TCR Engineering Services, Material Testing, Laboratory, Outsource Analytical, India
material testing
Material Testing

material testing
Material Testing Sample Size Requirements
TCR Engineering Services undertakes Mechanical Testing, Chemical Analysis, Positive Material Identification, Failure Analysis, Metallography, Corrosion Testing, Non Destructive Testing and Third party Inspection Services.

The following sample requirements will provide optimal sample size for our engineers to conduct the required tests. If your sample size does not meet the requirements listed below, please contact TCR 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. The table below is considered as a good reference point for most samples. For special items or if limited amount of material available, please contact TCR.

TYPE OF TESTING SHEET* PLATE* ANGLE BAR PIPE TUBING
  Chemical** 2"x2" 2"x2" 2" long 2" long 2" long 2" long
  Tensile 2"Wx12"L Note (1) 18" long 6" long/Note (2) Note (3) 12" long
  Flattening ---- ---- ---- ---- 3" full ring 3" full ring
  Bend Note (4) Note (4) ---- Note (4) Note (4) Note (4)
  Charpy ---- Note (5) 6" long 9" long 3" long ----
  Hardness 2"x2" 2"x2" 2"x2" 2" long 2" long 2" long

Note:
1. Plate up to " thick requires 2"Wx18"L; Plate greater than " thick requires 2"Wx6"L
2. Bar or wire under " diameter requires 18" long
3. Pipe up to " wall thickness requires 15" long; Pipe greater than " wall thickness requires 6" long
4. Requirement depends upon size and specification. We prefer ten inch length.
5. 4"W x 6"L with longitudinal direction noted with 0.1" thickness

Test Procedures Length Width Thickness Grain

Mechanical Tests

       

Tensile Test Wire

Any

*

Any

*

Microhardness using Knoop &Vickers methods

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

*

*

*

*

Chemical Analysis**

       

Spectrometer

1"

1"

1/8"

*

Atomic Absorption - 1 gram of sample

**

**

**

**

LECO Carbon, Sulfur and Nitrogen - 1 gram of sample

**

**

**

**

Optical Emission Spectroscopy (OES)

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 grain direction with an arrow on the sample.

** When performing chemical analysis only, supply the above referenced size coupon. If other testing is to be performed (i.e. tensile, flattening, etc.), a separate piece for chemical analysis is not needed.

Wet Chemical Analysis
Metals - 5 grams minimum, 10 grams preferred
Aqueous Samples - 1/2 litre minimum, 1 litre preferred
Solid Particulate Samples - coarse (> 6mm) 1 kilogram minimum, medium (1 to 5 mm) 500 grams minimum, fines (< 1 mm) 100 grams minimum

Weld Procedure Qualification
The welded test plate should be a minimum of 10 inches wide by 12 inches along the weld, 16 inches along the weld if Charpy V-Notch impacts required.

Pipe qualifications:
* over 3" nominal diameter O.D. - 1 pipe
* 2 - 3" nominal O.D. - 2 pipes
* less than 2" nominal pipe - 3 pipes
* Charpy V-Notch impacts may require more material depending on pipe size and quantity of impact tests

Chemical, Micro and IGC ASTM A262 Prac E
Rod less than 10mm dia - 150mm long
Rod more than 10mm dia - 120mm long
Plate - 50mm X 100mm
Pipe - 100 mm long

Hydrogen-Induced Cracking (HIC) Test, NACE TM0284
To conduct the HIC test, TCR Engineering Services requires the following sample sizes:

Plate - 150mm x150mm with rolling direction marked on it
If the plate is more than 80mm think - 250mm x 250 mm sample size is required

Pipe - upto 2" OD - 200mm long
If the pipe is more than 2" OD pipe - 100mm long sample size is required

Bars - Upto 3" dia - 300mm long
If the Bars are more than 3" dia to 5" dia - 200mm long sample size is required
If the Bars are more than 5" dia - 100mm long sample size is required

Number of pieces to be tested upto 88mm thick/dia - set of 3 pieces to be tested
Number of pieces to be tested more than 88mm thick/dia - 5 pieces to be tested

Time for completion - 2 weeks

Sulfide Stress Corrosion Cracking (SSCC), NACE TM0177
The SSCC tests at TCR Engineering in India are performed routinely for customers using tensile and bent beam specimens. For each stress level and temperature, the following sample sze is required:

Plate - 25mmx200mm with rolling direction marked on it
Pipe - 160 long pieces irrespective of dia
Bar - 160mm long piece irrespective of dia

Time for completion 40 working days


Material Testing Sample Size
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