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Alloy MP159 (AMS 5841)

Technical Data Sheet

MP159 is a Nickel-Cobalt based multiphase alloy. This combination of properties enables ultra high strength, toughness, good ductility and excellent corrosion resistance. Through work strengthening and aging MP159 alloy exhibits ultimate tensile strength levels in excess of 1830 MPa. MP159 is used in many different industries from use in prosthetic devices, jet engine components, fasteners, marine applications to petroleum industry applications.

Chemical Composition Limits
Weight %	Ni	Co	Cr	Fe	Mo	Ti	Cb	Al
MP159	25.5	35.7	19.0	9.0	7.0	3.0	0.6	0.2

Typical Mechanical Properties

Material	Condtion	Tensile Strength ksi	Yield Strength ksi	Elongation %	Reduction of Area %	Hardness HRC
MP159	Annealed	123	58	60	69
MP159	AMS 5841	160 max	70 max	50	65	20 HRC max
MP159	Annealed, Cold Worked 48%	230	205	12	46
MP159	AMS 5842	-	-	-	-	≥38HRC
MP159	Annealed, Cold Worked + Aged	275	265	8	35
MP159	AMS 5843	260 min	250 min	6 min	20 min	≥44HRC

Availability
Alloy MP159 is available in Bar (Round). For all stock availability contact Sales.

Specifications
UNS R30159

AMS 5841 Bar (Solution Heat Treated)
Solution Heat Treat: 1900°F - 1925°F / 4-8 hours + Water Quench

AMS 5842 Bar (Solution Heat Treated and Work Strengthened)
Solution Heat Treat: 1900°F - 1925°F / 4-8 hours + Water Quench
Followed by work strengthened / strain hardening

AMS 5843 Bar (Solution Heat Treated, Work Strengthened and Aged)
Solution Heat Treat: 1900°F - 1925°F / 4-8 hours + Water Quench
Followed by work strengthened / strain hardening
Ffollowed by ageing: 1200-1250°F 4-4.5 hours + Air Cool.

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Disclaimer
Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.