Billet vs Bloom vs Slab: Differences Explained
How billets, blooms and slabs differ in section, process and end use, and which Kesari Alloys sizes are billets and which are blooms.
Billet
A billet is a square or round section, usually up to about 160 mm, produced by continuous casting. It is rolled into long products or forged into parts.
Bloom
A bloom is a larger continuously cast section, from about 200 mm. It is rolled into billets or heavier sections, or forged directly.
Slab
A slab has a rectangular, flat section and is rolled into plate, sheet and coil. It is not a forging stock.
Kesari Alloys sizes
Billets: 100 × 100, 125 × 125 and 160 × 160 mm. Blooms: 200 × 200 and 250 × 250 mm, and 200 mm diameter round. All in lengths up to 12 metres.
Steel billet vs bloom: which to pick
Use 100 and 125 mm billets for small forgings, 160 mm for medium forgings, and blooms for larger forgings and ring rolling. See how to choose the right billet size.
Related guides
What Is a Steel Billet? Sizes, Grades and Uses
A plain guide to steel billets: how they are made, typical sizes, grades and where they are used.
Continuous Casting Process for Steel Billets
How liquid steel becomes a solid billet in continuous casting, and what controls quality.
How to Choose the Right Billet Size for Forging and Rolling
A method to match billet or bloom section to the finished forging or rolled section, using reduction ratio and yield.
Billet size chart · Weight calculator · Steel grade directory