Custom Metal Bellows

Mini-Flex custom metal bellows are designed to meet our customers’ precise needs and requirements. We offer custom single or multi-ply hydroformed metal bellows built to your desired specifications. Our experienced engineers and production team will walk you through the design process to maximize cost efficiency and ensure that the highest quality standards are met. Please view our Metal Bellows Catalog to view our complete metal bellows data list, and complete our Bellows Specification Form, including your maximum and minimum requirements for each feature for engineering review.

Custom Metal Bellows Size Ranges

• 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 are measured in inches and 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 upon 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

Custom Bellows Selection Process

1. Use our Stock Bellows Data List or our new Metal Bellows Catalog selection as a guideline for our size range capabilities.
2. Reference our Metal Bellows Design Guide for column heading details and related information.
3. Complete our Bellows Specification Form, including your maximum and minimum requirements for each feature, for engineering review.