GX40NiCrSiNb35-26 (1.4852) chemical composition
Niobium-modified version of 1.4857. Nb forms stable carbides that refine the carbide network and raise creep-rupture strength; typical for reformer tubes, outlet manifolds and other high-temperature pressure parts in petrochemical plants.
- Designation
- GX40NiCrSiNb35-26
- Material no.
- 1.4852
- Standard
- EN 10295
- Also known as
- ≈ HP-Nb, HP40Nb
- Family
- Heat-resistant cast steel
Chemical composition (mass %)
| Element | min | max |
|---|---|---|
| CCarbon | 0.30 | 0.50 |
| SiSilicon | 1.00 | 2.50 |
| MnManganese | – | 2.00 |
| PPhosphorus | – | 0.04 |
| SSulphur | – | 0.03 |
| CrChromium | 24.0 | 27.0 |
| NiNickel | 33.0 | 36.0 |
| MoMolybdenum | – | 0.50 |
| NbNiobium | 0.80 | 1.80 |
| FeIron | remainder | |
Basis of values: Limits per EN 10295.
We cast GX40NiCrSiNb35-26
We produce heat-resistant castings by sand casting, and by centrifugal casting for cylindrical parts such as rings, bushings and sleeves. Every heat is analysed by OES; heat treatment, CNC machining in the group's Perama machine shop and EN 10204 3.1 certificates are available.
- Sand casting at our foundry in Mandra, Attica; centrifugal casting for bushings, sleeves and liners
- Heat treatment at the foundry (water, oil or air quench); CNC machining in our machine shop in Perama
- Spectrometer analysis of every heat, mechanical testing and NDT
- EN 10204 3.1 inspection certificates; ISO 9001 (both plants) and ISO 14001 (foundry) certified
Other grades in this family
For information only, without warranty: limits per the cited standard or, where stated, typical or house values; ≈ marks a comparable grade, not an equivalent. The current edition of the standard, the purchase order and the drawing govern.