Square Steel Tube A312
Material
The Square Steel A312 is made from a specific type of steel that meets the A312 standard. This standard specifies the requirements for seamless, welded, and heavily cold worked austenitic stainless steel square tubes for general corrosive and high-temperature service.
Specification
The specification of the Square Steel Pipe A312 includes various parameters that ensure its suitability for specific applications. The following table outlines the key specifications:
| Specification | Description |
| Standard | A312 |
| Type | Seamless, welded, heavily cold worked |
| Material | Austenitic stainless steel |
| Shape | Square |
| Size Range | Varies depending on application |
| Wall Thickness | Varies depending on application |
| Length | Customizable |
Chemical Composition
The chemical composition of the Square Steel Pipe A312 is crucial in determining its corrosion resistance, mechanical properties, and overall performance. The following table presents the typical chemical composition of this steel tube:
| Element | Composition Range |
| Carbon (C) | 0.08% max |
| Manganese (Mn) | 2.00% max |
| Phosphorus (P) | 0.045% max |
| Sulfur (S) | 0.030% max |
| Silicon (Si) | 1.00% max |
| Chromium (Cr) | 16.0 - 18.0% |
| Nickel (Ni) | 11.0 - 14.0% |
Mechanical Properties
The Square Steel Pipe A312 exhibits excellent mechanical properties that make it suitable for various applications. The following table illustrates the typical mechanical properties of this steel tube:
| Property | Value |
| Tensile Strength | 515 MPa min |
| Yield Strength | 205 MPa min |
| Elongation | 40% min |
| Hardness | HRB 95 max |
Steel Grade
The Square Steel Pipe A312 is commonly available in different steel grades that comply with the A312 standard. The specific steel grade depends on the application and the desired characteristics. Some commonly used steel grades for this tube include:
304/304L
316/316L
321/321H
Application
The Square Steel Tube A312 finds applications in various industries due to its excellent corrosion resistance, high-temperature stability, and mechanical strength. Some typical applications of this steel tube include:
Structural components in buildings and bridges
Piping systems for corrosive fluids
Heat exchangers
Automotive industry
Food processing equipment
Chemical processing plants
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