Grinding with a steel expertise

ABS Sfere is the ABS brand dedicated to grinding media:

All the knowledge and experience of a steel producer at the service of the mining industry.

A European high-quality grinding balls manufacturer by capacity and range

Guaranteed raw material supply
Thanks to ABS scrap management
150.000 tonnes of forged grinding balls for the mining industry
A wide product range
Two production lines provide a complete range of grinding balls
from 30mm up to 150mm

A wide product range

Nominal ball diameter (mm) Nominal ball weight (g) Number of balls per ton (nr/t)
30 0.111 9.011
40 0.263 3.801
50 0.514 1.946
60 0.888 1,126
70 1.410 709
80 2.104 475
90 2.996 334
100 4.110 243
110 5.471 183
125 8.028 125
130 9.030 111
140 11.279 89
150 13.872 72
Quality Hardness rockwell (hrc) Main feature
Full hardness 60 - 65 High abrasion resistence
Intermediate hardness 55 - 60 Combining impact and abrasion resistance
Reduced hardness 48 - 55 High impact resistance

Long lasting grinding balls

Quality control throughout the entire production cycle
Tailored heat treatment
The martensitic structure obtained during the manufacturing of the grinding balls guarantees excellent hardness
Drop test
SAG balls are drop-tested to ensure the mechanical characteristic required by our customers
ABS certifications
ISO 14001
ISO 9001
ISO 45001

Eco-sustainable quality that lasts over time

100% European scrap.
100% made in Italy high-quality steel manufactured in Italy in one single site.
-65% CO2 emissions in steel production compared to blast furnace steel production methods
94% of the raw material used is of recycled origin
Steel from scrap produced with EAF furnace

ACM Research and Development Centre

A tailor-made product
Drawing on our ACM Research Centre expertise, we are able to meet every customer requirement by creating specifically tailored alloys

Optimized chemistry
The chemical composition of the bars from which the grinding media are manufactured can be tailored according to specific requirements
Heat treatment across the entire range

SAG balls from Rotoforgia and exclusive heat treatments
Additional heat treatments are currently being studied to further improve the metallurgical characteristics of our SAG balls range

Technical Support

A long history and an in-depth experience in the application of steel.

Support during both application and use of our grinding balls
Specification and execution of grinding tests:
Marked Ball wear test
Production test
Processing plant personnel training courses

Logistics Support

In-house logistics service for our territory of reference
We guarantee carriage to the final destination of our products, if requested
Delocalized warehouses in the different mining areas where grinding balls are used the most
Customization of shipping packaging
We offer our customers a range of packaging solutions to meet specific requirements

ABS is the steel-making division of the Danieli Group

The construction leader of steel plants all over the world

Steel making Plant making Danieli Group
Employees 1,541 8,191 9,732
EBIDTA 170 M€ 253 M€ 424 M€
Revenues 1,442 M€ 2,559 M€ 4,102 M€

Absolute Steel Quality

ABS was created in 1988, by joining together hundreds of years of experience from two historical Italian companies.

We boast a unique range at a single site.

We make more than 1,000 types fo steel grades: a variety that makes us unique in the international arena.

In ABS we produce steel from 94% of scrap and are constantly committed to improving the energy efficiency of our production processes to reduce CO2 emissions.

Experience, strength and know-how

ABS products are recognized and appreciated in many industrial sectors, including:

Mechanical Engineering
Power Generation, Mining, Railway & Others
Oil & Gas