ASME SA-487 Grade 9 Class A Cast steels
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ASME SA-487 Grade 9 Class A Chemical Composition
ASME Boiler and Pressure Vessel Code An International Code Section II - Part A Ferrous Material Specifications, American Society of Mechanical Engineers, 2025
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ASME SA-487 Grade 9 Class A Physical Properties
Temperature
This material has 35 properties — only a subset is shown here.
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ASME SA-487 Grade 9 Class A Heat Treatments
- Castings shall be heat treated as follows:
Austenitized at 870°C (1600°F), air cooled or liquid quenched to below 260°C (500°F) and tempered at 595°C (1100°F) minimum.
Preliminary heat treatment prior to final heat treatment as well as multiple tempering is permitted. Heat treatment shall be performed after the castings have been allowed to cool below the transformation range.
If castings are welded, they shall be post welded heat treated at a temperature of 595°C (1100°F) minimum, (the post weld heat treatment temperature must be at or below the final tempering temperature), or re-heat treated as detailed above. The minimum pre-heat temperature prior to welding shall be 150°C (300°F).
ASME SA-487 Grade 9 Class A Mechanical Properties
Temperature
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ASME SA-487 Grade 9 Class A International Equivalent Materials
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