What is the material equivalent to 1.4303 stainless steel?
EN 1.4303 stainless steel is equivalent to AISI 305. It's also known as X4CrNi18-12. This austenitic stainless steel is characterized by its good corrosion resistance and suitability for welding and cold forming.
1.4303 Stainless Steel Equivalent Grades
| EU EN |
USA - |
Japan JIS |
France AFNOR |
England BS |
Russia GOST |
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| X4CrNi18-12 (1.4303) |
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1.4303 stainless steel standard
| Grade : | X4CrNi18-12 | |||||
| Number: | 1.4303 | |||||
| Classification: | Austenitic stainless steel | |||||
| Density: | 7.9 g/cm ³ | |||||
| Standard: |
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1.4303 Stainless Steel Chemical Properties
| Standard | Grade | C | Mn | Cr | Ni | Mo | N | Other |
| Typical | 4303 | 0.04 | 17.7 | 12.5 | ||||
| ASTM A240 | TYPE 305 | ≤0.12 | ≤2.00 | 17.0-19.0 | 10.5-13.0 | |||
| EN 10088-2 | 1.4303 | ≤0.06 | ≤2.0 | 17.0-19.0 | 11.0-13.0 | ≤0.10 | ||
| EN 10088-3 | 1.4303 | ≤0.06 | ≤2.00 | 17.0-19.0 | 11.0-13.0 | ≤0.10 |
Mechanical Properties-soft annealed condition at room temperature
Moderate strengths can be reached at elevated temperatures (~550 °C/1022 °F). Temperatures for excessive scaling are close to 850 °C/1562 °F.
| Standard | Grade | Rp0.2 | Rp1.0 | Rm | Elongation | Impact strength | Rockwell | HB | HV |
| MPa | MPa | MPa | % | J | |||||
| Product type: Cold rolled coil and sheet | |||||||||
| Typical (thickness 1 mm) | 260 | 280 | 570 | 70 | |||||
| ASTM A240 | TYPE 305 | ≥ 205 | ≥ 515 | ≤ 88HRB | ≤ 183 | ||||
| EN 10088-2 | 1.4303 | ≥ 220 | ≥ 250 | 500-650 | |||||
| Product type: Hot rolled coil and sheet | |||||||||
| Typical (thickness 4 mm) | 300 | 340 | 570 | 57 | 77 | ||||
| ASTM A240 | TYPE 305 | ≥ 205 | ≥ 515 | ≤ 183 | |||||
| Product type: Hot rolled plate | |||||||||
| Typical (thickness 15 mm) | 235 | 265 | 555 | ||||||
| ASTM A240 | TYPE 305 | ≥ 205 | ≥ 515 | ≤ 183 | |||||
| Product type: Semifinished (bloom, billet, ingot, slab) | |||||||||
| Typical | 250 | 280 | 570 | 50 | |||||
1.4303 Stainless Steel Physical Properties-EN 10088
| Density | Modulus of elasticity | Thermal exp. at 100 °C | Thermal conductivity | Thermal capacity | Electrical resistance | Magnetizable |
| kg/dm3 | GPa | 10-6/°C | W/m°C | J/kg°C | µΩm | |
| 7.9 | 200 | 16,0 | 15 | 500 | 0.73 | No |
1.4303 vs 1.4301
1.4303 and 1.4301 are both austenitic stainless steels, but 1.4303 has a higher nickel content, resulting in improved corrosion resistance, particularly in cold heading applications. While 1.4301 (also known as AISI 304) is the most versatile and widely used stainless steel, 1.4303 offers enhanced performance in certain situations.