Seamless ASTM A511 304/304L Mechanical Tube
Mill plant: QINGSHAN steel
Standards: ASTM A511
Grades: 304/304L
Size: Round Tube:OD: 4-323mm, Wall Thickness: 0.2-6.0mm
Wiho metals is a leading stainless steel tubing supplier, manufacturer and processing center of the broadest stainless tubing and hollow section in China. Wiho metals produce and stock round, rectangle or square welded mechanical and structural steel tubing in various sizes and shapes. We supplying 304/304L stainless steel seamless hollow sections with a wide array of diameters and thicknesses and have the ability to customize your order with our stainless tube processing services.
We offer and supply the Stainless steel Round Tubing in ASTM A511 grade 304 and 304L for structural and ornamental applications where mechanical properties, appearance, or corrosion resistance is needed. The tubes are available as mill finish or polished in a variety of exterior dimensions and wall thicknesses. It also offers both strength and weldability for other applications.
ASTM A511 304/ 304L TubingChemical Composition
| Grades | C | Mn | Si | P | S | Cr，min | Ni，min | N |
| 304 | ≤0.07 | ≤2.0 | ≤0.75 | ≤0.045 | ≤0.03 | 18.0-20.0 | 8.0- 10.5 | / |
| 304L | ≤0.03 | ≤2.0 | ≤0.75 | ≤0.045 | ≤0.03 | 18.0-20.0 | 8.0- 12.0 | 0.10 |
ASTM A511 304/ 304L Mechanical Property
| Grade | Tensile Strength, ksi (min) | Yield Strength 0.2%, ksi (min) | Elongation % | Hardness (Brinell) MAX |
| 304 | 75 | 30 | 40 | 201 |
| 304L | 70 | 25 | 40 | 201 |
304/304L Tubing Allowable deviation of the outer diameter
| Types | O.D（D） | Available tolerance | |
| High grades | General grades | ||
| Unpolished and sandblasted | ≤25 | ±0.10 | ±0.20 |
| ＞25～＜50 | ±0.20 | ±0.30 | |
| ≥50 ±0.5% | ±0.5%D | ±0.7%D | |
| Grinding and polishing | ≤25 | ±0.10 | ±0.20 |
| ＞25～＜40 | ±0.15 | ±0.22 | |
| ≥40～＜50 | ±0.15 | ±0.25 | |
| ≥50～＜60 | ±0.18 | ±0.28 | |
| ≥60～＜90 | ±0.25 | ±0.30 | |
| ≥90～＜100 | ±0.30 | ±0.35 | |
| ≥100～＜200 | On agreement | ±0.5%D | |
We offer a variety of value-added secondary services for stainless round/square/rectangle tubing that meets your special requirements, We can provide high-grade appearance, precision laser cutting, saw cutting, bending, finishing 8K, mirror polishing, profiled pipe welding, laser and plasma cutting and other processing. Contact us for more information regarding specific requirements of ASTM A511 structural and mechanical stainless steel tubing, or call us now.
