MP35N™ – NACE

• Applications

  MP35N™ – NACE material is ideally suited for oil field equipment such as:

  • fasteners
  • springs
  • non-magnetic electrical components
  • instrument parts
  • valve components
  • high pressure door fittings
  • actuators
  • seals
  • shafts and other components

• Melting

  MP35N™ is produced by vacuum induction melting followed by VAC-ARC remelting to provide
  exceptional control of chemistry and ingot solidification.

  MP35N™ has a face centred cubic structure matrix of cobalt and nickel, in which chromium and molybdenum
  are soluble at elevated temperatures. The fcc structure persists upon cooling to room temperature and below.
  Thereafter the combination of cold work and ageing temperature determines that the maximum CRA
  properties are achieved.

  ASTM Grain size is 4 or finer.

  We hold stock from 12.7 mm (1/2”) to 76.2 mm (3”), material can also be supplied as cold drawn tubing on a
  lead-time.

  Diameter tolerance +/- 0.003” (0.076mm). Density 8.43 h/cm3.

  Other variants available include AMS 5844 (solution treated and cold drawn) and AMS 5845 (solution treated, cold drawn and aged) – see separate data sheet.

• Heat Treatment & Weldability

  Solution Treatment
  Temperature:  1038-1052℃, Time: 4-8 hours, Cooling: Air

  Ageing Options NACE MR 0175
  Temperature:  704℃, Time: 4 hours, Cooling: Air

  Ageing Options NACE MR 0175
  Temperature:  732℃, Time: 4 hours, Cooling: Air

  Ageing Options NACE MR 0175
  Temperature:  774℃, Time: 6 hours, Cooling: Air

   

• Chemical Composition

  Weight %	Ni	Co	Cr	C	Si	Mn	S	Mo	P	Fe	Ti	B
  Min.	33,0	Bal.	19,0					9,0
  Max.	37,0	Bal.	21,0	0,025	0,15	0,15	0,01	10,5	0,015	1,0	1,0	0,15

   

• Mechanical Properties (Specific for Bars)

  Acc to NACE MR 0175	Yield strength Rp0.2, MPa	Tensile strength Rm, MPa	Elongation [%]	RA %	HRC [max]
  Age 704℃ / Time 4 hours	1448	1517	10	40	51
  Age 732℃ / Time 4 hours	1379	1448	10	40	51
  Age 774℃ / Time 6 hours	1241	1310	10	40	51

  Values are not provided for 788℃ / 4 hours. The above are only guaranteed up to 2” dia.

  Mechanical Tests are conducted at room temperature in accordance with ASTM E8; hardness in accordance with ASTM E18; Macrotech in accordance with ASTM A604; Grain Size in accordance with ASTM E112.

  Shear strength: bar sizes up to 1” (25.4 mm) diameter can be guaranteed to a minimum shear strength of 1034 MPa. Bar sizes of a diameter larger than 1” are considered capable of meeting the 1034 MPa minimum shear strength value, but this is not guaranteed.

Stocked Products and Dimensions

• Bar

  We hold stock from 12.7 mm (1/2”) to 76.2 mm (3”). The material can also be supplied as cold drawn tubing on a lead-time.

  Diameter tolerance +/- 0.003” (0.076mm). Density 8.43 h/cm3.

  Other variants available include AMS 5844 (solution treated and cold drawn) and AMS 5845 (solution treated, cold drawn and aged) – see separate data sheet.

  Available from UK stock.