X10CrMoVNb9-1 wn flanges ( 1.4903 ) forged flanges EN1092-1 Steel forged flanges
| Grade : | X10CrMoVNb9-1 |
| Number: | 1.4903 |
| Classification: | Alloy special martensitic creep-resisting steel |
| Density: | 7.7 g/cm ³ |
| Standard: | | EN 10302: 2008 Creep resisting steels, nickel and cobalt alloys | | EN 10028-2: 2009 Flat products made of steels for pressure purposes. Non-alloy and alloy steels with specified elevated temperature properties | | EN 10222-2: 2000 Steel forgings for pressure purposes. Ferritic and martensitic steels with specified elevated temperature properties | | EN 10216-2: 2014 Seamless steel tubes for pressure purposes. Technical delivery conditions. Non-alloy and alloy steel tubes with specified elevated temperature properties | | EN 10253-2: 2007 Butt-welding pipe fittings. Non alloy and ferritic alloy steels with specific inspection requirements | | EN 10088-1: 2005 Stainless steels. List of stainless steels | |
Chemical composition % of steel X10CrMoVNb9-1 (1.4903): EN 10302-2008 | 0.2 =Si=<0.5; P=<0.02; S=<0.005; Al=<0.02; Cu=<0.3; Ti=<0.01 according EN 10216-2:2014 |
| C | Si | Mn | Ni | P | S | Cr | Mo | V | N | Nb | Al |
| 0.08 - 0.12 | max 0.5 | 0.3 - 0.6 | max 0.4 | max 0.025 | max 0.015 | 8 - 9.5 | 0.85 - 1.05 | 0.18 - 0.25 | 0.03 - 0.07 | 0.06 - 0.1 | max 0.03 |
Mechanical properties of steel X10CrMoVNb9-1 (1.4903) | Nominal thickness (mm): | to 60 | 60 - 150 | 150 - 250 |
| Rm - Tensile strength (MPa) | 580-760 | 550-730 | 520-700 |
| Rm - Tensile strength (MPa) (+QT) | 620-850 |
| Nominal thickness (mm): | to 60 | 60 - 250 |
| ReH - Minimum yield strength (MPa) | 445 | 435 |
| Rp0.2 0.2% proof strength (MPa) (+QT) | 450 |
| KV - Impact energy (J) transverse, (+NT) | -20° 27 | 0° 34 | +20° 27-40 |
| KV - Impact energy (J) longitud., (+NT) | +20° 40 |
| A - Min. elongation at fracture (%) | 18-20 |