What material is 1.4401?
1.4401 is an austenitic stainless steel with excellent corrosion resistance, surpassing 304 stainless steel. It maintains good performance in media such as seawater. It has a tensile strength of 520 MPa or higher and an elongation of 40% or higher. It can be processed into various shapes and sizes. It is widely used in the chemical industry, marine engineering, food processing, medical equipment, and other fields.
What material is equivalent to 1.4401?
Stainless steel types 1.4401 and 1.4404 are also known as grades 316 and 316L respectively. Grade 316 is an austenitic grade second only to 304 in commercial importance. 316 stainless steel contains an addition of molybdenum that gives it improved corrosion resistance.
| EU EN |
USA - |
Germany DIN,WNr |
Japan JIS |
France AFNOR |
England BS |
Italy UNI |
China GB |
Sweden SS |
Czechia CSN |
Austria ONORM |
Russia GOST |
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Chemical composition % of steel X2CrNi18-9 (1.4307): EN 10088-2-2005
1.4401 is an austenitic stainless - steel material. Its chemical composition mainly includes about 16.5 - 18.5% chromium, 10 - 13% nickel and 2 - 3% molybdenum, with low - carbon content (≤0.07%) and trace amounts of nitrogen (≤0.11%).
| C | Si | Mn | Ni | P | S | Cr | N |
| max 0.03 | max 1 | max 2 | 8 - 10.5 | max 0.045 | max 0.015 | 17.5 - 19.5 | max 0.11 |
Mechanical Properties of 1.4401
|
Yield Strength 0.2% (MPa) min |
Tensile strength (MPa) min |
Elongation (% in 50mm) min |
Rockwell B (HR B) max |
Brinell (HB) max |
|
205 |
515 |
40 |
95 |
217 |
Physical Properties of 1.4401
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Density (kg/ m cube) |
Elastic Modulus (GPa) |
Specific heat 0-100°C (J/kg.K) |
Electrical resistivity (nΩ.m) |
|
8000 |
193 |
500 |
740 |
Mean Coefficient of Thermal Expansion (μm/m/°C)
|
0-100°C |
0-315°C |
0-538°C |
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15.9 |
16.2 |
17.5 |
Thermal Conductivity (W/m.K)
|
at 100°C |
at 500°C |
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16.3 |
21.5
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What is the difference between 1.4401 and 1.4301 stainless steel?
EN 1.4401 (SUS316) incorporates molybdenum, another component forming the passive film. Molybdenum is about three times denser than chromium. Consequently, stainless steel 316 exhibits superior corrosion resistance compared to EN 1.4301, making it a suitable material for areas exposed to seawater.
What is the difference between 1.4404 and 1.4401 stainless steel?
1.4401 has a higher carbon content and may have slightly better strength but is more susceptible to intergranular corrosion after welding. 1.4404 has a lower carbon content, making it more suitable for welding and resistant to intergranular corrosion, with only a slight reduction in strength.
who choose us?
GNEE supplies hot-rolled and cold-rolled 1.4401 stainless steel plate. Our plate thicknesses range from 0.3 mm to over 50 mm and can be cut to size within tight tolerances. We provide MTCs (Mill Test Certificates) and offer 2B, BA, No. 1, or polished finishes. Custom packaging is available for export.
We also offer 1.4401 tubes, plates, bars, and custom components, ensuring a one-stop stainless steel sourcing solution. Contact us today for your project needs! Email: es@gescosteel.com