ABS AB/A1 Structural and constructional steels
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This material has 38 properties — only a subset is shown here.
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ABS AB/A1 Chemical Composition
Rules for Materials and Welding, Part 2; Chapter 3 Section 7; Materials for Machinery, Boilers, Pressure Vessels, and Piping; Steel Machinery Forgings, American Bureau of Shipping, 2021
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ABS AB/A1 Physical Properties
Temperature
This material has 38 properties — only a subset is shown here.
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ABS AB/A1 Heat Treatments
Cooling prior to heat treatment: After forging and before reheating for heat treatment, the forgings are allowed to cool in a manner to prevent injury and to accomplish transformation.
Annealing: The forgings are to be reheated to and held at the proper austenitizing temperature for a sufficient time to effect the desired transformation and then be allowed to cool slowly and evenly in the furnace until the temperature has fallen to about 455°C (850°F) or lower.
Normalizing: The forgings are to be reheated to and held at the proper temperature above the transformation range for a sufficient time to effect the desired transformation and then withdrawn from the furnace and allowed to cool in air.
Tempering: The forgings are to be reheated to and held at the proper temperature, which will be below the transformation range, but above 620°C (1150°F), and then to be cooled at a rate not exceeding 55°C (100°F)/h until temperature below 315°C (600°F) is reached.
Stress Relieving: Where heat treatment for mechanical properties is carried out before final machining, the forgings are to be stress relieved after machining at a temperature 28°C (50°F) to 55°C (100°F) below the previous tempering temperature, but in no case less than 540°C (1000°F). The cooling rate is not to exceed 55°C (100°F)/h until temperature below 315°C (600°F) is reached.
Retreatment: The manufacturer may re-heat treat the forging, but not more than three additional times.
ABS AB/A1 Mechanical Properties
Temperature
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ABS AB/A1 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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- 2Cross References
- 7Composition
- 25Mechanical 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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