304 vs 304L Stainless Steel Key Differences

1. What is the carbon content difference between 304 and 304L? 304: ≤0.08%; 304L: ≤0.03%.

2. Which is better for welding, 304 or 304L? 304L, as its low carbon content prevents sensitization and intergranular corrosion after welding.

3. When should I choose 304 instead of 304L? Choose 304 for applications requiring higher high-temperature strength, such as high-heat industrial parts.

4. Is 304L more expensive than 304? Yes, 304L's stricter carbon control increases its cost by about 8-15%.

5. What is the UNS code for 304L stainless steel? UNS S30403.