Edelstahl 17-4PH
Edelstahl mit Cr-Ni-Cu, ausscheidungsgehärtet, mit nachgewiesener Korrosionsbeständigkeit in härtesten Situationen, ähnlich der des Stahls Serie 304.
Durch die Möglichkeit, die mechanischen Eigenschaften durch eine angemessene Wärmebehandlung verändern zu können, ist die Marke mit Martensitstahl vergleichbar.
Für Anwendungen in hochkorrosiven Umgebungen. Für die Petrochemie-, Motor-, Öl&Gasindustrie, für die Herstellung von Ventilen.
Verarbeitungen der Feinmechanik MIRA für Edelstahl 17-4 PH bei CNC-Fräsen, Draht-Elektroerosion und CNC-Drehen oder alternativ bei der Herstellung von Prototypen mit DMLS-Sintern.
Dichte: 7,80 g /cm³
Technische Daten des Materials und physikalische und chemische Eigenschaften
| Technical Data | Test Method | |
| Typical achievable part accuracy, small parts | - - - - - - - | approx. ±20-50 μm |
| Typical achievable part accuracy, large parts [1] | - - - - - - - | approx. ± 0.2 % |
| Min. wall thickness [2] | - - - - - - - | approx. 0.3 - 0.4 mm |
| Surface roughness[2] after shot-peening | - - - - - - - |
Ra 2.5 - 4.5 μm Ry 15 - 40 μm |
| Surface roughness after polishing | - - - - - - - | Rz up to < 0,5 μm |
| Physical and Chemical properties of parts | Test Method | |
| Material composition steel including alloying elements | - - - - - - - |
Cr (15 – 17.5 wt-%) Ni (3 - 5 wt-%) Cu (3 - 5 wt-%) Mn (max. 1 wt-%) Si (max. 1 wt-%) Mo (max. 0.5 wt-%) Nb (0.15 - 0.45 wt-%) C (max. 0.07 wt-%) |
| Relative density with standard parameters | - - - - - - - | approx. 100 % |
| Density with standard parameters | - - - - - - - |
min. 7.8 g/cm3 |
| Mechanical properties of parts [3] | Test Method | As Manufactured | Stress relieved (1 hour at 650 °C) |
| Ultimate tensile strength in horizontal direction (XY) | ISO 6892:1998(E) Annex C |
min 850 MPa (123 ksi) typical 930 ± 50 MPa (135 ± 7 ksi) |
typical 1100 MPa (160 ksi) |
| Ultimate tensile strength in vertical direction (Z) | ISO 6892:1998(E) Annex C |
min 850 MPa (123 ksi) typical 960 ± 50 MPa (139 ± 7 ksi) |
typical 980 MPa (142 ksi) |
| Yield strength, ReL, Lower yield strength) in horizontal direction (XY) | ISO 6892:1998(E) Annex C |
min 530 MPa (77 ksi) typical 586 ± 50 MPa (85 ± 7 ksi) |
typical 590 Mpa (86 ksi) |
| Yield strength, ReL, Lower yield strength) in vertical direction (Z) | ISO 6892:1998(E) Annex C |
min 530 MPa (77 ksi) typical 570 ± 50 MPa (83 ± 7 ksi) |
typical 550 MPa (80 ksi) |
| Yield strength, ReH, Upper yield strength) in horizontal direction (XY) | ISO 6892:1998(E) Annex C |
min 595 MPa (86 ksi) typical 645 ± 50 MPa (94 ± 7 ksi) |
typical 634 MPa (92 ksi) |
| Yield strength, ReH, Upper yield strength) in vertical direction (Z) | ISO 6892:1998(E) Annex C |
min 580 MPa (84 ksi) typical 630 ± 50 MPa (91 ± 7 ksi) |
typical 595 MPa (86 ksi) |
| Young’s modulus | ISO 6892:1998(E) Annex C | 170 ± 30 | typical 180 GPa |
| Elongation at break in horizontal direction (XY) | ISO 6892:1998(E) Annex C |
min 25 % typical 31 ± 5 % | typical 29 % |
| Elongation at break in vertical direction (Z) | ISO 6892:1998(E) Annex C | min 25 % typical 35 ± 5 % | typical 31 % |
| Hardness [4] as built | ISO 6892:1998(E) Annex C | approx. 230 ± 20 HV1 | - - - - - - - |
| Hardness [4] ground and polished [5] | ISO 6892:1998(E) Annex C | approx. 250 - 400 HV1 | - - - - - - - |
| Thermal properties of parts | Test Method | |
| Coefficient of thermal expansion over 20-600°C (68-1080 °F) | - - - - - - - | 14 x 10-6 m/m °C |
| Thermal conductivity at 20 °C (68 °F) | - - - - - - - | 13 W/m °C |
| Thermal conductivity at 100 °C (212 °F) | - - - - - - - | 14 W/m °C |
| Thermal conductivity at 200 °C (392 °F) | - - - - - - - | 15 W/m °C |
| Thermal conductivity at 300 °C (572 °F) | - - - - - - - | 16 W/m °C |
| Maximum operating temperature | - - - - - - - | 550 °C (1022 °F) |