MP35N / Alloy 35N vs Stellite 6: 5% composition overlap. Significantly different materials serving different application areas.
MP35N / Alloy 35N vs Stellite 6
Side-by-side chemical composition and mechanical property comparison.
Overview
MP35N / Alloy 35N
2.4999
Cobalt-nickel-chromium-molybdenum alloy (35Co-35Ni-20Cr-10Mo) with ultrahigh strength achievable by cold work + aging. Annealed: Rm ~860 MPa, Rp0.2 ~380 MPa. Cold worked + aged: Rm up to 1900 MPa, Rp0.2 up to 1725 MPa. Non-magnetic, excellent corrosion resistance (comparable to Hastelloy C), biocompatible. Density 8.43 g/cm³. UNS R30035, AMS 5758/5844. Applications: medical implants (cardiac pacing leads, orthopedic devices), aerospace fasteners, subsea connectors, springs, dental wire.
Stellite 6
R30006
The world's most widely used cobalt-based wear-resistant alloy. CoCrW matrix with hard chromium carbides (M7C3) provides exceptional resistance to abrasion, erosion, cavitation, galling, and corrosion across a wide temperature range. Retains hardness up to 500°C. Non-magnetic. Industry standard for general-purpose wear resistance — suitable for hardfacing (PTA, laser, TIG), casting, and powder metallurgy. Used for valve seats, pump sleeves, bearing surfaces, cutting tools, hot-forming dies, and turbine blade erosion shields.
| MP35N / Alloy 35N | Stellite 6 | |
|---|---|---|
| Material Number | 2.4999 | R30006 |
| Category | cobalt | cobalt |
| Standard | AMS 5758 / ASTM F562 | AMS 5894 |
Chemical composition (wt%)
| Element | MP35N / Alloy 35N | Stellite 6 | Overlap |
|---|---|---|---|
| C | ≤ 0.025% | 0.9–1.4% | No overlap |
| Si | ≤ 0.15% | ≤ 1.5% | OK |
| Mn | ≤ 0.15% | ≤ 1% | OK |
| Cr | 19–21% | 26–32% | No overlap |
Mechanical properties
| Property | MP35N / Alloy 35N | Stellite 6 | Unit |
|---|---|---|---|
| tensile_strength | ≥ 860 | ≥ 896 | MPa |
| yield_strength | ≥ 380 | — | MPa |
| elongation | ≥ 50 | — | % |
Compatibility Assessment
MP35N / Alloy 35N and Stellite 6 have significantly different compositions (5% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is MP35N / Alloy 35N the same as Stellite 6?
MP35N / Alloy 35N and Stellite 6 have a 5% composition overlap. They are generally not directly interchangeable.
Can I replace MP35N / Alloy 35N with Stellite 6?
Generally not recommended. The compositions differ significantly (5% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between MP35N / Alloy 35N and Stellite 6?
The main differences are in the following elements: C, Cr, Mo, Ni. MP35N / Alloy 35N is a cobalt grade, while Stellite 6 is a cobalt grade.
View full data for each material:
Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.