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  2. Pitting resistance equivalent number - Wikipedia

    en.wikipedia.org/wiki/Pitting_Resistance...

    Pitting resistance equivalent number (PREN) is a predictive measurement of a stainless steel's resistance to localized pitting corrosion based on its chemical composition. In general: the higher PREN-value, the more resistant is the stainless steel to localized pitting corrosion by chloride.

  3. Corrosion monitoring - Wikipedia

    en.wikipedia.org/wiki/Corrosion_monitoring

    Corrosion monitoring is the use of a corrator (corrosion meter) or set of methods [1] and equipment to provide offline or online information about corrosion rate expressed in mpy (mill per year). [ 2 ] - for better care and to take or improve preventive measures to combat and protect against corrosion .

  4. ASTM A500 - Wikipedia

    en.wikipedia.org/wiki/ASTM_A500

    ASTM A500 is a standard specification published by the ASTM for cold-formed welded and seamless carbon steel structural tubing in round, square, and rectangular shapes. It is commonly specified in the US for hollow structural sections, but the more stringent CSA G40.21 is preferred in Canada.

  5. Pitting corrosion - Wikipedia

    en.wikipedia.org/wiki/Pitting_corrosion

    The vapors originated from a leak of gasoline through a single hole formed by corrosion between a steel gasoline pipe and a zinc-plated water pipe. [20] Firearms can also suffer from pitting, most notably in the bore of the barrel when corrosive ammunition is used and the barrel is not cleaned soon afterwards. [21]

  6. Salt spray test - Wikipedia

    en.wikipedia.org/wiki/Salt_spray_test

    The salt spray test (or salt fog test) is a standardized and popular corrosion test method, used to check corrosion resistance of materials and surface coatings.Usually, the materials to be tested are metallic (although stone, ceramics, and polymers may also be tested) and finished with a surface coating which is intended to provide a degree of corrosion protection to the underlying metal.

  7. Nominal Pipe Size - Wikipedia

    en.wikipedia.org/wiki/Nominal_Pipe_Size

    Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. [1] " Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside ...

  8. Corrosion engineering - Wikipedia

    en.wikipedia.org/wiki/Corrosion_engineering

    Stress-Corrosion-Cracking-Quench-Pipe-1.4541-01. Stress corrosion cracking (SCC) is the growth of a crack in a corrosive environment. [53] It requires three conditions to take place: 1)corrosive environment 2)stress 3)susceptible material. SCC can lead to unexpected sudden and hence catastrophic failure of normally ductile metals under tensile ...

  9. HAZMAT Class 8 Corrosive substances - Wikipedia

    en.wikipedia.org/wiki/HAZMAT_Class_8_Corrosive...

    A corrosive material is a liquid or solid that causes full thickness destruction of human skin at the site of contact within a specified period of time. A liquid that has a severe corrosion rate on steel or aluminum based on the criteria in 49CFR 173.137(c)(2) is also a corrosive material.

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