321/321H Stainless Steel Hollow Sections
Mill plant: QINGSHAN steel
Standards: ASTM A554, A778
Round Tube Size: OD: 4-323mm, Wall Thickness: 0.2-6.0mm
Rectangle Tube Size: 10*20-130*170mm, Wall Thickness: u 0.2-6.0mm
Square Tube Size: 4*4mm-150*150mm, Wall Thickness: 0.2-6.0mm
Type: 180 Polish, Mill Finish, Welded-Ornamental
Surface treatment: polishing, wire drawing
Surface treatment: polishing, wire drawing
Wiho metals is a leading stainless steel tubing supplier, manufacturer and processing center of the broadest stainless tubing and hollow section in China. We produce and stock round, rectangle or square welded mechanical and structural steel tubing in various sizes and shapes. The 321/321H stainless steel hollow section supplied with a wide array of diameters and thicknesses and we have the ability to customize your order with our stainless tube processing services.
The grade 321/321H Stainless steel Round/Square/Rectangle Tubing in ASTM A554, 778 for structural or mechanical 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 A554 321/321H Rectangular Hollow Section Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | N | Ni | Ti |
| SS 321 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 5(C+N) – 0.70 max |
| SS 321H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 4(C+N) – 0.70 max |
ASTM A554 321/321H Structural Rectangular Hollow Section Mechanical Properties
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1457 °C | 515 MPa | 205 MPa | 35 % |
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 A544, A778 structural and mechanical stainless steel tubing, or call us now.
