NB P280GH Structural and constructional steels
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NB P280GH Chemical Composition
NB/T 20005.4: 2012 / Carbon steel and low alloy steel for pressurized water reactor nuclear power plants - Part 4: The forged or rolled parts for use in steam generator main steam systems, feedwater flow control systems, auxiliary feedwater systems and turbine bypass systems
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NB P280GH Physical Properties
Temperature
This material has 147 properties — only a subset is shown here.
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NB P280GH Heat Treatments
- Normalized condition:
- heating temperature: 890°C - 940°C;
- Insulation time: according to the thickness of each millimeter insulation 1 min., but not less than 30 min;
- Method of cooling: still air. - Normalized condition:
- Temperature 890 to 940°C,
- Holding time: 1 minute per mm in., thickness for a minimum time of 30 min.
- Method of cooling: still air.
Quenched and tempered condition (parts with average thickness above 80 mm):
- Temperature 890 to 940°C,
- Holding time: 1 minute per mm in thickness for a minimum time of 30 min.
- Method of cooling: water.
- Tempering: minimum temperature at all points: 620°C.
NB P280GH Mechanical Properties
Temperature
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NB P280GH 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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- 44Cross References
- 36Composition
- 20Mechanical Properties
- 3Physical Properties
- 3Heat Treatment
- -Metallography
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- -Stress-Strain
- -Formability
- -Fatigue
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