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Materials & Plating


Inconel X-750: Age hardenable nickel chrome alloy. The endurance qualities are excellent with good fatigue resistance over the entire deflection range. This material is antimagnetic with high heat and corrosion resistance.

Inconel 718: Generally utilized in industrial applications with good strength, corrosion, and oxidation resistance at high temperatures.

Beryllium Copper: Outstanding material for Belleville Springs with strength properties comparable to steel. This material is resistant to numerous media and is good for low operating temperatures.

Phosphor Bronze: An alloy of copper and tin developed through cold working. Although strength values are lower than steel, this material is corrosion resistant and anti-magnetic.

17.4, 17.7 PH: A precipitation hardening grade of stainless. Possesses high strength, corrosion resistant, highly immune to intergranular cracking and sulphide pitting.

301, 302, 316 Series Stainless: Chromium-nickel stainless steels. Tough and ductile with trace magnetism due to cold working for strength.

410 Stainless: General utility chromium stainless steel. Ferromagnetic, air hardening, and corrosion-resistant.

1075, 1095: High carbon steel hardenable to Rockwell C40-50 (1095 Grade). Contains a high carbon content providing increased hardness in a variety of applications.

5160: Low alloy chromium steel with increased ductility. Hard wear resistant, deep hardening steel with increased elastic limit.

6150: Low alloy vanadium steel. Increased tensile strength without reducing ductility. Strong, tough, hard, and increased shock resistance.

Carpenter 455: Stainless steel with combination of cryogenic properties and high tensile strength.


We offer a variety of plating services to compliment Belleville design and performance. Please contact us for any specific plating requests or questions.

  • Mechanical Zinc
  • Electroless Nickel
  • Phosphate
  • Chromates
  • Oxide
  • Cadmium
  • Teflon Coating
  • Painting
  • Others available upon request

Key Bellevilles, Inc. 100 Key Lane Leechburg, PA 15656-9531 U. S. A. U. S. Country Code: 1

Telephone: 724 – 295 – 5111
Toll Free US&CAN: 1-800-245-3600

Fax: 724 – 295 – 2570
Toll Free US&CAN: 1-800-847-1672