Islah Çelikleri

Yüksek mekanik özelliklere sahip çelikler

Islah çelikleri, sahip olduğu özel kimyasal yapısıyla son derece tok ve sert bir yapıya sahiptir. Bu çelikler, en zorlu koşullarda bile çalışabilme kapasitesine sahiptir.

Temperlenebilirlik hızlı soğumaya tabi tutulan çeliğin yapısının değişebilme kapasitesini ifade eder. Çeliğin yüzeyine uygulanan su verme ve temperleme işlemleri genellikle mekanik işlemlerden sonra uygulanır. Bu nedenle ıslah çelikleri, uygulamalara bağlı olarak, hem tavlı hem de tavsız olarak temin edilebilir.

Üretim Aralığı

  Uygulama Profil Aralık
[mm]
Yüzey Tolerans

Çubuk

Sıcak Haddelenmiş Yuvarlak 20-200 İşlem Görmemiş
Kabuk Soyulmuş
Soğuk Çekilmiş Yuvarlak
Altıköşe
Kare
3-70
3-70
4-60
Parlak EN 10278
h9
h10
h11
Kabuk Soyulmuş
Sıcak Haddelenmiş
Yuvarlak 20-100 Parlak EN 10278
h9
h10
h11
Taşlanmış Yuvarlak 50-60 Parlak EN 10278
h7
h8
h9
h10
h11
Kangal Soğuk Çekilmiş Yuvarlak
Altıköşe
Kare
2-22
3-12
4-12
Parlak
Fosfatlı
EN 10278
h9
h10
h11
  Uygulama Profil Aralık
[mm]
Yüzey Tolerans

