​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​Cast billets and blooms​ – the perfect start​​​​​

Stainless steel finder

​​​​​Visit Stainless Steel Finder to see all the grades and sizes available as blooms.

Visit steel finder

Cast billets and blooms

Outokumpu continuously cast billets and blooms are typically used as feedstock for rolling wire rod or bar and can be used in certain forging applications. We provide a wide range of ferritic, austenitic, duplex, heat resistant, and precipitation hardening stainless steels with consistently high quality and delivery reliability.


  • Consistent surface, centerline, and cast quality
  • Expert technical support for customer processing
  • Industry-leading variety of grades (including tailored grades)
  • Full product traceability
  • Reliable delivery performance​


 ‭(Hidden)‬ Cast billets

​Cast billet sizes
Billet nominal size (mm) Billet length (mm)
127 x 127 3800-12000
140 x 140 ​3800-12000
150 x 150 ​3800-12000
180 x 180 ​3800-12000
200 x 200 3800-12000

​Cast billet tolerances

Length: The nominal tolerance on billet length is ±50 mm. When a length range is specified, the delivered lengths will be within this range. No lengths will be delivered below the minimum quoted. When billets are ordered with a primary length requirement, wherever possible a secondary acceptable "short" length should be specified to optimize cast weight and/or cut backs for quality reasons. (The proportion of shorts will not exceed 10% without prior approval).

Cast billet surface condition

Billets will normally be supplied as fit for purpose, for example free from surface defects that will be detrimental after reheating and rolling. Defects present in the cast billet may be removed by spot grinding, corner grinding, or full grinding depending on the severity of the defect and at the discretion of the supplier.

Tolerances shown are for guidance only: individual requirements should be specified on customer orders.​

Nominal billet sizes: 127 x 127 mm, 140 x 140 mm, 150 x 150 mm, 180 x 180 mm and 200 x 200 mm.

​​Visit ​Stainless Steel Finder to compare EN and ASTM standard values for different stainless steel grades, thickness and width ranges and available finishes by product type. You can also get information about mechanical strength and elongation.

If your requirements fall outside these standard sizes, please contact your local sales office​.​​​

 Stainless news articles



Cost effective stainless steel slabs for forgings presented at MetalForm China 2015http://www.outokumpu.com/en/stainless-news/product-views/cost-effective-stainless-steel-slabs-for-forgings-presented-at-metalform-china-2015Cost effective stainless steel slabs for forgings presented at MetalForm China 201524/09/2015 21:00:00Cast slabs up to 300 millimeters in thickness offer numerous benefits over traditionally used ingots. Forging an ingot requires more heating, work, energy and time than forming a slab.Steel grades and alloysProduct viewsAPAC2015Slabs, blooms & billets;Long products
Stainless steel slabs for improved yield and cost efficiency in heavy forginghttp://www.outokumpu.com/en/stainless-news/product-views/stainless-steel-slabs-for-improved-yield-and-cost-efficiency-in-heavy-forgingStainless steel slabs for improved yield and cost efficiency in heavy forging15/09/2015 21:00:00Outokumpu, global leader in high-performance stainless steels, will showcase its 300 mm thick stainless steel slabs at MetalForm China 2015 in Shanghai.Steel grades and alloysProduct viewsAPAC2015Cost savings;FabricationSlabs, blooms & billets;Long products
Outokumpu advances its standing in the global forging markethttp://www.outokumpu.com/en/stainless-news/outokumpu-news/outokumpu-advances-its-standing-in-the-global-forging-marketOutokumpu advances its standing in the global forging market03/05/2015 21:00:00Last week, in Cleveland, OH (USA) thousands of forgers gathered at the biannual Forge Fair trade show and symposium to learn more about the latest in materials, machining and trends impacting the forging industry. Steel grades and alloysImageOutokumpu newsGlobal;Americas2015FabricationProdec;Outokumpu ProLong products;Slabs, blooms & billets



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