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Stainless Steel 302 Shim Stock, Full Hard Temper, 2B Finish, ASTM A666, AMS 5906

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ASIN B005LE7AB2

Specifications for this item
Indentation Hardness
40-45 rockwell_c
Width Tolerance
+/-0.005  inches
Item Shape
Shim Stock
Tensile Strength Max
185000  PSI
Material Type
Stainless Steel
Brand Name
Small Parts
Length Tolerance
+1  inches
Exterior Finish
#2B Smooth
Specification Met
ASTM A666
Temper
Full Hard
Grade
302
System of Measurement
Inch

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Key Features

  • Stainless steel 302 shim stock offers excellent corrosion resistance
  • Full-hard temper provides high hardness and yield strength ratings for dimensional stability during use
  • Conforms to specifications ASTM A666, AMS 5906, and Fed. Spec. QQ-S-766
  • Rockwell hardness of C40 to C45

Product Description

The stainless steel 302 shim stock roll has a full-hard temper for dimensional stability and displays excellent corrosion resistance. It resists corrosion when in contact with fresh water and mild and oxidizing chemicals, and when exposed to mild, industrial, and marine atmospheres. Stainless steel 302 has a higher carbon content than stainless steel 304, providing the material with increased toughness and strength while still delivering good weldability and resistance to high temperatures. After shaping, the material may become magnetic. The full-hard temper provides high hardness and yield strength ratings for dimensional stability during use. This roll has a Rockwell hardness rating of C40 to C45 and conforms to American Society for Testing and Materials (ASTM) A666, SAE Aerospace Materials Standards (AMS) 5906, and Federal Specification (Fed. Spec.) QQ-S-766.

Shim stock is fabricated by cold rolling, which is the process of reducing a material’s thickness by passing it between two rollers. Cold rolling can cause a temper to form in the material, increasing the yield strength (the amount of force necessary to permanently bend or deform the material) as well as hardness ratings of the material. The higher its hardness and yield strength ratings, the more likely the shim is to preserve its thickness and shape over time while in use, but the harder it will be to bend and shape. Quarter-hard tempered material provides the lowest hardness and yield strength ratings and the greatest ductility of the tempers, with half-hard, three-quarters-hard, full-hard, spring, and blue tempered material respectively increasing in hardness and yield strength. Annealed shim stock has been heated and cooled to remove any temper and reinstate the material’s natural formability (ability to be bent) after it has been cold rolled.

Shim stock, which is sold in either sheets or rolls, is a very thin material that can be cut, sawed, stamped, milled, or bored into specific shapes. These fabricated pieces, also called shims, can be placed between objects for a variety of uses, including added support, improved leveling, increased insulation, tighter sealing, and better spacing. Shims can also be used to fill in gaps between machine parts that are prone to wear, avoiding costly replacement parts and lost production time. While most shim stock is sold in standard thicknesses of solid material, shim stock with laminated layers is composed of stacked foil sheets that have been pressed and heated together and that peel off to adjust the shim’s thickness to the application.

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