Stolk Labs has an extensive metallurgical testing lab operated by expert engineers. With our cutting-edge instrumentation, our team is able to provide in-depth analysis regarding the structure and properties of all metals and alloys. Thorough analyses through chemical, mechanical, micro/macro, destructive and non-destructive testing will determine whether or not your materials meet the required specifications to ensure durability in the intended use. Whether you are in the design phase of a product or needing a root cause failure identified, Stolk Labs can help.
Metallurgical Testing Services
Stolk Labs is PJLA ISO 17025:2017 accredited and offers many metallurgical testing services per ASTM guidelines. Some of our testing services include:
Sample Preparation Techniques:
Mount/Polish
- Standard Guide for Preparation of Metallographic Specimens – ASTM E3
Macro-etching
- Standard Practice for Macroetching Metals and Alloys – ASTM E340
Optical Techniques:
Macrophotography
Stereomicroscopy
Digital Microscopy
Scanning Electron Microscopy (SEM)
- Standard Test Method for Measurement of Thickness of Metallic Coatings by Measurement of Cross Section with a Scanning Electron Microscope – ASTM B748
Using collected Digital Images, our Metallurgists can determine/examine:
Average Grain Size
- Standard Test Methods for Determining Average Grain Size – ASTM E112
Inclusion Content
- Standard Test Methods for Determining the Inclusion Content of Steel – ASTM E45
Ferrite Count
- Steel Casting, Austenitic Alloy, Estimating Ferrite Content Thereof – ASTM A800 / A800M
- Determining Volume Fraction by Systemic Manual Point Count – ASTM E562
Intergranular Corrosion
- Standard Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels – ASTM A262
Sensitization
- Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels – ASTM A262
- Detecting Susceptibility to Intergranular Attack in Ferritic Stainless Steels – ASTM A763
Decarburization
- Estimating the Depth of Decarburization of Steel Specimens – ASTM E1077
- Determining Decarburization and Carburization in Hardened and Tempered Threaded Steel Bolts, Screws, Studs, and Nuts – ASTM F2328
Micro Examination
- Standard Guide for Preparation of Metallographic Specimens – ASTM E3
Weld/Welder Qualification
Visual Weld Inspection
- Steel Casting, Surface Acceptance Standards, Visual Examination – ASTM A802
- Investment Castings, Surface Acceptance Standards, Visual Examination – ASTM A997
Thickness Measurements
- Standard Guide for Measuring Thickness of Metallic and Inorganic Coatings – ASTM B659
Supplemental Mechanical or Chemical Tests:
Bend Test
- Bend Testing of Material for Ductility – ASTM E290
- Guided Bend Test for Ductility of Welds – ASTM E190
Tensile Tests
- Tension Testing of Metallic Materials – ASTM E8 / E8M
- Tension Testing Wrought and Cast Aluminum-and Magnesium-Alloy Products – ASTM B557
Compression Tests
Impact Tests
Hardness Tests
Rockwell
- Standard Test Methods and Definitions for Mechanical Testing of Steel Products – ASTM A370
- Standard Test Method for Rockwell Hardness of Plastics and Electrical Insulating Materials – ASTM D785
- Standard Test Methods for Rockwell Hardness of Metallic Materials – ASTM E18
Brinell
- Standard Test Method for Brinell Hardness of Metallic Materials – ASTM E10
- Standard Test Methods and Definitions for Mechanical Testing of Steel Products – ASTM A370
Knoop or Vickers Microhardness Testing
- Standard Test Method for Microindentation Hardness of Materials – ASTM E384
Depth of Penetration
Material Composition (WDS or EDS)
Wavelength Dispersive X-ray Spectroscopy (WDS)
- Standard Guide for Elemental Analysis by Wavelength Dispersive X-Ray Fluorescence Spectrometry – ASTM E1621
Energy Dispersive X-ray Spectroscopy (EDS)
- Standard Guide for Quantitative Analysis by Energy-Dispersive Spectroscopy- ASTM E1508
Optical Emission Spectroscopy (OES)
- Standard Test Method for Analysis of Aluminum and Aluminum Alloys by Spark Atomic Emission Spectrometry – ASTM E1251
- Standard Test Method for Analysis of Austenitic Stainless Steel by Spark Atomic Emission Spectrometry – ASTM E1086
- Standard Test Method for Analysis of Carbon and Low-Alloy Steel by Spark Atomic Emission Spectrometry – ASTM E415
- Standard Test Method for Analysis of Nickel Alloys by Spark Atomic Emission Spectrometry – ASTM E3047
Our analysis includes conclusions supported by scientific evidence, executive summaries, and discussions so you can move forward with business decisions, correct a supplier, or explain a quality-related failure to a customer. Don’t wait another day. Give us a call and let us help you.