X5CrNi18-10 stainless steel is an Austenitic corrosion resistant stainless steel. The EN number is 1.4301
EN 10088-3 : Stainless steels
X5CrNi18-10 is same as casting stainless steel GX5CrNi19-10 defined in standard EN 10213 and EN 10283 and ISO 11972, the EN number is 1.4308.
EN 10213: 2007 Steel castings for pressure purposes
EN 10283: 2010 Corrosion resistant steel castings
ISO 11972:2015 specifies cast steels for general corrosion-resistant applications.
X5CrNi18-10 (EN 1.4301) Equivalent Stainless Steel Grades:
ASTM A743 CF8, ASTM A351 CF8, SS304
APPLICATION, it’s the most popular stainless steel.
Pump Cover for liquid ring vacuum pump
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GX5CrNi19-10 (EN1.4308) Chemical requirements and Mechanical Property
| Standard | EN 10213 | EN 10283 | ISO 11972 | EN 10088-3 |
| Grade | GX5CrNi19-10 | GX5CrNi19-10 | GX5CrNi19-10 | X5CrNi18-10 |
| EN number | 1.4308 | 1.4308 | 1.4308 | 1.4301 |
| C max | 0.07 | 0.07 | 0.07 | 0.07 |
| Si max | 1.50 | 1.50 | 1.5 | 1.00 |
| Mn max | 1.50 | 1.50 | 1.5 | 2.00 |
| P max | 0.04 | 0.04 | 0.04 | 0.045 |
| S max | 0.03 | 0.03 | 0.03 | 0.030 |
| Cr | 18.0-20.0 | 18.0-20.0 | 18.0-20.0 | 17.0-19.50 |
| Mo | – | – | – | – |
| Ni | 8.0-11.0 | 8.0-11.0 | 8.0-11.0 | 8.0-10.5 |
| Cu | 0.50 | – | – | – |
| N | – | – | – | |
| Tensile Mpa,min | 440-640 | 440 | 500-700 | |
| 0.2% proof Mpa, min | – | 175 | 175 | 190 |
| 1% proof Mpa, min | 200 | 200 | – | 225 |
| Elongation, %,min | 30 | 30 | 30 | Long 45 Tr 35 |
| Impact Kv,J, min | 60 | 60 | 60 | Long 100 Tr 60 |
| Thickness, mm | 150 | 150 | 150 | |
| Hardness, HB, max | – | 215 |
