ADDITIONAL STEEL GRADES FOR OTHER SPECIFIC USES

 

SPRING STEELS

Springs are employed mainly to support an intermittent or pulsating load, as in the case of vehicles; in addition to it, springs are used to accumulate energy under load or at steady-state as in some braking systems. The ideal material for spring manufacturing must be able to deform plastically without undergoing any plastic deformation, therefore it must have high yield strength (Rp0.2) and fatigue resistance. In fact, springs are mechanical components which are generally subjected to repetitive stresses/strains.

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HOT ROLLED AND FORGED SPRING STEELS

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Hot Rolled and Forged Spring Steels
HOT ROLLED
18-360
46Si7 √
56Si7 √
Chemical Composition and Mechanical Properties
UNI 10027-1 UNI 10027-2 Standard C % Mn Si % max S % max P % max
46Si7 1.5024 UNI 10089 0.42 – 0.50 0.50 – 0.80 1.50 – 2.00 0.025 0.025 max
56Si7 1.5026 UNI 10089 0.52 – 0.60 0.60 – 0.90 1.60 – 2.00 0.025 0.025 max

BEARING STEELS

Bearings are parts of machines that are cyclically subject to compression, shearing and tensile stresses. Their load carrying capacity depends on material hardness and elastic limit. Besides this property, there are many others that determine the service life of bearings such as the steel grade, their manufacturing process and operational conditions. Among these, there are lubrication, presence of wear particles, corrosion and quickness of load application.
Bearing steels must have:

  • High hardness;
  • A microstructure as much homogeneous as possible, without segregations in highly stressed sections;
  • A degree of hardenability that is suitable for the work piece size;
  • Good stability in case of changes;
  • Good machinability with machine tools;
  • Good corrosion and high- temperature resistance when they are used for special applications.
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HOT ROLLED AND FORGED BEARING STEELS

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COLD WORKED BEARING STEELS

acciai-PER-CUSCINETTI

Hot Rolled and Forged Bearing Steels
HOT ROLLED
18-360
102Cr6 √
Cold Worked Bearing Steels
PEELED h11
16-20
102Cr6 √
Chemical Composition and Mechanical Properties
UNI 10027-1 UNI 10027-2 Standard C % Mn % Si % max S % max P % max Cr % Mo % max
100cR6 1.3505 ISO 683 0.90 – 1.08 0.21 – 0.49 0.12 – 0.38 0.020 0.030 1.30 – 1.65 0.010

BORON STEELS

Boron has been recently added in special structural steels as when it is present with 0,003-0,005 content, the hardenability of carbon and low-alloy steels increases consistently and prices remain low. A higher Boron content can provoke warm brittleness phenomena. In addition to it, Boron can have detrimental effects on welding. It is employed as de-oxidant as well. We deal with:

  • 18MnCrB5
  • 27MnCrB5
  • 30MnB5
  • 33MnCrB5
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HOT ROLLED BORON STEELS

ACCIAI AL BORO

Hot Rolled Boron Steels
HOT ROLLED
20-100		 PIATTI
40×120 e 150×60		 BILLETS
30-100
18MnCrB5 √ √ √
27MnCrB5 √ √ √
30MnB5 √ √ √
33MnCrB5 √ √ √
Chemical Composition and Mechanical Properties
UNI 10027-1 UNI 10027-2 Standard C % Mn % Si % max S % max P % max Cr % B % max
27MnCrB5-2 1.7182 UNI 10083 0.24 – 0.30 1.10 – 1.40 0.40 0.035 0.025 0.30 – 0.60 0.0008 – 0.0050
33MnCrB5-2 1.7185 UNI 10083 0.30 – 0.36 1.20 – 1.50 0.40 0.035 0.025 0.30 – 0.60 0.0008 – 0.0050
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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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