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Sample Size Requirements

The following sample requirements will provide optimal sample size for our technicians to conduct the required tests. If your sample size does not meet the requirements listed below, please contact QCML because subsized samples can be used or we may have other methods for conducting similar analysis. Sample sizes larger than those listed will not present a problem, but additional machining may be required.

These are optimal sample sizes for QCML, if your sample size is smaller than those listed please contact QCML for assistance.

Test Procedures Length Width Thickness Grain

MECHANICAL TESTS

Tensile Bar Round Standard

5"

*

1/2"

*

Tensile Bar Round Subsize

5"

*

1/4"

*

Tensile Bar Plate

8"

8"

1/4"

Yes

Tensile Test Wire

Any

*

Any

*

Charpy V Notch

8"

8"

0.1 "

Yes

Microhardness

(Knoop&Vickers)

1"

1"

0.030"

*

Rockwell Hardness

1"

1"

0.030"

*

Brinell Hardness

1"

1"

1/4"

*

Plating Hardness

1"

1"

0.001"

*

Plating Thickness

1"

1"

0.001"

Hydrogen Embrittlement

QCML will provide sample bars

*

*

*

*

CHEMICAL ANALYIS

Spectrometer

1"

1"

1/8"

*

ICP-OES & FLAA1 gram of sample

*

*

*

*

LECO Carbon, Sulfur Nitrogen1 gram of sample

*

*

*

*

Electron Dispersive Spectroscopy (EDS)

Any Size

*

*

*

METALLOGRAPHY

Microstructure

Any Size

*

*

*

Inclusion Rating

1/2"

1/2"

1/2"

*

Scanning Electron Microscopy (SEM)

Any Size

*

*

CORROSION TESTING

Salt spray test Panels

3"

8"

*

*
Grain direction is very important when submitting sheet or plate for testing. Always mark the grain direction with an arrow on the sample.
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