FREE-CUTTING STEELS

The constant progress of machine tools and the increasing production needs require steels particularly apt to machinability for shaving removal. This property is necessary mainly in large mass productions where machines with fully-automatic numerical control are used.
The standard references are:

  • UNI 10087: free-cutting steels provided as hot rolled;
  • UNI 10277-3: free-cutting steel bars provided as cold worked.

Interacciai S.p.a trades and commercializes hot rolled and cold worked free-cutting steels.

PROPERTIES OF FREE-CUTTING STEELS

Machinability is the main property of all free-cutting steels. It means that they are suitable to be machined with shaving removal at the maximum possible speed ensuring the least tool wear, the absolute compliance with dimensional standards and the optimal surface finish of the piece.
This is accomplished by means of maximum addition of Sulphur (and in some cases of Lead as well), that enable the steel to fragment the shaving and lubricate the tool. Such a situation naturally goes to the detriment of the mechanical properties: it is precisely for this reason that free-cutting steels are employed for large mass components which are subject to low stress and not to fatigue tests.

THE FREE-CUTTING STEEL GRADES THAT WE SELL AND DISTRIBUTE

Interacciai S.p.a trades and deals with hot rolled and cold worked free-cutting steels (11SMn30, 11SMnPb30, 11SMn37, 11SMnPb37, 36SMnPb14).
Our company, with its 14 branch-depots in Italy and an annual distribution capacity amounting to 200.000 Tons, is the perfect partner to expand your business.
If you need further information regarding grades, prices and lead times, ask us for a quote with no obligation; you will receive our customized consultancy right away in order to meet your company’s special requirements!

HOT ROLLED FREE-CUTTING STEELS

acciai-per-molle-

COLD WORKED FREE-CUTTING STEELS

free-cutting steels range

Hot Rolled Free-Cutting Steels
18-360
11SMn30
11SMnPb30
11SMn37
11SMnPb37
36SMnPb14
Cold Worked Free-Cutting Steels
COLD DROWN h9
3-100
PEELED h11
16-120
GROUND
3-120
COLD DROWN
9-100
COLD DROWN
8X2 350-300
11SMn30
11SMnPb30
11SMn37
11SMnPb37
36SMnPb14
Chemical Composition and Mechanical Properties
UNI 10027-1 UNI 10027-2 Standard reference C % Mn Si % max S P % max Pb
Acciai non destinati al trattamento termico
11SMn30 1.0715 UNI 10087 ≤0.14 0.90 – 1.30 0.05 0.27 – 0.33  0.11
11SMnPb30 1.0718 UNI 10087 ≤0.14 0.90 – 1.30 0.05 0.27 – 0.33  0.11  0.20 – 0.35
11SMn37 1.0736 UNI 10087 ≤0.14 1.00 – 1.50 0.05 0.34 – 0.40  0.11
11SMnPb37 1.0737 UNI 10087 ≤0.14 1.00 – 1.50 0.05 0.34 – 0.40 0.11 0.20 – 0.35
Acciai destinati alla bonifica
36SMnPb14 1.0765 UNI 10087 0.32-0.39 1.30 – 1.70 0.40 0.10 – 0.18  0.06  0.15 – 0.35

WHY TRUST INTERACCIAI SPA

  • Cutting Service

    Presently, quality, rapidity and potentiality peculiar to Interacciai’s sawing service are some of the strengths that enable the company to ensure its customers’ business development by virtue of a synergistic and competitive partnership.

  • Logistics

    The storage capacity, the wide range of in-stock materials, the widespread transit network and the integration with its internal logistics, empower Interacciai to serve its customers promptly, with effectiveness and reliability.

  • Batch Traceability

    Batch traceability is a further warranty regarding the products supplied by Interacciai. Each bar is assigned an identification code by means of which the supplier of the raw material as well as the successive processing and marketing stages, can always be traced.

  • Certification

    Interacciai can issue product certifications for every batch processed by means of specific tests carried out by our laboratory. Our quality management system is certified ISO 9001:2015

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