| Categoria: | Fe-Cr-Ni | |||
|---|---|---|---|---|
| ACI/CAST GRADE |
HL | |||
| CAST ASTM | A297 | |||
| CAST EN/DIN | – | |||
| CAST UNS | – | |||
| WROUGHT UNS |
– | |||
| WROUGHT GRADE |
– | |||
| CHEMICAL COMPOSITION (wt%, TYPICAL VALUES) | ||||
| C | 0.40 | |||
| Cr | 30.0 | |||
| Ni | 20.0 | |||
| Si | 1.8 | |||
| Other | – | |||
| CASTINGS MINIMUM MECHANICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED) | ||||
| Rp0.2[MPa] | 240 | |||
| Rm [MPa] | 450 | |||
| A % | 10 | |||
| Hardness [HB] | – | |||
| Impact [J] | – | |||
| CREEP LIMIT | ||||
| Creep limit 1% 10.000 hours MPa at °C | ||||
| 600 | – | |||
| 700 | 58 | |||
| 800 | 36 | |||
| 900 | 19 | |||
| 1000 | 9 | |||
| 1100 | – | |||
| Creep strength for 100.000 hours MPa at °C | ||||
| 600 | – | |||
| 700 | 46 | |||
| 800 | 32 | |||
| 900 | 17 | |||
| 1000 | 6.5 | |||
| 1100 | – | |||
| PHYSICAL PROPERTIES (AT 20°C, UNLESS OTHERWISE SPECIFIED) | ||||
| Microstructure | Austenitic, Carbides | |||
| ρ [kg/dm3] | 7.72 | |||
| α [μm/m∙K] (20 – 100 °C) | 17.8 | |||
| K [W/m∙K] | 14.2 | |||
| Cp [J/kg∙K] | 502 | |||
| Melting ΔT [°C] | 1430 | |||
| WORKING CONDITIONS / FABRICATION | ||||
| Heat Treatment | As Cast | |||
| Max working T in air [°C] | 1100 | |||
| Machining | – | |||
| Patternmaker’s Shrinkage [%] | 2.3 | |||
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