MATERIAL: Refractory alloy NC19FeNb (Inconel 718) heat treated for 37 - 47 HRC.
SURFACE TREATMENT: Dry film lubricant in accordance with EN 2491.
CLASSIFICATION: 1550 MPa (at ambient temperature) / 425 °C.
THREAD: MJ in accordance with ISO 5855-2
TOLERANCES OF FORM AND POSITION: In accordance with ISO 8788.
MARKING: EN 4012-ø-SD in accordance with EN 2424 - Category A on the area indicated on the drawing.
QUALIFICATION AND ACCEPTANCE CONDITIONS: EN 4048.
Contact Alcoa for the diameter/type in manufacturing.