Alloy Piping Products

Quality Assurance

Alloy Piping Products is commited to the highest industry standards of quality assurance. APP offers customers the following tests in our in-house quality laboratory:


Mechanical (ASTM A370 - 2020)

  • Tensile testing of sub size (1" gauge length) and standard (2" gauge length) flat and round bars. Measurements include: ultimate strength, yield strength, percent elongation, Poison's ratio, reduction of area
  • Superficial hardness testing (HRBW, HRC)
  • Charpy impact testing at temperature ranges of ambient to -50°F
  • Bar bending to 180°

Non-Destructive Testing

  • Magnetic particle examination
  • X-ray examination
  • Dye penetrant
  • Ultrasonic thickness testing
  • Ferrite scope measurement

Metallography

  • Etching for characterization of grain strucutre
  • Photo micrographs from 100x to 1000x
  • Stereoscopic analysis
  • ASTM E112 (2013) - Average grain size

Corrosion Testing

  • ASTM A262 (2015) - Standard Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels
    • Practice A - Oxalic Acid Etch Test
    • Practice B - Ferric Sulfate - Sulfuric Acid Test
    • Practice C - Nitric Acid Test
    • Practice E - Copper - Copper Sulfate - Sulfuric Acid Test
    • Practice F - Copper - Copper Sulfate - 50% Sulfuric Acid Test
  • ASTM A923 (2014) - Standard Test Methods for Detecting Detrimental Intermetallic Phase in Duplex Austenitic/Ferritic Stainless Steels
    • Method A - Sodium Hydroxide Etch
    • Method B - Charpy Impact Test (Covered in mechanical testing)
    • Method C - Ferric Chloride Corrosion Test
  • ASTM G28 (2015) - Standard Methods for Detecting Susceptibility to Intergranular Corrosion in Wrought, Nickel-Rich, Chromium-Bearing Alloys
    • Method A - Ferric Sulfate - Sulfuric Acid Test
    • Method B - Mixed Acid - Oxidizing Salt Test
  • ASTM G48 (2020) - Standard Test Methods for Pitting and Crevice Corrosion Resistance of Stainless Steels and Related Alloys by Use of Ferric Chloride Solution
    • Method A - Ferric Chloride Pitting Test
    • Method B - Ferric Chloride Crevice Test
    • Method C - Critical Pitting Temperature Test
    • Method D - Critical Crevice Temperature
    • Method E - Critical Pitting Temperature
    • Method F - Critical Crevice Temperature

Product Analysis

  • Optical Emission Spectroscopy