Boiler-quality Plate — ASTM A20
Boiler-quality plate — pressure-vessel plate for boilers and vessels. Boiler-quality (BQ) plate is carbon or chrome-moly steel plate made to pressure-vessel specifications, with controlled chemistry and tested properties.
- ASTM A20
- 2 grades
- EN 10204 3.1 / 3.2
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is a boiler-quality plate?
A boiler-quality plate is pressure-vessel plate for boilers and vessels. Boiler-quality (BQ) plate is carbon or chrome-moly steel plate made to pressure-vessel specifications, with controlled chemistry and tested properties.
Boiler-quality Plate: What to Know Before Ordering
- SA-516, SA-387 and similar
- Normalised on request
- UT and impact tests
Boiler-quality Plate Materials & Grades
| Grade | Material standard | Best for |
|---|---|---|
| SA-516 Gr 70 boiler-quality plate | ASTM A516 Gr 70 · ASME SA-516 | Boilers, pressure vessels and storage tanks |
| SA-387 Gr 11 Cl 2 boiler-quality plate | ASTM A387 Gr 11 Cl 2 · ASME SA-387 | Hot, high-pressure reactors and heat exchangers |
Boiler-quality plate — questions buyers ask
What is a boiler-quality plate?
A boiler-quality plate is pressure-vessel plate for boilers and vessels. Boiler-quality (BQ) plate is carbon or chrome-moly steel plate made to pressure-vessel specifications, with controlled chemistry and tested properties.
What is BQ plate?
Boiler-quality plate — pressure-vessel steel such as SA-516 Gr 70, certified for boilers and vessels.
Which grades are boiler-quality plates available in?
SA-516 Gr 70, SA-387 Gr 11 Cl 2.
Which standard covers boiler-quality plate dimensions?
ASTM A20. The material standard depends on the grade.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026