| ACI/CAST GRADE |
CAST ASTM | CAST EN/DIN | CAST UNS | WROUGHT UNS |
WROUGHT GRADE |
|---|---|---|---|---|---|
| HP35MA | – | GX40NiCrNbTi 35-25 | – | – | – |
| CHEMICAL COMPOSITION (wt%, TYPICAL VALUES) | ||||
|---|---|---|---|---|
| C | Cr | Ni | Si | Other |
| 0.4 | 25.0 | 30.0 | 2.5 | 1.2 Nb+Ti |
| CASTINGS MINIMUM MECHANICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED) | ||||
|---|---|---|---|---|
| Rp0.2[MPa] | Rm [MPa] | A % | Hardness [HB] | Impact [J] |
| 235 | 435 | 5 | – | – |
| CREEP LIMIT | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Creep limit 1% 10.000 hours MPa at °C | Creep strength for 100.000 hours MPa at °C | ||||||||||
| 600 | 700 | 800 | 900 | 1000 | 1100 | 600 | 700 | 800 | 900 | 1000 | 1100 |
| – | 64 | 45 | 29 | 15 | 3 | – | 70 | 50 | 28 | 14 | 4 |
| PHYSICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED) | |||||
|---|---|---|---|---|---|
| Microstructure | ρ [kg/dm3] | α [μm/m∙K] (20 – 100 °C) | K [W/m∙K] | Cp [J/kg∙K] | Melting ΔT [°C] |
| Austenitic, Carbides | 8.0 | – | – | – | 1329 |
| WORKING CONDITIONS / FABRICATION | |||
|---|---|---|---|
| Heat Treatment | Max working T in air [°C] | Machinability [100 = CF8M] | Patternmaker’s Shrinkage [%] |
| As Cast | 1150 | – | 2.3 |
| APPLICATIONS/ENVIRONMENTS/DESIGN CONSIDERATIONS |
|---|
| HP35MA (Micro Alloyed) is a modified version of the traditional A297 HP alloy, where the addition of MC formers carbides such as Nb, Ti and Zr gives higher strength at higher temperatures, enhancing the creep properties of the material. The alloy is suitable for petrochemical insustry. |
APPLICATIONS/ENVIRONMENTS/DESIGN CONSIDERATIONS
HP35MA (Micro Alloyed) is a modified version of the traditional A297 HP alloy, where the addition of MC formers carbides such as Nb, Ti and Zr gives higher strength at higher temperatures, enhancing the creep properties of the material. The alloy is suitable for petrochemical insustry.
| Categoria: | Fe-Ni-Cr | |||
|---|---|---|---|---|
| ACI/CAST GRADE |
HP35MA | |||
| CAST ASTM | – | |||
| CAST EN/DIN | GX40NiCrNbTi 35-25 | |||
| CAST UNS | – | |||
| WROUGHT UNS |
– | |||
| WROUGHT GRADE |
– | |||
| CHEMICAL COMPOSITION (wt%, TYPICAL VALUES) | ||||
| C | 0.4 | |||
| Cr | 25.0 | |||
| Ni | 30.0 | |||
| Si | 2.5 | |||
| Other | 1.2 Nb+Ti | |||
| CASTINGS MINIMUM MECHANICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED) | ||||
| Rp0.2[MPa] | 235 | |||
| Rm [MPa] | 435 | |||
| A % | 5 | |||
| Hardness [HB] | – | |||
| Impact [J] | – | |||
| CREEP LIMIT | ||||
| Creep limit 1% 10.000 hours MPa at °C | ||||
| 600 | – | |||
| 700 | 64 | |||
| 800 | 45 | |||
| 900 | 29 | |||
| 1000 | 15 | |||
| 1100 | 3 | |||
| Creep strength for 100.000 hours MPa at °C | ||||
| 600 | – | |||
| 700 | 70 | |||
| 800 | 50 | |||
| 900 | 28 | |||
| 1000 | 14 | |||
| 1100 | 4 | |||
| PHYSICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED) | ||||
| Microstructure | Austenitic, Carbides | |||
| ρ [kg/dm3] | 8.0 | |||
| α [μm/m∙K] (20 – 100 °C) | – | |||
| K [W/m∙K] | – | |||
| Cp [J/kg∙K] | – | |||
| Melting ΔT [°C] | 1329 | |||
| WORKING CONDITIONS / FABRICATION | ||||
| Heat Treatment | As Cast | |||
| Max working T in air [°C] | 1150 | |||
| Machining | – | |||
| Patternmaker’s Shrinkage [%] | 2.3 | |||
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