Stainless Steel - Grade 309LSi / 1.4828
Description
ER 309LSi/1.4828 is a stainless steel filler metal primarily used for welding applications. It has a higher silicon content than ER309L, enhancing bead appearance and improving ease of welding. This grade is suitable for welding similar alloys in both wrought and cast forms and is particularly effective for joining dissimilar materials, such as mild steel to stainless steel.
Chemical Composition
The typical chemical composition of ER 309LSi is as follows:
| Element | Weight % (Typical) |
|---|---|
| Carbon (C) | 0.019 max |
| Silicon (Si) | 0.84 |
| Manganese (Mn) | 1.85 |
| Phosphorus (P) | 0.008 |
| Sulfur (S) | 0.006 |
| Chromium (Cr) | 23.50 |
| Copper (Cu) | 2.00 - 3.50 |
| Molybdenum (Mo) | 0.15 |
| Nickel (Ni) | 12.95 |
| Copper (Cu) | 0.75 max |
Mechanical Properties
The mechanical properties of ER 309LSi at room temperature are:
| Property | Value |
|---|---|
| Ultimate Tensile Strength | 89,000 psi (615 MPa) |
| Yield Strength (0.2%) | 60,500 psi (417 MPa) |
| Elongation | 35% |
| Reduction of Area | 60% |
Thermal & Physical Properties
Other Designations
Fabrication and Heat Treatment
ER 309LSi does not require heat treatment after welding. It can be used in various welding processes, including:
Applications
ER 309LSi is widely used in applications such as:
Supplied Forms
ER 309LSi is available in various forms, including:
Features
This datasheet summarizes the key aspects of the ER 309LSi grade, which is essential for professionals in welding and materials engineering.