ASTM A 709 Grade QST 345S Structural and constructional steels
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ASTM A 709 Grade QST 345S Chemical Composition
A709/A709M: 2024 / Standard Specification for Structural Steel for Bridges
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ASTM A 709 Grade QST 345S Physical Properties
Temperature
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ASTM A 709 Grade QST 345S Heat Treatments
- Following rapid quenching to achieve a surface temperature below the martensite start temperature, Ms, the shapes shall be allowed to auto-temper to a self-tempering temperature (STT) that shall be 595°C (1100°F) minimum and 705°C (1300°F) maximum. The STT shall be reported on the mill test report. Due to the inherent characteristics of the QST process, the shapes shall not be formed nor post weld heat treated at temperatures exceeding 600°C (1100°F).
ASTM A 709 Grade QST 345S Mechanical Properties
Temperature
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ASTM A 709 Grade QST 345S International Equivalent Materials
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- 19Cross References
- 12Composition
- 15Mechanical Properties
- 3Physical Properties
- 1Heat Treatment
- -Metallography
- -Machinability
- -Stress-Strain
- -Formability
- -Fatigue
- -Fracture
- -Creep
- 83Joints
- -Coatings
- 74Dimensions
- 1Tribology
- 8491Corrosion
- -Ageing
- -Weatherability
- -Irradiation
- -Total Suppliers