Material – EN 1.4903
Standard Specification for Seemless Steel Tubes for Pressure Purposes
Group - Ferrous Stainless Steel Alloys
Sub Group - EN 1.4903 Seemless Steel Tubes for Pressure Purposes
Application - Intended for Valve, Pump, General Engineering, Automotive and Other Industries
Grade Belongs to the Industry - Steel
| Chemical Composition | ||
|---|---|---|
| Carbon | C % | 0.080 - 0.120 |
| Silicon | Si % | 0.200 - 0.500 |
| Manganese | Mn % | 0.300 - 0.600 |
| Phosphorus | P % | 0.020 max. |
| Sulphur | S % | 0.005 max. |
| Chromium | Cr % | 8.000 - 9.500 |
| Molybdenum | Mo % | 0.850 - 1.050 |
| Nickel | Ni % | 0.400 max. |
| Vanadium | V % | 0.180 - 0.250 |
| Aluminium | Al % | 0.040 max. |
| Nitrogen | N % | 0.030 - 0.070 |
| Niobium | Nb % | 0.060 - 0.100 |
| Iron | Fe % | Balance |
| - | - | - |
| - | - | - |
| Heat Treatment |
|---|
| Normalising + Tempering |
| Mechanical Properties | |
|---|---|
| Tensile Strength in Mpa | 520 - 850 |
| Yield Strength in Mpa | 435 min. |
| Elongation in % | 17 min. |
| Reduction of Area in % | 68 - 73 |
| Hardness in BHN | - |
| Impact in Joule | 27 J @ RT |
Cross Reference Table
| Material | Standard | Country | Grade Belong to the Industry |
|---|---|---|---|
| J84090 | UNS | USA | Casting |
| A234 Grade WP91 | ASTM | USA | Pipe |
| A336 Grade F91 | ASTM | USA | Forging |
| TUZ 10 CDVNb 09-01 | AFNOR NF | France | Tube |
| X 10 CrMoVNb 9-1 | DIN | Germany | Steel |
| J80490 | UNS | USA | Casting |
| A217 Grade C12A | ASTM | USA | Casting |