Mullite Bricks | Shaped Refractories
M-70 Mullite Bricks
- 70% alumina
- SK 38
68-72%
Al₂O₃ Content
Typical value
70 MPa
Cold Crushing Strength
Typical value
1750°C
Max Service Temperature
Typical value
16-20%
Apparent Porosity
Typical value
- Supplying refractories since 1980
- Dispatch from Delhi
- Same-day dispatch of standard stock items
- Pan-India & export
Technical Specification
Typical values. Exact values depend on manufacturer, formulation and applicable test standard.
Chemical Composition (Typical)
| Parameter | Value |
|---|---|
| Al₂O₃ content | 68-72% |
Physical Properties (Typical)
| Parameter | Value |
|---|---|
| Apparent porosity | 16-20% |
| Cold crushing strength | 70 MPa |
| Max service temperature | 1750°C |
M-70 Datasheet
Chemical analysis, physical properties, test methods and available sizes for M-70 Mullite Bricks, shared on request.
Key Characteristics
Taken from the M-70 catalogue values above.
Alumina content
68-72% Al₂O₃
Service temperature
Rated to 1750°C
Crushing strength
CCS 70 MPa
Apparent porosity
16-20%
Typical Applications
Applications for the mullite bricks range
Steel & iron
Blast furnace hot-blast stove & hearth; DRI reactor bustle ports
Glass industry
Glass furnace superstructure, regenerator & sub-paving
Petrochemical & fertiliser
Burner blocks (petrochemical & fertiliser); Carbon black & waste incinerator reactor lining
Kilns & ceramics
Ceramic kiln lining & kiln furniture
FAQ
What is M-70?
M-70 is the 68-72% Al₂O₃ grade in our mullite bricks range, rated to 1750°C. Typical catalogue values: Al₂O₃ content 68-72%; apparent porosity 16-20%; cold crushing strength 70 MPa; max service temperature 1750°C. It is also referred to as 70% alumina and SK 38. Confirm the exact figures on the grade datasheet before specifying.
What is the alumina content of M-70?
M-70 carries 68-72% Al₂O₃. Export enquiries may quote SK 38 for this grade; we match SK codes by alumina content.
Where is M-70 commonly used?
Applications for the mullite bricks range include blast furnace hot-blast stove & hearth, glass furnace superstructure, regenerator & sub-paving, DRI reactor bustle ports, burner blocks (petrochemical & fertiliser), carbon black & waste incinerator reactor lining and ceramic kiln lining & kiln furniture. Grade selection depends on your operating conditions; send them to us and we will confirm M-70 or a neighbouring grade.
How do I select between M-60, M-70 and M-72?
M-60: 60-62% Al₂O₃, rated to 1700°C. M-70: 68-72% Al₂O₃, rated to 1750°C. M-72: 70-75% Al₂O₃. Higher alumina generally brings higher refractoriness and slag resistance. Send us your application and operating temperature and we will confirm the grade.
How do I get a price for M-70, and how fast does it dispatch?
Send your application, operating temperature, dimensions and quantity through the quote form, WhatsApp or +91 98999 57888. Same-day dispatch of standard stock items from Delhi; other items are confirmed with the quotation. Pricing is quoted per enquiry.
Need M-70, or unsure between M-60 and M-72?
Send us your application, operating temperature, dimensions and quantity. Our refractory team will recommend the suitable grade and supply route.
Technical support
Grade selection from our refractory team
Manufacturer-backed
Supplied from established refractory makers
Pan-India & export
Supply across India, GCC, ASEAN and Africa
Other Mullite Bricks Grades
All grades in the mullite bricks range.
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.
M-70 Mullite Bricks
68-72% · 70 MPa