ASTM A 194 Grade 2HM Structural and constructional steels
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ASTM A 194 Grade 2HM Chemical Composition
A194/A194M: 2026 / Standard Specification for Carbon Steel, Alloy Steel, and Stainless Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both
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ASTM A 194 Grade 2HM Physical Properties
Temperature
This material has 23 properties — only a subset is shown here.
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ASTM A 194 Grade 2HM Heat Treatments
- It shall be uniformly reheated to the proper austenitizing temperature (a group thus reheated being known as a quenching charge) and quenched under substantially uniform conditions for each quenching charge and tempered; It shall be liquid quenched; Tempering at min 620°C (1150°F).
A final stress relief shall be done at or above the minimum tempering temperature after all forming, machining, and tapping operations. This final stress relief may be the tempering operation.
Sample nuts: The manufacturer shall also perform hardness tests on sample nuts after the test heat treatment at 540°C (1000°F). After completion of all production heat treatments heat the specimen nuts to the temperatures indicated below for 24h, then slow cool. Test at room temperature.
ASTM A 194 Grade 2HM Mechanical Properties
Temperature
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ASTM A 194 Grade 2HM International Equivalent Materials
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Equivalence categories reflect chemical-composition and mechanical-property comparison — always verify suitability against the governing specification for your application.
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- 6Cross References
- 5Composition
- 4Mechanical Properties
- 3Physical Properties
- 1Heat Treatment
- -Metallography
- -Machinability
- -Stress-Strain
- -Formability
- -Fatigue
- -Fracture
- -Creep
- -Joints
- -Coatings
- -Dimensions
- -Tribology
- -Corrosion
- -Ageing
- -Weatherability
- -Irradiation
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