Alloy 304L is a low-carbon version of Alloy 304, which is a commonly used stainless steel grade. This lower carbon content provides certain benefits in terms of improved weldability and resistance to sensitization, a condition that can lead to corrosion in certain environments.
Alloy 304L, like Alloy 304, offers excellent corrosion resistance in a variety of environments.
The reduced carbon content in Alloy 304L improves its weldability compared to Alloy 304. It is less likely to experience sensitization during welding, which can lead to the formation of chromium carbides and reduce corrosion resistance in certain environments.
Available tube product forms
Typical Applications
- Chemical processing equipment
- Food and beverage industry
- Pharmaceuticals industry
- Heat exchangers
Typical manufacturing specifications
- ASTM A240/A240M
- ASTM A276/A276M
- ASTM A312/A312M
Industries predominantly using this grade
Technical Data
Mechanical Properties
| Tensile Strength |
485 MPa (70,000 psi) |
| Yield Strength (0.2% Offset) |
170 MPa (25,000 psi) |
| Elongation |
40% (in 50 mm) |
| Hardness (Brinell) |
201 HB max |
Precautions required to prevent sensitization and intergranular corrosion after welding.
Physical Properties
| Density |
7.93 g/cm³ (0.286 lb/in³) |
Melting Point
|
1400 - 1450°C (2552 - 2642°F) |
| Electrical Conductivity |
1.45 x 10^6 S/m |
| Thermal Resistivity |
16.2 W/m·K (9.41 BTU·in/hr·ft²·°F) |
| Specific Heat Capacity |
0.50 J/g·°C (0.12 BTU/lb·°F) |
Chemical Composition (% by weight)
|
Element |
Min |
Max |
|
Cr |
18 |
20 |
|
Ni |
8 |
12 |
| C |
- |
0.03 |
|
Mn |
-
|
2 |
|
Si |
-
|
0.75 |
|
P |
- |
0.045 |
|
S |
- |
0.03 |