Çubuk

Sıcak Haddelenmiş Yuvarlak 20-200 İşlem Görmemiş
Kabuk Soyulmuş
Soğuk Çekilmiş Yuvarlak
Altıköşe
Kare
3-70
3-70
4-60
Parlak EN 10278
h9
h10
h11
Kabuk Soyulmuş
Sıcak Haddelenmiş
Yuvarlak 20-100 Parlak EN 10278
h9
h10
h11
Taşlanmış Yuvarlak 50-60 Parlak EN 10278
h7
h8
h9
h10
h11
Kangal Soğuk Çekilmiş Yuvarlak
Altıköşe
Kare
2-22
3-12
4-12
Parlak
Fosfatlı
EN 10278
h9
h10
h11
Kalite WNr. Açıklama Pdf
C22E
C22EPb
1.1151 Non-alloy steel with very low temperability, temperable only in water and used for simple and small pieces. Often used without the quenching and tempering treatment.
C30E
C30R
1.1178
1.1179
Non-alloy steel quenchable and temperable in water with higher carbon contents than C22E. Used for simple pieces of limited size.
C35E
C35R
C35Pb
1.1181
1.1180
Non-alloy steel quenchable and temperable in water, higher carbon content than the previous types. Widely used thanks to its slightly higher temperability.
C40
C40R
C40RPb
1.1186
1.1189
Non-alloy steel quenchable and temperable in water and oil, allows higher mechanical characteristics to be obtained. It is one of the most used steels in Europe.
C45E
C45R
C45RPb
1.1191
1.1201
Non-alloy steel, quenchable and temperable in water and oil. Pieces of a particular size with sufficiently transformed structures can be extracted. It is one of the most used steels in Europe.
C50E
C50RPb
1.1206 Non-alloy steel quenchable and temperable in oil, with high carbon levels, allows pieces with rather high hardness to be obtained. Also suitable for surface tempering.
C55E
C55
1.1203 The high carbon levels of this non-alloy quenched and tempered steel allow high hardness and transformed structures to be obtained even in pieces of considerable size. Often used for surface tempering.
Kalite WNr. Açıklama Pdf
41Cr4
41CrS4
1.7035
1.7039
A low-alloy steel with the addition of chromium only, it is primarily used in bolts for small- and medium-sized pieces.
36CrMn
36CrMn5Pb
  A chromium and manganese alloy steel, no longer present in the unified standards, it is widely used in the quenched and tempered state for pins and hubs of heavy equipment and more generally in the automotive field.
25CrMo4
25CrMoS4
25CrMoS4Pb
1.7218
1.7213
Alloy steel with chrome and molybdenum and a low carbon content; for this reason it is one of the few quenched and welded steels that can be welded (with some precautions) and it is used in gears and for small- and medium-sized pieces. The presence of molybdenum avoids the phenomenon of fragility by tempering.
30CrMo4   Steel similar to the previous one: the greater carbon content makes welding more difficult, but favors temperability.
34CrMo4
34CrMoS4
1.7220
1.7226
Steel with chromium and molybdenum, used in the production of average-sized pieces. At the quenched and tempered state it has good mechanical characteristics and does not suffer from embrittlement from tempering.
42CrMo4
42CrMoS4
1.7225
1.7227
The most widely used of the quenched and tempered steels. The excellent temperability and the absence of embrittlement fragility make this steel suitable for the production of a variety of pieces, also of medium-large size, with high mechanical characteristics.
50CrMo4 1.7228 Steel similar to the above, but with a higher carbon content. It is used for the same purposes, when a surface hardness obtained by induction tempering is also necessary.
39NiCrMo3
39NiCrMo3Pb
1.6510 A steel widely used in Italy, it is in any case included in the European standards. The addition of nickel in addition to chromium-molybdenum improves the performance of the pieces obtained, especially with regard to resistance to fatigue and vibrations.
34CrNiMo6 1.6582 This is the steel most commonly used in northern Europe when the addition of nickel is required by the severe use conditions. It has an elevated temperability thanks to the presence of significant levels of nickel and chromium: it is even suitable for the construction of large pieces that, at the quenched and tempered state, have well transformed structures down to the core.
30CrNiMo8 1.6580 Quenched and tempered steel with high temperability and toughness thanks to the high chromium content. It can be quenched and tempered at high resistance values and offers hardness consistency and uniformity. Generally used for pinions and shafts. Has average machinability on tool machines. Can be nitrided at the quenched and tempered state to increase resistance to wear and the fatigue limit.
46CrB2 1.7075 46CrB2 Steel with a limited addition of chromium and boron, which provide greater temperability with respect to similar steels with carbon only (C45). It is not unified in any standard, but is used in the automobile industry and in other fields.
Kalite WNr. Açıklama Pdf
C22E
C22EPb
1.1151 Non-alloy steel with very low temperability, temperable only in water and used for simple and small pieces. Often used without the quenching and tempering treatment.
C30E
C30R
1.1178
1.1179
Non-alloy steel quenchable and temperable in water with higher carbon contents than C22E. Used for simple pieces of limited size.
C35E
C35R
C35Pb
1.1181
1.1180
Non-alloy steel quenchable and temperable in water, higher carbon content than the previous types. Widely used thanks to its slightly higher temperability.
C40
C40R
C40RPb
1.1186
1.1189
Non-alloy steel quenchable and temperable in water and oil, allows higher mechanical characteristics to be obtained. It is one of the most used steels in Europe.
C45E
C45R
C45RPb
1.1191
1.1201
Non-alloy steel, quenchable and temperable in water and oil. Pieces of a particular size with sufficiently transformed structures can be extracted. It is one of the most used steels in Europe.
C50E
C50RPb
1.1206 Non-alloy steel quenchable and temperable in oil, with high carbon levels, allows pieces with rather high hardness to be obtained. Also suitable for surface tempering.
C55E
C55
1.1203 The high carbon levels of this non-alloy quenched and tempered steel allow high hardness and transformed structures to be obtained even in pieces of considerable size. Often used for surface tempering.
Kalite WNr. Açıklama Pdf
41Cr4
41CrS4
1.7035
1.7039
A low-alloy steel with the addition of chromium only, it is primarily used in bolts for small- and medium-sized pieces.
36CrMn
36CrMn5Pb
  A chromium and manganese alloy steel, no longer present in the unified standards, it is widely used in the quenched and tempered state for pins and hubs of heavy equipment and more generally in the automotive field.
25CrMo4
25CrMoS4
25CrMoS4Pb
1.7218
1.7213
Alloy steel with chrome and molybdenum and a low carbon content; for this reason it is one of the few quenched and welded steels that can be welded (with some precautions) and it is used in gears and for small- and medium-sized pieces. The presence of molybdenum avoids the phenomenon of fragility by tempering.
30CrMo4   Steel similar to the previous one: the greater carbon content makes welding more difficult, but favors temperability.
34CrMo4
34CrMoS4
1.7220
1.7226
Steel with chromium and molybdenum, used in the production of average-sized pieces. At the quenched and tempered state it has good mechanical characteristics and does not suffer from embrittlement from tempering.
42CrMo4
42CrMoS4
1.7225
1.7227
The most widely used of the quenched and tempered steels. The excellent temperability and the absence of embrittlement fragility make this steel suitable for the production of a variety of pieces, also of medium-large size, with high mechanical characteristics.
50CrMo4 1.7228 Steel similar to the above, but with a higher carbon content. It is used for the same purposes, when a surface hardness obtained by induction tempering is also necessary.
39NiCrMo3
39NiCrMo3Pb
1.6510 A steel widely used in Italy, it is in any case included in the European standards. The addition of nickel in addition to chromium-molybdenum improves the performance of the pieces obtained, especially with regard to resistance to fatigue and vibrations.
34CrNiMo6 1.6582 This is the steel most commonly used in northern Europe when the addition of nickel is required by the severe use conditions. It has an elevated temperability thanks to the presence of significant levels of nickel and chromium: it is even suitable for the construction of large pieces that, at the quenched and tempered state, have well transformed structures down to the core.
30CrNiMo8 1.6580 Quenched and tempered steel with high temperability and toughness thanks to the high chromium content. It can be quenched and tempered at high resistance values and offers hardness consistency and uniformity. Generally used for pinions and shafts. Has average machinability on tool machines. Can be nitrided at the quenched and tempered state to increase resistance to wear and the fatigue limit.
46CrB2 1.7075 46CrB2 Steel with a limited addition of chromium and boron, which provide greater temperability with respect to similar steels with carbon only (C45). It is not unified in any standard, but is used in the automobile industry and in other fields.

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