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Steels with alloy elements, for surface hardening
Alloyed carburized steels contain some characterizing elements that confer different characteristics depending on the applications. After machining, carburizing and tempering, usually performed in oil, these steels have high surface hardness characteristics and notable core toughness.
The alloy elements (manganese, chromium, nickel, and molybdenum), added individually or in combination with each other, allow the types to be diversified to use the type best suited to specific needs.
The temperability increases with the increase of the alloy elements, and therefore it is possible to obtain core transformed structures into increasingly larger pieces. In particular, chromium tends to increase the core hardness, while the nickel improves toughness and resistance to impacts.
The complex of alloyed carburized steels available at Rodacciai allows a truly wide range of applications to be covered, for pieces with sizes from small to considerable.
Some of these steels are available in the leaded version, which facilitates machining by chip removal.
Product Code
RM16 RM16Pb
Quality - Wr.N.
16MnCr5 - Nr.1.7131 16MnCrS5 - Nr.1.7139
Manganese and chromium steel suitable for small or medium-sized pieces.
Product Code
RM20
Quality - Wr.N.
20MnCr5 - Nr.1.7147 20MnCrS5 - Nr.1.7149
Manganese and chromium steel with a content of alloy elements slightly higher than the previous type, suitable for large pieces.
Product Code
RN0 RN0Pb
Quality - Wr.N.
12NiCr3
Steel with a low chrome, nickel, and carbon content. Suitable for small pieces. It has a good cold deformability at the globular annealed state.
Product Code
RN2 RN2Pb
Quality - Wr.N.
16NiCr4 - Nr.1.5714 16NiCrS4 - Nr.1.5715
Steel with the addition of chromium and nickel in higher quantities than RN0. Used for pins and gears.
Product Code
RN3
Quality - Wr.N.
20CrNi4
Steel with the addition of chromium and nickel in higher quantities than RN0 and RN2. Has a greater temperability, with higher surface and core characteristics.
Product Code
RG2
Quality - Wr.N.
16NiCr11
Steel that originated in the automobile industry, no longer present in the international standards. Thanks to its high nickel content, it is used for pieces that are particularly subject to fatigue and vibrations.
Product Code
RC0
Quality - Wr.N.
20NiCrMo2-2 - Nr.1.6523 20NiCrMoS2-2 - Nr.1.6526
Steel with chromium, nickel, and molybdenum, suitable for pieces of a complex shape with good core tenacity.
Product Code
RC2 RC2Pb
Quality - Wr.N.
17NiCrMo6-4 - Nr.1.6566 17NiCrMoS6-4 - Nr.1.6569*
Alloy steel with chromium, nickel, and molybdenum. This is a carburized steel with excellent temperability that is often used to obtain pieces with high requirements and complex shapes such as gears and large shafts subject to fatigue and vibrations.
