What is the difference between 1.4301 and AISI 304?
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If you're looking for reliable austenitic stainless steel for fabrication, construction, or industrial use, you've likely come across both 1.4301 and AISI 304. But what exactly is the difference between the two?
What is the difference between 1.4301 and AISI 304?
There is no significant technical difference between 1.4301 and AISI 304 - they are equivalent grades of austenitic stainless steel, known for their excellent corrosion resistance and weldability. 1.4301 is the European EN 10088 designation, while AISI 304 is the American standard (ASTM/ASME). Both refer to the same material with a typical composition of 18% chromium and 8% nickel.
| Property | 1.4301 (EN 10088) | AISI 304 (ASTM A240) |
|---|---|---|
| Standard | EN 10088-1 | ASTM A240/A276 |
| UNS Designation | – | UNS S30400 |
| Chromium (Cr) | 17.5 – 19.5% | 18.0 – 20.0% |
| Nickel (Ni) | 8.0 – 10.5% | 8.0 – 10.5% |
| Tensile Strength (MPa) | ≥500 MPa | 515–750 MPa |
| Yield Strength (MPa) | ≥200 MPa | ≥205 MPa |
| Density | 7.90 g/cm³ | 7.90 g/cm³ |
Is AISI 304 and SS 304 the same?
Yes, AISI 304 and SS 304 (Stainless Steel 304) refer to the same grade of stainless steel. "AISI" denotes the classification by the American Iron and Steel Institute, while "SS 304" is the general term used in global markets. Both terms describe the most widely used austenitic stainless steel, offering good corrosion resistance, formability, and strength.
What is the difference between 1.4301 and 1.4307 stainless steel?
In summary, EN 1.4301 (AISI 304) is generally preferred when higher mechanical strength and wear resistance are required, while EN 1.4307 (AISI 304L) is a better choice for applications involving extensive welding or exposure to corrosive environments.
What is the difference between 1.4401 and 1.4301 stainless steel?
The key difference between 1.4401 (AISI 316) and 1.4301 (AISI 304) is molybdenum content. 1.4401 contains around 2–2.5% molybdenum, which significantly improves its resistance to pitting and crevice corrosion, especially in chloride-rich environments like seawater. As a result, 1.4401 is preferred for marine, chemical, or coastal applications, while 1.4301 is suitable for general indoor or mildly corrosive conditions.
What is the difference between AISI 304 and AISI 431?
Stainless steel 431 is commonly used to produce nuts, bolts, pumps, and shafts. It contains higher levels of chromium and nickel than stainless steel 304, which gives it higher strength and hardness. As a result, it's an excellent option for high-stress applications that require high strength levels.
What is the price of 1.4301 material?
The price of 1.4301 stainless steel material depends on factors such as raw material costs (nickel and chromium), product form (coil, sheet, pipe), thickness, surface finish, and order quantity - contact GNEE today for a competitive quote tailored to your project needs!
Why Choose GNEE ?
GNEE has more than 18 years of experience in stainless steel pipe manufacturing and a complete testing system - 100% non-destructive testing, mechanical properties testing, MPI testing.
Packing: Each for Poly bag, Carton, Bundle, Steel crate, Wooden crate, Wooden case or customer request.
GNEE supplies high-quality 1.4301 / AISI 304 stainless steel sheets, plates, coils, and tubes that comply with EN 10088, ASTM A240, and ASME standards.
Our advantages:
✅ Customized sizes & surface finishes (2B, BA, No.4, Mirror)
✅ Third-party inspection certificates (EN 10204 3.1)
✅ Stable stock availability for quick delivery
✅ Competitive price per kg or ton
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