805-644-1474 info@mini-flex.com

Metal Bellows

With over 50 years of experience, Mini-Flex has been recognized as an industry leader in the production of high quality metal bellows and metal bellows assemblies. We offer a wide range of stock bellows, with over 200 unique stock bellows and 1000s of overruns available for immediate delivery. Mini-Flex’s custom made single or multi-ply hydroformed metal bellows are designed by our experienced engineers to meet your desired specifications.

Bellows Size Ranges (inches)

  • Inside Diameter (ID): 0.070 to 1.000
  • Outside Diameter (OD): 0.130 to 1.700
  • Convolution Length: 0.015 to 3.000
  • Wall Thickness: 0.0015 to 0.028

Note: the above dimensions vary by application and diameter

Metal Bellows Materials

Seamless tubing is used to form the majority of bellows manufactured by Mini-Flex, resulting in the highest quality product available. Welded and drawn tubing or welded tubing is also available by request. The ultimate tensile strength (UTS) and yield tensile strength (YTS) ratio, elongation, wall thickness and convolution ID/OD ratio must be considered in material selection. Typical metal bellows materials include but are not limited to the following.

  • Stainless Steel type 304, 304L, 316, 316L, 321, 347
  • Inconel Alloys type 600, 625, 718, x-750
  • Nickel 200, Ni-Span C-902, Hastelloy X, Monel 400 and 404
  • Beryllium Copper C17200, Phosphor Bronze C52100, Brass 70-30
  • Aluminum 6061 and many other exotic alloys including Titanium, Columbium 1% Zirconium, and Haynes 25

Metal Bellows Selection

  1. Use our Bellows Data List “stainless steel” selection as a guideline to our size range capabilities.
  2. Reference our Metal Bellows Design Guide for column heading details and related information.

Industries Served

  • Aerospace
  • Automotive
  • Chemical
  • Cryogenic
  • Defense
  • Energy
  • Gas
  • Oil
  • Industrial
  • Medical
  • Nuclear
  • Semiconductor

Get Started!

Select a bellows from the Bellows Data List or complete the Bellows Specification Form. For assistance contact our sales department at (805) 644-1474.