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Complex Nitinol Components
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Complex Nitinol Components
from Melt to Market

Complex Nitinol Components
from Melt to Market

Complex Nitinol Components
from Melt to Market

Complex Nitinol Components
from Melt to Market

Complex Nitinol Components
from Melt to Market

Complex Nitinol Components
from Melt to Market

Complex Nitinol Components
from Melt to Market

Complex Nitinol Components
from Melt to Market

Nitinol Components

Memry Corporation is a global market and technology leader in Nitinol components. We provide Nitinol melting and materials, a complete range of Nitinol fabrication and finishing, and engineer-to-engineer support in both prototyping and production phases. With melt to market® capabilities under one company roof, medical device customers benefit from precise control, predictability, transparency, a streamlined production process and a platform for collaborative innovation.

Markets

Memry is a world leader in medical and industrial applications requiring Nitinol alloys and complex manufacturing processes. With decades of steadily increasing competency in Nitinol metallurgy, we are the ideal partner for developing advanced materials and components.
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  • Interventional cardiology, endovascular surgery and interventional neuroradiology
    • AAA stent grafts, PTCA catheter shafts, peripheral stent tubing and interventional delivery systems
  • Cardiovascular surgery, general surgery and laparoscopic surgery
    • Valve sizers, Heart Valves, tissue retractors and hand-held instrument components
  • Sports medicine and spinal surgery
    • Bone staples, suture retrievers, k-wires and tissue anchor delivery systems
  • Urology, gastrointestinal, otolaryngology and endoscopy
    • Snares, graspers, esophageal stents and sinus implants
  • Dental
    • Arch wires, orthodontic clips and endodontic files
Industrial markets

Nitinol and other advanced alloys are used in a wide variety industries, including aerospace, automotive, and defense., Many of these applications involve actuation via the thermal shape memory effect of the material.

Memry’s major industrial markets & applications
  • Aerospace
    • Locking rings, actuators and connectors for electronic and safety devices
  • Automotive
    • Sealing plugs and locking rings
  • Defense
    • Specialty antennas, wire, harness & cable
Our parent company, SAES Group, is a world leading supplier and manufacturer of Shape Memory actuators used in many industrial applications. They offer a highly diversified product portfolio of trained wires, springs and components that are used to satisfy the most unique applications.

Nitinol Materials

Memry is a world leader in medical and industrial applications requiring Nitinol alloys and complex manufacturing processes. With decades of steadily increasing competency in Nitinol metallurgy, we are the ideal partner for developing advanced Mill Products and Semi-finished Raw Materials.

Nitinol Alloys & Purities

Memry has an unparalleled history and scale in the Nitinol industry, starting in 1966 as the first commercial supplier of Nitinol to the Naval Ordinance Lab, which is where the “NOL” in NiTiNOL originated. The VIM + VAR nitinol melting process was established in 1990 through extensive superalloy experience to provide premium, repeatable quality by combining the advantages of VIM (homogeneity) and VAR (structure). This mature process continues today, outputting several hundred thousand pounds of clean, consistent material every year. Binary alloy formulations as well as ternary, quaternary and beyond are melted via this process, tailored to the users specific needs in heat sizes from 30 to 4000 pounds.

Alloys

We melt and produce Nitinol alloys in all common binary and ternary formulations. Custom formulations in binary, ternary, quaternary and beyond can be produced upon request. The table below depicts the most common Nitinol alloys:
Memry Alloy ChartDownload Alloy Chart

Purities

The presence of non-metallic inclusions and porosity is how the industry measures Nitinol microcleanliness. Typical non-metallic inclusions are carbides (TiC), and intermetallic oxides (Ti4Ni2Ox).

The size and distribution of these inclusions play a critical role for device designers who work with Nitinol.  The size and area fraction of inclusions are precisely sampled and measured as detailed here. This is an important consideration for medical and industrial high fatigue applications, but also for miniaturized products where inclusion size must be contained due to extremely fine structures.

While SAES standard purity Nitinol is suitable for most Nitinol devices, SAES offers two cleaner options in response to our customers’ needs for higher performance applications.

Redox is a second-generation material based on our standard Nitinol melting practice but carefully modified and controlled to limit oxide inclusion formation. Redox has been relied on by customers for over a decade.

SAES’s cleanest offering, Enduro, is a third-generation material melted and processed using proprietary technology to deliver exceptional inclusion control that delivers maximum life in extreme applications. The table below shows ASTM allowable inclusion limits along with specifications for our standard, Redox and Enduro materials:
The table below shows comparative features of Standard, Redox and Enduro materials:
Standard, Redox, and Enduro Nitinol Features
The histogram below demonstrates the differences between Standard and Enduro inclusions - showing a dramatic decrease in relatively large inclusions, leading to significantly improved fatigue life:
Histogram showing differences between Standard and Enduro inclusionsDownload Enduro PDF

Resources & Education

Nitinol IQ

Introduction to Nitinol

Nitinol Glossary

Our Company

Memry Corporation is a global market and technology leader in Nitinol. We provide Nitinol melting, complex components and materials, a complete range of Nitinol fabrication and finishing, and engineer-to-engineer support in both prototyping and production phases. With melt to market® capabilities under one company roof, medical device customers benefit from precise control, predictability, transparency, a streamlined and convenient production process, and a platform for collaborative innovation with a rich 70 year history.

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