304 Stainless Steel Verification Standard

Part # AFCTC05S3C


 

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Why 304 Stainless Steel?

 

AASHTO T 336:

AASHTO T 336 requires a verification standard composed of essentially linearly elastic, non-corroding, non-oxidizing, nonporous, and nonmagnetic material with a coefficient of thermal expansion that is at least 5 µ-strains /°C different from that of the calibration standard.

 

The Titanium Calibration Standard:

The Titanium calibration standard has a coefficient of thermal expansion of approximately 9.2 µ-strains /°C.

 

The 304 Stainless Steel Verification Standard:

304 Stainless Steel has a coefficient of thermal expansion of about 16.1 µ-strains /°C.

 

The Difference:

The difference between the coefficients for Titanium and Stainless Steel is 6.9 µ-strains /°C, which meets the requirement of T 336.