ASME SA-645 Grade B Structural and constructional steels
Data updates
This material has 70 properties — only a subset is shown here.
Unlock full material properties, including detailed values across temperatures and conditions.
Free registration required • Instant access
ASME SA-645 Grade B Chemical Composition
ASME Boiler and Pressure Vessel Code An International Code Section II - Part A Ferrous Material Specifications, American Society of Mechanical Engineers, 2025
Looking for full material performance data?
Free registration required • Instant access
ASME SA-645 Grade B Physical Properties
Temperature
This material has 70 properties — only a subset is shown here.
Unlock detailed physical values across temperatures and conditions.
Free registration required • Instant access
ASME SA-645 Grade B Heat Treatments
- Hardening - The plates shall be heated to a temperature within the range from 800 to 870°C (1470 to 1600°F), held within that temperature range for a sufficient time to obtain uniform temperature throughout the plate thickness, and then quenched in a liquid medium.
Intermediate Heat Treatment - The plates shall be reheated to a temperature within the range from 650 to 720°C (1200 to 1330°F), held within that temperature range for a minimum of 2.4 min/mm of thickness, but in no case less than 15 min, and then water-quenched to below 150°C (300°F) for nominal plate thicknesses over 16 mm, or cooled in air or water-quenched to below 150°C (300°F) for nominal plate thicknesses of 16 mm and under.
Tempering - The plates shall be reheated to a temperature within the range from 550 to 620°C (1020 to 1150°F), held within that temperature range for a minimum of 1.2 min/mm of thickness, but in no case less than 15 min, and then water-quenched to below 150°C (300°F).
ASME SA-645 Grade B Mechanical Properties
Temperature
Need complete mechanical properties to make the right choice?
Get complete data on strength, hardness, fatigue, and more.
Free registration required • Instant access
ASME SA-645 Grade B International Equivalent Materials
Showing 3 of 3 results.
Equivalence categories reflect chemical-composition and mechanical-property comparison — always verify suitability against the governing specification for your application.
Need the full list of 3 international equivalents?
See all 3 equivalent grades with detailed mapping by standard, producer and equivalence category.
Free registration required • Instant access
Optimize material selection for your application - Book A Demo
- 3Cross References
- 10Composition
- 15Mechanical Properties
- 3Physical Properties
- 1Heat Treatment
- -Metallography
- -Machinability
- -Stress-Strain
- -Formability
- -Fatigue
- -Fracture
- 4Creep
- -Joints
- -Coatings
- 34Dimensions
- -Tribology
- -Corrosion
- -Ageing
- -Weatherability
- -Irradiation
- -Total Suppliers