Free-cutting steels quenched and tempered
High machinability steels with elevated mechanical characteristics
Quenched and tempered free-cutting steels have a higher carbon content than other free-cutting steels, while maintaining a good machinability thanks to the presence of sulfur in smaller quantities. This type of steel can be prepared with the quenching and tempering before drawing or peeling so as to be able to heat-treat the pieces after machining.
When quenched and tempered, these steels have elevated mechanical characteristics and can also be used for parts that require greater resistance and toughness than those of steels without heat treatment.
RANGE Free-cutting steels quenched and tempered
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Rodacciai Mark
35S20
Steel name
35S20 - Nr.1.0726
Steel with low carbon content and with the addition of sulfur for improved machinability.
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Rodacciai Mark
46S20
Steel name
46S20 - Nr.1.0727
Steel with the addition of sulfur only; the higher carbon content gives this quenched and tempered steel greater mechanical characteristics.
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Rodacciai Mark
PR40
Steel name
(38SMn28+Se) - Nr.1.0760
Free-cutting steel with an average carbon content; the addition of tellurium allows an even better machinability.
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Rodacciai Mark
44SMN28
Steel name
44SMn28 - Nr.1.0762
Free-cutting steel with sulfur only, with a high carbon content to obtain optimal hardness after tempering.
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Rodacciai Mark
SAE1144PB
Steel name
44SMnPb28 - Nr.1.0763
Steel with the addition of sulfur and lead; the special carbon content allows excellent hardness to be obtained after tempering.
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Rodacciai Mark
PR70-SAE1137
Steel name
36SMn14 - Nr.1.0764
Classico acciaio automatico da bonifica con aggiunta di solo zolfo, presenta una temprabilità migliorata per garantire una migliore modificabilità, è possibile richiederlo anche allo stato di bonificato
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Rodacciai Mark
PR80-SAE1137PB
Steel name
36SMnPb14 - Nr.1.0765
Classic quenched and tempered free-cutting steel with the addition of sulfur and lead. The SAE1137Pb version, with the same composition, has a slightly higher temperability and is used for products delivered at the quenched and tempered state.
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Rodacciai Mark
46S20PB
Steel name
46SPb20
Steel with the addition of sulfur and lead; the higher carbon content gives this quenched and tempered steel greater mechanical characteristics.
