ZYTC Alloy is an ISO 9001 and AS 9120B certified superalloy manufacturer and supplier, offering AMS 5841 MP159 bar at factory-direct prices with full material traceability and fast global delivery. AMS 5841 specification covers a high-strength, corrosion- and heat-resistant cobalt-chromium-nickel alloy (MP159 / UNS R30159) in the form of bars. MP159 is a nickel-cobalt-based multiphase alloy that achieves ultra-high strength through work strengthening and aging. This combination of properties enables ultra-high strength, toughness, good ductility, and excellent corrosion resistance. MP159 is used across many industries, including prosthetic devices, jet engine components, fasteners, marine applications, and petroleum industry applications.
Specifications & AvailableMP159 is a multiphase superalloy strengthened by a combination of cold work and aging. The alloy is supplied in the solution heat-treated condition, which provides a soft, workable state prior to cold working and aging. The solution heat treatment is performed at 1038-1052°C (1900-1925°F) for 4-8 hours followed by water quenching. Available Forms: Round bar Specifications: AMS 5841 (solution heat treated), AMS 5842, AMS 5843, UNS R30159, NACE MR0175/ISO 15156
Contact Us 📧 Email: daisy@zytcsteel.com
📲 WhatsApp: +86 17335753350
Chemical Composition – MP159 (UNS R30159) per AMS 5841| Element | Nominal Composition (%) |
|---|
| Cobalt (Co) | 36.0 | | Nickel (Ni) | 25.0 | | Chromium (Cr) | 19.0 | | Molybdenum (Mo) | 7.0 | | Iron (Fe) | 9.0 | | Titanium (Ti) | 2.9 | | Niobium (Cb/Nb) | 0.50 | | Aluminum (Al) | 0.20 | | Carbon (C) | 0.04 max | | Manganese (Mn) | 0.20 max | | Silicon (Si) | 0.20 max | | Phosphorus (P) | 0.015 max | | Sulfur (S) | 0.010 max | | Boron (B) | 0.010 max |
Mechanical Properties – MP159 BarSolution Heat Treated Condition (As Supplied – For Work Strengthening)| Property | Typical Value |
|---|
| Tensile Strength | 125 – 145 ksi (862 – 1000 MPa) | | Yield Strength (0.2% offset) | 60 – 80 ksi (414 – 552 MPa) | | Elongation | 45 – 60% | | Hardness (Rockwell C) | 25 – 35 HRC |
Work Strengthened + Aged Condition (Final Properties)| Property | Typical Value | Requirement |
|---|
| Ultimate Tensile Strength | 185 – 215 ksi (1275 – 1482 MPa) | 1830 MPa (265 ksi) minimum | | Yield Strength (0.2% offset) | 160 – 190 ksi (1103 – 1310 MPa) | – | | Elongation | 8 – 15% | – | | Reduction of Area | 20 – 35% | – | | Hardness (Rockwell C) | 40 – 48 HRC | – |
General Properties| Property | Value |
|---|
| Density | 0.303 lb/in³ (8.39 g/cm³) | | Modulus of Elasticity | 31.0 x 10³ ksi (214 GPa) |
Ultra-High Strength – Key AdvantageThrough work strengthening and aging, MP159 alloy exhibits ultimate tensile strength levels in excess of 1830 MPa (265 ksi) . | Condition | UTS (MPa) | UTS (ksi) | Applications |
|---|
| Solution Heat Treated | 862 – 1000 MPa | 125 – 145 ksi | Forming, machining | | Work Strengthened + Aged | >1830 MPa | >265 ksi | Final service |
This makes MP159 one of the strongest commercially available corrosion-resistant alloys.
Heat Treatment – MP159 Bar (AMS 5841)Solution Heat Treatment (As Supplied)| Parameter | Value |
|---|
| Temperature | 1900°F – 1925°F (1038 – 1052°C) | | Duration | 4 – 8 hours | | Cooling | Water quench | | Purpose | Prepare for work strengthening |
Processing Sequence for Final Properties| Step | Process | Purpose |
|---|
| 1 | Solution Heat Treat (1900-1925°F / 4-8 hr / water quench) | Soft, workable condition | | 2 | Work Strengthening (Cold work: 45-55% reduction) | Increase strength | | 3 | Aging (Time-temperature cycle) | Develop ultra-high strength |
Typical Aging Cycle| Parameter | Value |
|---|
| Temperature | 1100 – 1200°F (593 – 649°C) | | Duration | 4 – 8 hours | | Cooling | Air cool |
ApplicationsAerospace: High-strength fasteners (bolts, studs), jet engine components, landing gear hardware, drive systems Oil & Gas: Downhole tools, wellhead components, valve stems, packers, completion equipment (NACE MR0175 approved for sour service) Marine: Subsea connectors, seawater handling components, propeller shafts Medical: Prosthetic devices, orthopedic implants, surgical instruments Industrial: High-strength springs, torsion bars, fasteners for corrosive environments
Factory Price – AMS 5841 MP159 Bar (UNS R30159)Indicative factory pricing (FOB China): | Diameter Range | Form | Condition | Price (USD/kg) |
|---|
| Φ3mm – 25mm | Round Bar | Solution heat treated | 120–120–250 | | Φ25mm – 50mm | Round Bar | Solution heat treated | 110–110–220 | | Φ50mm – 100mm | Round Bar | Solution heat treated | 100–100–200 | | Φ100mm – 150mm | Round Bar | Solution heat treated | 95–95–180 |
Work Strengthened + Aged Condition: Add 15 – 25% to base price (processing dependent). Volume discounts available for orders above 200 kg. Custom sizes, cold work percentages, and aging treatments available – contact us for a firm quote.
Delivery Lead Times (after pre-payment confirmation)| Stock Status | Delivery Time |
|---|
| Products in stock | Within 3 days | | Raw material in stock | Within 10 days | | Re-melting required | 15 – 25 days |
For inquiries, technical datasheets, or a competitive quote, contact our sales team. We are ready to support your project with certified AMS 5841 MP159 bar for ultra-high-strength aerospace, medical, and oil & gas applications. Contact Us 📧 Email: daisy@zytcsteel.com
📲 WhatsApp: +86 17335753350 |
