IST INDIA
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Mobile: 9831019756 Email: amitban@cal2.vsnl.net.in
Contact: Amit Banerjee


 

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Spring Material Selection

Providing considerable information about the properties of spring materials and the logic behind the criteria for their selection to ensure suitability for an intended purpose.

Suited both to newcomers into the spring industry and those seeking a ‘refresher’ that will help them to make optimum selection of spring materials.  The course is also valuable to material suppliers enabling them to advise their customers about correct material selection for specific applications.  Some important aspects of basic metallurgy will be covered in the course, since this will assist with a more complete understanding of the principles of spring materials selection.

Drawing heavily upon our in-house data bank of information on spring materials and their properties, as well as our knowledge of the development of spring materials around the world.

Covering all the common spring materials together with some of the more specialised “exotic” grades, providing information on chemical composition, static and dynamic performance, heat treatment requirements and other properties appropriate to spring applications.

 

General Properties of Spring Materials
Hookes law
Strength & elastic limit
Tensile test demonstration
Resistance to
- relaxation
- fatigue
- corrosion

Introduction to IST ’s Spring Materials Database
Wire, Strip and Bar Spring Materials

Basic Ferrous Metallurgy
Fe-C & TTT diagrams
Cold work
Heat treatment

Optical Metalography Demonstration
Showing the appearance of pearlite, bainite, tempered martensite and drawn austenitic microstructures and some of the faults that may occur

Material Selection for Static Applications
Safe design stresses
Moduli, E and G
Prestressing
Formability and bend radii

Coilability
Fracmat for wire, Dynacon for strip 		Springmaking Processes and Residaul Stresses
Coiling / bending
Stress relief
Grinding
Shot peening
Prestressing

Material Selection for long term or high temperature applications
Relaxation

Material Selection for dynamic applications
Fatigue

Material Selection for springs in corrosive conditions
Theory
Practice – salt spray, humidity testing, corrosion protection vs selection of corrosion resistant materials

Special Properties
Electrical, constant modulus, density

Spring Materials and their Specifications
Carbon steels
Low alloy steels
Stainless steels
Copper alloys
Nickel alloys
Titanium alloys
Newly developed materials

Information needed to select the optimum spring material

Practical exercises in material selection
Use of specifications