10 mm Metal
crushed stone
10 mm crushed stone (chips) — the standard secondary aggregate paired with 20 mm metal in ready-mix designs, and the primary aggregate for thinner structural members, precast units, and pumping mixes.
About 10 mm Metal
Conforms to IS 383:2016 Grade II coarse aggregate. Gradation curve sits cleanly within the IS envelope, with controlled fines content (<1.5%) and flakiness index typically under 25. Used in our RMC mix designs as the secondary stone to round out the gradation between 20 mm and the fine fraction.
Where 10 mm Metal fits — and where it doesn't
Specifying the right aggregate size and grade saves cement, simplifies placement, and avoids rework. Below is a quick guide based on IS / MoRT&H norms and what we see ordered from our Chimakurthy crusher across Prakasam district.
Use 10 mm Metal for
- Standard RMC mix designs (paired with 20 mm metal at ~30:70 ratio)
- Pumping mixes (smaller stone improves flowability)
- Precast concrete — beams, columns, lintels, wall panels
- Thin structural slabs (100 – 150 mm thick)
- Concrete kerbs and channel slabs
- Foundation pads for residential equipment
Don't use 10 mm Metal for
- Mass concrete (use 40 mm to reduce cement content)
- Decorative work needing very smooth surface (use 6 mm)
Common questions about 10 mm Metal
Why are both 10 mm and 20 mm needed in ready-mix concrete?
Can I use only 10 mm for a residential slab?
10 mm Metal supplied across Ongole and Prakasam district
10 mm Metal is loaded ex-works at our Chimakurthy crusher for projects across Ongole and the wider Prakasam district. The distance shown against each town is the pickup distance from the crusher gate — tap any town for project-specific notes and round-trip times.