GB/T 19746-2018
Corrosion of metals and alloys—Alternate immersion test in salt solution (English Version)

Standard No.

GB/T 19746-2018

Language

Chinese, Available in English version

Release Date

2018

Published By

国家市场监督管理总局、中国国家标准化管理委员会

Latest

GB/T 19746-2018

Replace

GB/T 19746-2005

Scope

This International Standard specifies a method for assessing the corrosion resistance of metals by immersion tests in saline solutions with and without applied stress. This standard applies to the quality control of metals, including aluminum alloys and steel materials, during the manufacturing process, and also applies to the evaluation during the alloy research and development process. Depending on the chemical composition of the test solution, this standard simulates the corrosive effects of seawater splash zones, deicing fluids, and acid salt environments. The term "metal" in this standard includes metallic materials with or without a corrosion protection coating. The weekly immersion test is applicable to: - metals and their alloys; - certain metal coatings (cathode and anodic coatings relative to the substrate); - certain conversion coatings; - certain anodic oxidation layers; - Organic coatings on metal surfaces.

GB/T 19746-2018 Referenced Document

• GB/T 10123 Corrosion of metals and alloys—Vocabulary*， 2022-04-15 Update
• GB/T 15970.1 Corrosion of metals and alloys.Stress corrosion testing.Part 1:General guidance on testing procedures
• GB/T 16545 Corrosion of metals and alloys.Removal of corrosion products from corrosion test specimens
• GB/T 30789.1 Paints and varnishes.Evaluation of degradation of coatings.Designation of quantity and size of defects ,and of intensity of uniform changes in appearance.Part 1:General introduction and designation system
• GB/T 30789.2 Paints and varnishes.Evaluation of degradation of coatings.Designation of quantity and size of defects,and of intensity of uniform changes in appearance.Part 2:Assessment of degree of blistering
• GB/T 30789.3 Paints and varnishes.Evaluation of degradation of coatings.Designation of quantity and size of defects,and of intensity of uniform changes in appearance.Part 3:Assessment of degree of rusting
• GB/T 30789.4 Paints and varnishes.Evaluation of degradation of coatings.Designation of quantity and size of defects,and of intensity of uniform changes in appearance.Part 4:Assessment of degree of cracking
• GB/T 30789.5 Paints and varnishes.Evaluation of degradation of coatings.Designation of quantity and size of defects, and of intensity of uniform changes in appearance.Part 5:Assessment of degree of flaking
• GB/T 30789.6 Paints and varnishes.Evaluation of degradation of coatings.Designation of quantity and size of defects,and of intensity of uniform changes in appearance.Part 6:Assessment of degree of chalking by tape method
• GB/T 30789.7 Paints and varnishes.Evaluation of degradation of coatings.Designation of quantity and size of defects, and of intensity of uniform changes in appearance.Part 7:Assessment of degree of chalking by velvet method
• GB/T 30789.8 Paints and varnishes.Evaluation of degradation of coatings.Designation of quantity and size of defects,and of intensity of uniform changes in appearance.Part 8:Assessment of degree of delamination and corrosion around a scribe or other artificial defect
• GB/T 30789.9 Paints and varnishes.Evaluation of degradation of coatings.Designation of quantity and size of defects, and of intensity of uniform changes in appearance.Part 9:Assessment of degree of filiform corrosion
• GB/T 6461 Methods for corrosion testing of metallic and other inorganic coatings on metallic substrates--Rating of test specimens and manufactured articles subjected to corrosion tests

GB/T 19746-2018 history

• 2018 GB/T 19746-2018 Corrosion of metals and alloys—Alternate immersion test in salt solution
• 2005 GB/T 19746-2005 Corrosion of metals and alloys.Alternate immersion test in salt solution