Lloyds LR Type 540 Cast steels
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This material has 41 properties — only a subset is shown here.
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Lloyds LR Type 540 Chemical Composition
Rules for the Manufacture, Testing and Certification of Materials, Chapter 4 Section 3; Steel Castings; Castings for machinery construction, Lloyd's Register, 2025
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Lloyds LR Type 540 Heat Treatments
- Castings are to be supplied:
a) Normalised; or
b) Normalised and tempered at a temperature of not less than 550°C; or
c) Quenched and tempered at a temperature of not less than 550°C.
Engine bedplate castings, turbine castings and any other castings where dimensional stability and freedom from internal stresses are important, are to be given a stress relief heat treatment. This is to be at a temperature not lower than 550°C, followed by furnace cooling to 300°C or lower. Alternatively, full annealing may be used provided that the castings are furnace cooled to 300°C or lower. - Castings are to be supplied:
Fully annealed
Normalised or
Normalised and tempered at a temperature of not less than 550°C or
Quenched and tempered at a temperature of not less than 550°C
Lloyds LR Type 540 Mechanical Properties
Temperature
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Lloyds LR Type 540 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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- 9Cross References
- 18Composition
- 12Mechanical Properties
- -Physical Properties
- 2Heat Treatment
- -Metallography
- -Machinability
- -Stress-Strain
- -Formability
- -Fatigue
- -Fracture
- -Creep
- -Joints
- -Coatings
- -Dimensions
- -Tribology
- -Corrosion
- -Ageing
- -Weatherability
- -Irradiation
- -Total Suppliers