | 1.00 | … | 23.0-30.0 | … | … | 0.25 max | … |
| MT 446-2 | 0.20 | 1.50 | 0.040 | 0.030 | 1.00 | … | 23.0-30.0 | … | … | … | … |
| 29-4 | 0.10 | 1.00 | 0.030 | 0.025 | 1.00 | … | 28.0-30.0 | 3.5-4.2 | … | 0.15 max | 0.020 max |
| 29-4-2 | 0.0010 | 0.30 | 0.020 | 0.020 | 1.00 | … | 28.0-30.0 | 3.5-4.2 | … | 0.15 max | 0.020 max |
Chemical Requirements of Austenitic-Ferritic Stainless Steels
| Grade | C, max | Mn, max | P, max | S, max | Si, max | Ni | Cr | Mo | N | Cu | Other Elements |
| S31260 | 0.030 | 1.00 | 0.030 | 0.030 | 0.75 | 5.5-7.5 | 24.0-26.0 | 2.5-3.5 | 0.10-0.30 | 0.20-0.80 | W 0.10-0.50 |
| S31803 | 0.030 | 2.00 | 0.030 | 0.020 | 1.00 | 4.5-6.5 | 21.0-23.0 | 2.5-3.5 | 0.08-0.20 | … | … |
| S32205 | 0.030 | 2.00 | 0.030 | 0.020 | 1.00 | 4.5-6.5 | 22.0-23.0 | 3.0-3.5 | 0.14-0.20 | … | … |
| S32506 | 0.030 | 1.00 | 0.030 | 0.020 | 0.75 | 5.5-7.5 | 24.0-26.0 | 1.5-3.0 | 0.05-0.25 | 0.50-1.50 | W 0.05-0.30 |
| S32507 | 0.030 | 1.50 | 0.035 | 0.020 | 0.80 | 8.5-9.5 | 24.0-26.0 | 3.0-4.5 | 0.24-0.32 | 0.50-1.00 | … |
| S32750 | 0.030 | 1.20 | 0.035 | 0.020 | 0.80 | 6.0-8.0 | 24.0-26.0 | 3.0-5.0 | 0.24-0.32 | … | … |
| S32760 | 0.030 | 1.00 | 0.030 | 0.010 | 1.00 | 6.0-8.0 | 24.0-26.0 | 3.0-4.0 | 0.20-0.30 | 0.50-1.00 | W 0.50-1.00 |
| S32900 | 0.08 | 2.00 | 0.040 | 0.030 | 1.00 | 3.0-5.0 | 23.0-28.0 | 1.0-2.0 | 0.05-0.20 | … | … |
| S32950 | 0.030 | 1.00 | 0.030 | 0.020 | 1.00 | 5.0-7.0 | 28.0-30.0 | 2.5-3.5 | 0.10-0.30 | 0.50-1.00 | W 2.1-2.5, Co 0.5-2.0 |
| S39274 | 0.030 | 1.00 | 0.030 | 0.020 | 0.75 | 6.0-8.0 | 24.0-26.0 | 2.5-3.5 | 0.24-0.32 | 0.50-1.00 | … |
| S39277 | 0.030 | 1.50 | 0.030 | 0.020 | 1.00 | 6.5-8.5 | 24.0-26.0 | 3.0-4.0 | 0.24-0.32 | 0.50-1.00 | … |
Technical Specifications
| Specification | Value |
| Standard | ASTM A511/A511M Seamless Stainless Steel Mechanical Tubing and Hollow Bar |
| Grade | MT 302, MT 303Se, MT 304, MT 304L, MT 305, MT 309S, MT 310S, MT 316, MT 316L, MT 317, MT 321, and MT 347, MT 403, MT 405, MT 410, MT 414, MT 416, MT 416 Se, MT 429/MT 430, MT 431, MT 440 A, MT 443, MT 446-1, MT 446-2, 29-4, and 29-4-2. |
| Manufacturing Process | Cold working or Hot working |
| Shape | Round, Square, Rectangular, or Special |
| Dimension | Round: OD 1″ – 12 3/4″ (3.18 – 313.8mm) WT: 2 – 100mm Square: 25 x 25 – 350 x 350mm x 2 – 20mm Rectangular: 25 x 38 – 250 x 300mm x 2 – 20mm |
| Length | 3000-12000mm |
| Delivery Condition | Annealed |
| Inspection Certificate | EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection) |
| Tests | Chemical analysis, Tensile test, Intergranular corrosion test, Metallographic examination |
Packing
Plain ends. Small-diameter pipes are packaged in wooden crates, and large-diameter pipes are wrapped in woven bags.
Application
Automotive: Drive shafts, axles, and suspension components.
Aerospace: Structural components and hydraulic systems.
Industrial Equipment: Rollers, cylinders, and bearings.
Construction: Structural supports and frameworks.
Oil and Gas: Drilling rigs and offshore platforms.
Manufacturing: Machined parts and tooling.
