What are the metal material testing items? According to the editor's understanding、 the testing items can be divided into two main parts. The first part is internal quality inspection、 which mainly tests the mechanical properties、 chemical composition、 metallography、 anti-corrosion、 non-destructive、 size、 welding、 and other aspects of the product. The main testing standards can be based on North American、 ISO international、 Chinese、 European、 German、 Japanese、 and other standards. The other part is used for production、 ordering、 transportation、 use、 storage、 and inspection、 This part must be based on unified technical standards (GB、 YB、 JB). Below is a specific introduction to the content The main internal inspection items of metal materials are as follows:

1 Mechanical properties: mainly including (tensile test、 high and low temperature tensile test、 compression test、 shear test、 torsion test、 bending test、 impact test、 Rockwell hardness test、 Brinell hardness test、 Vickers hardness test、 flattening test;

2. Chemical composition analysis: mainly analyzing the content of various chemical components in metal materials (Carbon、 silicon、 manganese、 phosphorus、 sulfur、 nickel、 chromium、 molybdenum、 copper、 vanadium、 titanium、 tungsten、 lead、 niobium、 mercury、 tin、 cadmium、 antimony、 aluminum、 magnesium、 iron、 zinc、 nitrogen、 hydrogen、 oxygen) 3 Metallographic testing: mainly including (Non metallic inclusions、 macrostructure、 grain size、 fracture inspection、 coating thickness、 hardening layer depth、 decarburization layer、 gray cast iron metallography、 ductile iron metallography、 metallographic section analysis;

4. Coating testing: commonly used methods include coating thickness Coulomb method、 coating thickness metallography method、 coating thickness eddy current method、 coating thickness X-ray fluorescence method、 coating composition analysis、 and surface stain analysis;

5. Corrosion testing: including Neutral salt spray test、 acidic salt spray test、 copper ion accelerated salt spray test、 sulfur dioxide corrosion test、 hydrogen sulfide corrosion test、 mixed gas corrosion test、 stainless steel 10% oxalic acid corrosion test、 stainless steel sulfuric acid iron sulfate corrosion test、 stainless steel 65% nitric acid corrosion test、 stainless steel nitric acid hydrofluoric acid corrosion test、 stainless steel sulfuric acid copper sulfate corrosion test、 and stainless steel 5% sulfuric acid corrosion test&Nbsp 6. Non destructive testing: including ultrasonic testing、 radiographic testing、 magnetic particle testing、 and penetrant testing 7. Dimensional testing: including dimensional measurement、 symmetry、 verticality、 flatness、 circular runout、 coaxiality、 parallelism、 roundness、 and roughness 8. Welding process qualification: including tensile testing、 bending testing (surface bending、 back bending、 side bending)、 ultrasonic testing、 radiographic testing、 magnetic particle testing、 penetration testing、 surface visual inspection、 macroscopic microstructure testing、 weld hardness testing、 and impact testing 9. Failure analysis includes: the procedures and steps of failure analysis、 investigation of failure events、 determination of the cause or first failure component、 careful collection of failed component wreckage and proper storage、 collection of background information on failed components、 determination of failure analysis plans and development of implementation details、 inspection、 testing、 and analysis

Function of testing report:

1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report

inspection and testing process:

1. Telephone communication and confirmation of requirements

Testing and testing characteristics:

1. The testing industry is fully covered、 meeting different testing needs

3. Engineers provide one-on-one services to make testing more accurate

4. Free initial testing、 with no testing fees charged

5. Self service order delivery for free on-site sampling