Common testing items for steel:

1. Mechanical and technological performance testing: various hardness tests, tensile tests, compression tests, bending tests, flattening tests, impact tests, drop hammer tests, torsion tests, winding tests, bond strength, weld joint inspection, welding procedure qualification, etc.

2. Metallographic structure inspection: low magnification structure and defects, microstructure, grain size, hardenability, fracture surface inspection, carbides, graphite grading, sulfur markings, inclusions, decarburized layer, carburized layer, nitrided layer, corrosion test, taper hairline cracks, intergranular corrosion of stainless steel, etc.

3. Chemical composition analysis: the testing range covers most elements in the periodic table, up to about 70, including: carbon, silicon, manganese, phosphorus, sulfur, chromium, nickel, copper, molybdenum, vanadium, titanium, tungsten, cobalt, aluminum, niobium, zinc, cadmium, calcium, magnesium, boron, arsenic, antimony, tin, bismuth, lead.

4. Bending Test: Bending, Repeated Bending

5. Tensile Test: High Temperature, Room Temperature, Low Temperature Tensile Test

6. Hardness Test: Rockwell Hardness Test, Brinell Hardness Test, Vickers Hardness Test

7. Impact Test: Room Temperature Impact Test, Low Temperature Impact Test, High Temperature Impact Test

8. Compression Test: Compression Yield Point, Compressive Strength, Specified Non-proportional Compressive Stress, Specified Total Compressive Stress, Compression Modulus

9. Mechanical Property Tests for Welded Parts: Deformation, Fracture, Adhesion, Creep, Fatigue, etc.

10. Mechanical Property Tests for Fasteners: Tensile Test, Proof Load, Wedge Load Test, Torque Test, Hole Enlargement Test, Torque Coefficient, Anti-Slip Coefficient, etc.

11. Performance Tests: Tensile Load, Stress Relaxation Test, Zinc Plating Amount Test, Adhesion Test, Copper Immersion Test, etc.

Time：23/10/2026 16:46:37

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