ER320LR
AWS A5.9 ER320LR
ASME SFA 5.9 ER320LR
ER320LR is basically a modified version of ER320, where the “residuals’’ — carbon, silicon, phosphorus and sulfur are specified at lower maximum levels. The columbium and manganese content of ER320LR is also maintained within a tighter range. These strict controls eliminate hot cracking and microfissuring frequently encountered in austenitic stainless steel.
TYPICAL WIRE CHEMISTRY (%)
- | ER320LR |
|---|---|
C | 0.025 |
Cr | 19.60 |
Ni | 34.10 |
Mo | 2.50 |
Cb & Ta | 0.25 |
Mn | 1.60 |
Cu | 3.40 |