Flow Control / Monoblock Stoppers
Standard MBS Monoblock Stoppers
Standard MBS is the 45-55% Al₂O₃ grade in Shanker Agencies’ monoblock stoppers range, rated for continuous service to 1600°C.

Standard MBS technical specification
Typical values for Standard MBS monoblock stoppers. Test methods vary by property and product family, so confirm the applicable standard against the manufacturer datasheet before specifying.
| Property | Standard MBS |
|---|---|
| Al₂O₃ content | 45-55% |
| Carbon content | 25-30% |
| Apparent porosity | 14-18% |
| Bulk density | 2.3 g/cc |
| Max service temperature | 1600°C |
Grade designations and equivalents
How Standard MBS is referenced across Indian and export naming conventions.
| SAPL grade code | Standard MBS |
| Alumina content | 45-55% Al₂O₃ |
| Max service temperature | 1600°C |
Where Standard MBS is used
Full monoblock stoppers range
Compare Standard MBS against every grade SAPL stocks in this family.
| Grade | Al₂O₃ content | Carbon content | Apparent porosity | Bulk density | Max service temperature |
|---|---|---|---|---|---|
| Standard MBS | 45-55% | 25-30% | 14-18% | 2.3 g/cc | 1600°C |
| ZrO₂-C Nose | 50-60% | 28-35% | 13-17% | 2.5 g/cc | 1600°C |
Installation notes
- 1Mount on the stopper-rod mechanism with correct alignment to the tundish well nozzle
- 2Preheat the tundish and stopper assembly per OEM schedule before casting
- 3Connect and verify argon purging line where fitted (anti-clogging)
- 4Match stopper nose to the tundish nozzle bore for a clean seal and accurate flow control
Disclaimer: values are typical and compiled by Shanker Agencies Pvt. Ltd. from standard industry data and published manufacturer specifications. They are indicative, not a guarantee. Confirm the exact grade datasheet before specifying. For a certified datasheet or quotation, contact info@shankeragencies.com or +91 98999 57888.