Design of Jigs & Fixtures/Material Used in Jig and Fixture

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Jig and fixtures are made from a variety of the materials. There are times where the metals are hardened to resist wear and tear. Sometimes, to prevent damage to workpieces, they are made from nylon/fibre

Below are some of the materials used:

Material Description
Mild Steel Contains carbon (<0.3%). Most suitable for most jigs applications as it is the most economical and most widely used material in jigs and fixtures.
Carbon Steel Contains carbon (0.85%~1.18%). Most suitable for workpieces like woodworking tools and hand tools such as files and chisels. It can be hardened to serve as locators and bushings.
High Speed Steel Contains tungsten (18% ~22%) for toughness and cutting strength, chromium (4.3%) for hardening and wear resistance, vanadium (1%) for retention of hardness at high temperature. Most suitable for cutting tools like drills, reamers and cutters.
High Tensile Steel Contains carbon (0.45% ~ 0.65%) and alloys Ni2Cr1M028 (40%). Most suitable for fasteners as well as high-stress machines such as ram presses.
Die Steel Contains carbon (1.5%~2.3) for hardness, high chromium (12%) but alloyed with molybdenum (1%) and vanadium (0.3%~1%) for hardness retention used at high temperatures. Most suitable for forging, casting and extrusion.
Oil Hardening Non-Shrinking Tool Steels Contain carbon (0.9%~1.1%), tungsten(0.5%~2%) and carbon (0.45%~1%). Most suitable for engraving tools and intricate pressing jigs.
Cast Irons Contain carbon (2%~2.5%). Most suitable for miling fixtures, machine slides and guide ways, as they can withstand extreme vibrations.
Nylons & Fibres Most suitable for use in soft linings for lever presses/clamps to prevent dents to workpieces under high-pressure forces.
Phosphor Bronze Most suitable in corrosion-resistant parts such as boiler valves