Alloy Grade UNS: C95520 – Highly Flexible Alloys

  • Overview

    C955220, also known as AMS 4881, is a high-strength nickel-aluminum bronze alloy specifically engineered for demanding applications where a combination of strength, flexibility, and corrosion resistance is paramount. This alloy boasts a composition of approximately 11% aluminum, 5.1% nickel, and 4.7% iron, contributing to its impressive mechanical properties. C955220 exhibits strength comparable to steel while retaining the superior corrosion resistance characteristic of bronze alloys. Its high flexibility ensures excellent conformability and resistance to cracking under stress, while its outstanding wear and galling resistance guarantees long-lasting performance in applications involving friction and sliding contact. This unique blend of attributes makes C955220 a valuable choice for challenging environments where durability, strength, and corrosion resistance are critical.

  • Typical Uses

    Aircraft bearings, bushings, desalination components, fittings, gears, marine propulsion, pump and valve components, wear rings.

  • MetalTek Designation

    MTEK 4881

  • Poured At:

    Wisconsin Centrifugal Division

Similar Specifications

Cast UNS: C95520

Cast Grade:

Cast ASTM: B271, B505

Other Specifications: AMS 4881

Typical Chemical Composition (% by wt.)

Aluminum: 11

Carbon: n/a

Chromium: n/a

Manganese: n/a

Iron: 4.7

Copper: BAL

Nickel: 5.1

Lead: n/a

Tin: n/a

Silicon: n/a

Zinc: n/a

Minimum Mechanical Properties

Brinell 3000 KG Typical:

0

Tensile, ksi

0

Tensile, MPa

0

Yield, ksi

0

Yield, MPa

0

Elongation

0%

Frequently Asked Questions

Aluminum bronze is a copper-based alloy with aluminum as the primary alloying element, offering high strength and excellent corrosion resistance.

Common applications include marine hardware, pumps, valves, bearings, bushings, and industrial equipment exposed to seawater and corrosive environments.

Aluminum bronze provides excellent corrosion resistance, strength, wear resistance, and low friction, making it suitable for demanding environments.

Yes, it forms a protective aluminum oxide layer that provides outstanding corrosion resistance in seawater, acids, and industrial atmospheres.

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Non-Ferrous

Non-ferrous alloys are, literally, materials that are not iron-based. While others may provide non-ferrous materials of other materials, the MetalTek family of non-ferrous alloys are copper-based. In general, these materials deliver high strength, and excellent wear and corrosion resistance. They are often found in marine applications and also bushing, bearing, and gear environments.
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Stainless Steel

Stainless steels owe their ability to resist corrosion primarily to the presence of a passive film on their surface. Chromium is chiefly responsible for formation of the passive film. Iron ceases to rust at approximately 12% chromium content and resistance to oxidizing corrosives increases rapidly with chromium content up to approximately 20%.
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Specialty Alloys

Specialty Alloys comprise a broad group of materials that deliver properties for more demanding applications, use more exotic or expensive materials, or require special processes to manufacture. Where standard materials may not offer desired performance, specialty alloys (including those that are modified further) may be a sensible selection.