What is the difference between 1.4541 and 1.4307?
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What material is equivalent to 1.4307?
The 1.4307 material is equivalent to AISI 304L stainless steel, which is a low-carbon version of the popular 1.4301 (or 304) grade. Other equivalents include the Japanese grade SUS304L, the UNS designation S30403, and the European designation X2CrNi18-9. This austenitic stainless steel offers superior corrosion and oxidation resistance, especially important for heavy gauge components that require improved weldability.
What material is 1.4541 equivalent to?
The material 1.4541, also known as EN X6CrNiTi18-10, is equivalent to the widely used American grade AISI 321. It is also designated as UNS S32100. This titanium-stabilized austenitic stainless steel offers good corrosion resistance and is a common choice for applications requiring high-temperature performance.
What is the difference between 1.4541 and 1.4307?
1.4307 is often considered a more modern and superior alternative to 1.4541 due to its better machinability, superior surface finish, and equivalent intergranular corrosion resistance without the disadvantages associated with titanium stabilization.
Chemical Composition (%)
| Element | 1.4541 (AISI 321) | 1.4307 (AISI 304L) |
|---|---|---|
| Carbon (C) | ≤ 0.08 | ≤ 0.03 |
| Chromium (Cr) | 17.0 – 19.0 | 17.0 – 19.0 |
| Nickel (Ni) | 9.0 – 12.0 | 8.0 – 10.5 |
| Molybdenum (Mo) | – | 2.0 – 3.0 |
| Titanium (Ti) | 0.34 – 0.70 | – |
| Manganese (Mn) | ≤ 2.0 | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 | ≤ 1.0 |
| Phosphorus (P) | ≤ 0.045 | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 | ≤ 0.030 |
| Nitrogen (N) | ≤ 0.11 | ≤ 0.11 |
| Iron (Fe) | Balance | Balance |
Mechanical Properties
| Property | 1.4541 (AISI 321) | 1.4307 (AISI 304L) |
|---|---|---|
| Tensile Strength (MPa) | 500 – 700 | 485 – 620 |
| Yield Strength (0.2% proof, MPa) | ≥ 210 | ≥ 170 |
| Elongation (%) | ≥ 40 | ≥ 40 |
| Hardness (HRB) | ≤ 95 | ≤ 95 |
| Modulus of Elasticity (GPa) | 193 | 193 |
Corrosion Resistance:
The addition of titanium imparts excellent resistance to intergranular corrosion to 1.4541 stainless steel, even in acidic environments. 1.4307 stainless steel offers comparable intergranular corrosion resistance to titanium grades, making it suitable for a wide range of applications, but may not be suitable for extremely high-temperature service.
Stabilization:
1.4541 stainless steel is stabilized with titanium to prevent the formation of chromium carbides at high temperatures, thereby improving its resistance to intergranular corrosion, especially after welding. 1.4307 stainless steel has an extremely low carbon content (less than 0.03%) and achieves comparable intergranular corrosion resistance without the addition of titanium.
Machinability and Surface Finish:
The addition of titanium and the resulting precipitates in 1.4541 stainless steel make it more difficult to machine than 1.4307, resulting in reduced tool life.
What is the difference between 1.4541 and 1.4301 material?
1.4541 is titanium-stabilized, making it more resistant to carbide precipitation during welding and high-temperature service, whereas 1.4301 lacks this stabilization and may become sensitive to corrosion when exposed to temperatures above 425°C
If you have a project need for 304L 1.4307 stainless steel bar, we welcome your order. GNEE has a large inventory of popular products for you to choose from. We process these bars into a variety of practical product forms, including sheet, coil, tube, bar, and wire. For detailed chemical composition and free samples, please contact our factory today. We offer competitive pricing and excellent service.
Click here to get the 1.4307 stainless steel material list
