Two engineered sand system solutions built for different points on the performance-to-economy curve. From cost-efficient medium/high sand-to-metal ratio castings to premium, low-ratio, high-precision work.
SMECBOND™ is an economical solution enriched with significant Sodium Bentonite and Indian Kutch Bentonite. Designed for cost-conscious foundries, it delivers dependable mould strength, high thermal durability, and consistent casting performance for medium and high sand-to-metal ratio applications.
Smecbond™ — Physical / Chemical Properties
| Parameter | Specification |
|---|---|
| Moisture | 12% Max |
| Iron content as Fe2O3 | 9–10% |
| Methylene Blue Value (M.B). Value | 360 mg/gm Min |
| M.B. Value (Calcined at 550°C) | 55–60% M.B. Value |
| Swelling Index | 28 ml/2 gm Min |
| Gelling Time | Instant |
| Gel Formation Index | 60 Min |
Note: Test as per IS 12446:2007.
SANDIRON PLUS® is a premium blend of high thermal durable imported bentonites and premium Indian Kutch-based bentonite. Engineered for demanding foundry operations, it delivers outstanding mould strength, lower moisture demand, and superior casting quality across a wide range of applications.
Sandiron Plus® — Physical / Chemical Properties
| Parameter | Specification |
|---|---|
| Moisture | 12% Max |
| Iron content as Fe2O3 | 5–7% |
| Methylene Blue Value (M.B) Value | 340 mg/gm Min |
| M.B. Value (Calcined at 550°C) | 70–75% M.B. Value |
| Swelling Index | 25 ml/2 gm Min |
| Gelling Time | Instant |
| Gel Formation Index | 50 Min |
Note: Test as per IS 12446:2007.
Reference: Engineered Bentonite Solution chart
| Parameter | Smecbond™ | Sandiron Plus® |
|---|---|---|
| Iron Foundry | ● | ● |
| Non-Ferrous | ● | — |
| Economical | ●●● | ● |
| Sand-to-Metal Ratio | Medium, High | Low, Medium, High |
| Strength Related Properties | ● | ●●● |
| Thermal Durability | ● | ●●● |
| Casting Weight Reduction* | ● | ●●● |
| Reduced Sand-Related Defects | ● | ●●● |
| Good Peel-Off | ● | ●●● |
| Excellent Surface Finish | ● | ●●● |
*Weight reduction depends on casting thickness, surface-to-volume ratio, degree of core grade of bentonite, type of molding machine, and geometry of components. This can range from 0%–3% of the present weight of the casting.
Pale Yellow colored powder packed in 40 kg HDPE(High-Density Polyethylene) Bags

Always ensure that the material is stored and used as per the method described in the MSDS(Material Safety Data Sheet) of the Product provided.
Five years from the date of packing.
Can be used directly in the sand mixer for preparation of Molding sand.
MPM’s highly experienced and well-qualified technical applications team is also available for domain know-how consulting in the application of Smecbond™ and Sandiron Plus®.
Bentonite Blend Brochure
Information - English - 07-07-2026 - 14.82 MB
Indian Bentonite
Information - English - 10-08-2026 - 0.58 MB
MPM Product Brochure
Information - English - 07-07-2026 - 52.72 MB
From economical medium-to-high ratio castings to premium low-ratio precision work, our technical applications team can recommend the right grade for your sand system.