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EN 1.4903 Details
EN 1.4903 Standard Download
| Category | Type | Grade | Microstructure | Designations |
|---|---|---|---|---|
| Grades | Stainless Steels | 1.4903 | Martensite | European - EN , 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 |
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.08 | 0.12 | ||
| Si | - | 0.5 | ||
| Mn | 0.3 | 0.6 | ||
| Ni | - | 0.4 | ||
| P | - | 0.025 | ||
| S | - | 0.015 | ||
| Cr | 8.0 | 9.5 | ||
| Mo | 0.85 | 1.05 | ||
| V | 0.18 | 0.25 | ||
| N | 0.03 | 0.07 | ||
| Nb | 0.06 | 0.10 | ||
| Al | - | 0.03 |
| Proof strength Rp0.2 (MPa) |
Tensile strength Rm (MPa) |
Impact energy KV (J) |
Elongation at fracture A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 587 (≥) | 987 (≥) | 44 | 21 | 43 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 323 |
| Property | Density kg/dm3 |
Temperature T °C/F |
Specific heat J / kgK |
Thermal conductivity W/mK |
Electric resistance µΩ·cm |
Modulus of elasticity kN/mm2 |
Expansion rate |
|---|---|---|---|---|---|---|---|
| 318 (≥) | 416 (≥) | 32 | 13 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 234 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 586 | 743 | 867 |
| Product type | Products | Dimension | Processes | Deliver Status |
|---|---|---|---|---|
| Plates / Sheets | Plates / Sheets | 0.08-200mm(T)*W*L | Forging, hot rolling and cold rolling | Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting |
| Steel Bar | Round Bar, Flat Bar, Square Bar | Φ8-1200mm*L | Forging, hot rolling and cold rolling, Cast | Black, Rough Turning, Shot Blasting, |
| Coil / Strip | Steel Coil /Steel Strip | 0.03-16.0x1200mm | Cold-Rolled & Hot-Rolled | Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting |
| Pipes / Tubes | Seamless Pipes/Tubes, Welded Pipes/Tubes | OD:6-219mm x WT:0.5-20.0mm | Hot extrusion, Cold Drawn, Welded | Annealed, Solution and Aging, Q+T, ACID-WASHED |
| Grade | Standard | Country | Application |
|---|---|---|---|
| 1.4903 | EN | European | Alloy special martensitic creep-resisting steel |
| X10CrMoVNb9-1 | EN | European | Alloy special martensitic creep-resisting steel |