ASTM A511 MT304 Stainless Steel Mechanical Tubing
Certification:ISO, RoHS, IBR, AISI, ASTM, GB, EN, DIN, JIS
Shape:round
Technique:Cold Rolled
Surface Treatment:Sanded /Mirror/Hairline Brushed
Thickness:0.3-30mm
out Diameter:8-219mm
Length:5.8/6m or Custom
Stock:in Stock
Sample:Available
Transport Package:Standard Sea-Worthy Packing
MT304 stainless steel mechanical tubing, MT304 seamless pipe Manufacturer
If you are looking for high-quality mechanical tubing with excellent strength, formability, and corrosion resistance, ASTM A511 MT304 stainless steel mechanical tubing is your ideal solution. GNEE supplies precision-engineered MT304 seamless stainless steel tubing that meets the strict requirements of ASTM A511 for use in high-performance mechanical and structural applications.

Advantages
ASTM A511 MT304 tubing is a seamless austenitic stainless steel mechanical tube manufactured by cold finishing processes, typically annealed to enhance ductility and corrosion resistance. It is ideally suited for applications such as automotive components, heat exchangers, medical and pharmaceutical equipment, hydraulic and pneumatic systems, and precision mechanical parts that require tight dimensional tolerances.
GNEE supplies ASTM A511 MT304 seamless tubing with strict outer diameter tolerances controlled within ±0.1 mm, ensuring excellent dimensional consistency. This allows for seamless integration with precision instruments and mechanical assemblies, minimizing assembly gaps and errors, reducing rework due to dimensional mismatch, and improving equipment operational stability.
In the annealed condition, MT304 Seamless Mechanical Tubing delivers a minimum yield strength of ≥205 MPa and tensile strength of ≥515 MPa, offering sufficient load-bearing capacity and deformation resistance. It performs reliably in mechanical transmission and fluid transport systems under pressure and load. The tubing is also easy to bend, cut, and stamp, making it ideal for manufacturing complex structural components and improving production efficiency.
ASTM A511 stainless steel tube in Stock



If you need to get ASTM A511 MT304 stainless steel mechanical tubing prices or learn more about the product, please contact us now.
specification
| Specification | Details |
|---|---|
| Standard | ASTM A511 / A511M |
| Grade | MT304 |
| Process | Cold finished, annealed |
| Outer Diameter | 6mm – 114mm |
| Wall Thickness | 0.5mm – 10mm |
| Length | Custom lengths up to 12 meters |
| Tolerance | OD ±0.1mm, WT ±10% |
| Surface Finish | Bright annealed, pickled, or polished |
| Certificates | EN 10204 3.1, NDT reports (eddy current), RoHS |
ASTM A511 MT 304 stainless steel pipe Chemical Composition
| Grade | C≤ | Mn≤ | P≤ | S≤ | Si≤ | Ni | Cr | Mo | Ti |
| MT 304 | 0.08 | 2.0 | 0.040 | 0.030 | 1.00 | 8.0-11.0 | 18.0-20.0 | - | - |
A511 MT 304 Pipe Mechanical Properties
| Property | Metric Value | Imperial Value | Condition |
|---|---|---|---|
| Yield Strength (0.2% offset) | ≥ 205 MPa | ≥ 30,000 psi | Annealed |
| Tensile Strength | ≥ 515 MPa | ≥ 75,000 psi | Annealed |
| Elongation (in 50 mm) | ≥ 35% | ≥ 35% | Annealed |
| Hardness (Brinell) | ≤ 201 HB | ≤ 201 HB | Annealed |
| Hardness (Rockwell B) | ≤ 92 HRB | ≤ 92 HRB | Annealed |
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