ASTM F688 MP35N Plate, Sheet, And Foil
Products Description
MP35N is a non-magnetic, multiphase-strengthened cobalt-nickel-chromium-molybdenum alloy. It achieves a unique combination of ultra-high strength (with tensile strength reaching over 2000 MPa) and excellent corrosion resistance through a strengthening mechanism that integrates cold-work deformation and aging treatment.
MP35N plate, sheet, and foil products are manufactured in accordance with the ASTM F688 standard. ASTM F688 is the product standard for wrought cobalt-35 nickel-20 chromium-10 molybdenum alloy (UNS R30035) intended for the manufacture of surgical implants; it specifies requirements regarding chemical composition, mechanical properties, metallography, material condition, surface and edge characteristics, and inspection.
Ordering Information
Material Name: MP35N Cobalt-Nickel-Chromium-Molybdenum Alloy
UNS Grade: UNS R30035
Product Standard: ASTM F688
Product Form: Plate, Sheet, Foil
Grain size: ASTM grain size 4 or finer, E112.
Minimum Order Quantity: 50kg
Reference Price: Reference price range is $120.00 – $280.00 USD / kg
Estimated Delivery Time: Approximately 5 working days for standard sizes in stock, and approximately 20 working days for custom sizes.
Product Specifications: Foil-Materials with a thickness less than 0.13 mm [0.005 inch].
Sheet-Materials with a thickness from 0.13 mm [0.005 inch] to 4.75 mm [0.1875 inch].
Plate-Materials with a thickness of 4.75 mm [0.1875 inch] and above.
Material Condition: Annealed, Cold-worked, Cold-worked and Capability-aged condition
Surface Condition: Types of finish available for plate are ground finish produced by surface grinding or continuous belt sanding and dull finish produced by chemical descaling.
Types of finish available for sheet and foil are dull cold rolled, bright cold rolled, intermediate polished, generalpurpose polished, dull satin-finished, high luster finish, mirror finish, or as specified in the purchase order.
Edge Condition: Rolled edge or approximate square edge produced by abrasive sawing.
Main Applications: Surgical implant manufacturing and other technically evaluated precision applications.
Surface Condition
chemical composition
|
Carbon |
0.025 |
|
Manganese |
0.15 |
|
Silicon |
0.15 |
|
Phosphorus |
0.015 |
|
Sulfur |
0.010 |
|
Chromium |
19.0-21.0 |
|
Nickel |
33.0-37.0 |
|
Molybdenum |
9.0-10.5 |
|
Iron |
1.0 |
|
Titanium |
1.0 |
|
Boron |
0.015 |
|
Cobalt |
Balance |
Data based on ASTM F688 specifications.
Mechanical Properties
| Performance indicators | Annealed | 48%Cold Worked |
| Tensile strength | min792 MPa | min 1357 MPa |
| Yield strength (0.2%) | min 310 MPa | min 1343 MPa |
| Elongation | min 45% | min 3% |
|
Rockwell Hardness
|
min 87HRB | min 43HRC |
Tensile properties of plate and sheet are tested in accordance with ASTM E8/E8M, while tensile properties of foil are tested in accordance with ASTM E345.
FAQ
Does ASTM F688 specify identical mechanical properties for all products?
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No. The standard specifies performance requirements based on product form and material condition. Tabulated requirements exist for annealed and 48% cold-worked sheet, while other product forms and processing conditions require confirmation based on the standard and agreements between the supplier and purchaser.
Does ASTM F688 specify fixed dimensions for sheet and foil?
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The standard specifies requirements regarding product form, dimensions, and tolerances; however, specific thickness, width, length, or drawing numbers must still be defined during procurement. Actual supply dimensions from LorkGroup are subject to the quotation and order confirmation.
Does MP35N sheet achieve maximum strength straight from the factory?
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Not immediately. The strength of MP35N in the annealed condition is approximately 790–930 MPa. To achieve ultra-high strength (over 1900 MPa), the material must undergo cold rolling followed by aging treatment. Material in the annealed condition does not respond to aging treatment.
What is the "LTi" version of MP35N?
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LTi (Low Titanium) is a low-titanium variant in which the titanium content is controlled below 0.015% (whereas the standard version allows up to 1.0%). The LTi version eliminates TiN inclusions and significantly improves fatigue life, making it particularly suitable for high-fatigue applications such as medical implants and precision springs.
What information is required when placing an order?
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It is recommended to provide the standard version, product form, dimensions, quantity, material condition, mechanical property requirements, surface and edge requirements, special testing requirements, and necessary documentation. This information aligns with the ordering information clauses of ASTM F688.
Lork Group
Marketing Operations Department
Email: claire@lorkgroup.com
WhatsApp: +86 19937075488
Hot Tags: MP35N, Alloy MP35N, UNS R30035, W.Nr. 2.4999, ASTM F688, ISO 5832-6, cobalt-nickel-chromium-molybdenum alloy, non-magnetic superalloy, ultra-high strength alloy, corrosion resistant foil, surgical implant material
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