AISI 304 | 1.4301 | BS 304S31 | X5CrNi18-10 | Stainless steel
Data sheet according to DIN EN 10088-3 | Material number AISI 304 / 1.4301
The material 1.4301, also known as AISI 304, BS 304S31 or X5CrNi18-10, is an austenitic chromium-nickel steel with high corrosion resistance. This grade of stainless steel has very low magnetisability and medium machinability. The material is suitable for welding, forging and cold forming. Please note, however, that the material is not resistant to intercrystalline corrosion when welded. Stainless steel 1.4301 (AISI 304 / BS 304S31 / X5CrNi18-10) has good polishability (bright polishing is possible) and can be ground and brushed. The material is also suitable for cold heading.
Specifications of the material
EN-grade 1.4301
EN-short name X5CrNi18-10
EN-standard 10088-3
Microstructure austenite
Comparable standards and designations
AFNOR Z7CN18-09
AISI 304
BS 304S31
ČSN 17240
GB 0Cr18Ni9
JIS SUS304
PN 0H18N9
UNE F.3504
UNI X5CrNi18-10
UNS S30400
SFS 725
SIS / SS 2333
Chemical composition of stainless steel AISI 304 / 1.4301
Physical properties
Magnetizability: low
Density (kg/dm³): 7,9
Thermal conductivity (up to 20°C): 15
Electronic resistance at room temperature (in Ω mm²/m): 0,73
Mechanical properties
The specified values refer to the diameter range ≤ 160 (Ø in mm) and 160 < d ≤ 250 (Ø in mm)*
Hardness in HB: ≤ 215
Yield strength Rp0.2 in Mpa: ≥ 190
Yield strength Rp1.0 in Mpa: ≥ 225
Strength Rm in Mpa: 500-700
Elongation at break A in % (longitudinal) at ≤ 160
* These data refer to mechanical properties at room temperature in the solution-annealed condition (according to EN 10088-3)
Yield strengths at elevated temperature in the solution-annealed condition
Temp in °C | 100 °C | 150 °C | 200 °C | 250 °C | 300 °C | 350 °C | 400 °C | 450 °C | 500 °C | 550 °C |
|---|---|---|---|---|---|---|---|---|---|---|
Rp0,2 in Mpa | 155 | 140 | 127 | 118 | 110 | 104 | 98 | 95 | 92 | 90 |
Rp1,0 in Mpa | 190 | 170 | 155 | 145 | 135 | 129 | 125 | 122 | 120 | 120 |
Weldability of stainless steel 1.4301
The stainless steel material 1.4301 (AISI 304 / X5CrNi18-10) can be used for all common welding processes (with the exception of gas welding). No filler material is required.
Note: When welded, the material is not resistant to intercrystalline corrosion. You can use the CEV calculator to determine the carbon equivalent of the steel.
Forgeability of the material
Material 1.4301 has good forging properties. After slow heating to approx. 1150°C - 1180°C, the material can be forged in the range of approx. 1180 - 950 °C. Cooling after forging should take place in water or air.
Machinability of the steel
Machinability is given. However, like all austenitic materials, stainless steel 1.4301 hardens during machining. Care should therefore be taken to ensure a correspondingly high cutting depth
Corrosion resistance
Stainless steel 1.4301 essentially has good corrosion resistance to natural environmental influences such as rain. However, the material is susceptible to intergranular corrosion in the welded state. The material should not be used in swimming pools (with added chlorine) and is also unsuitable in combination with salt water (seawater). Corrosion resistance in the forged state is impaired by scale or annealing colours, so these must be removed.
Heat treatment and hot forming
Solution heat treatment (cooling by air or water): 1000-1100 °C
Hot forming (cooling by air): 1200-900 °C
Application area of stainless steel AISI 304 / 1.4301
The stainless steel material 1.4301 (AISI 304 / X5CrNi18-10) is regularly used in various industrial sectors. These include container construction, the construction of household appliances and the furniture industry. The material is also used in architecture and the construction industry. Stainless steel 1.4301 (AISI 304 / X5CrNi18-10) is also regularly used in automotive manufacturing (vehicle construction), apparatus engineering, sanitary engineering (sanitary facilities) and the chemical industry.
Our stock of stainless steel wire 1.4301
Please note
The information given in this data sheet has been compiled to the best of our knowledge and is based on the current version of the relevant standard. It is considered for reference only and we assume no liability for any errors.
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