Spheroidal Cast Iron

Cast Iron with Nodular or Spheroidal Graphite present.

Pearlitic SG

Pearlitic Chill rolls are essentially an indefinite chill-type material. The microstructure constitutes nodular graphite and carbides in a pearlitic matrix. The resistance to fire-cracking is best when the softer grades are used. Its good hardness penetration makes it suitable for small to medium sections and billets although it can also give good results when rolling flat products.

Pearlitic Chill rolls are essentially an indefinite chill-type material. The microstructure constitutes nodular graphite and carbides in a pearlitic matrix. The resistance to fire-cracking is best when the softer grades are 

used. Its good hardness penetration makes it suitable for small to medium sections and billets although it can also give good results when rolling flat products.

HS Range C Mn Si Ni Cr Mo UTS Kgf/mm²
40 – 50
Min
3.0
0.3
1.5
1.5
0.2
0.2
40
Max
3.5
0.6
2.3
2.0
0.5
0.4
60
50 – 60
Min
3.0
0.3
1.5
1.5
0.2
0.2
40
Max
3.6
0.6
2.3
2.2
0.5
0.4
60
60 – 70
Min
3.1
0.5
1.2
1.5
0.3
0.2
40
Max
3.6
1.0
1.7
2.4
0.7
0.6
60
70 – 80
Min
3.1
0.5
1.2
1.5
0.3
0.3
40
Max
3.6
1.0
1.7
2.8
0.8
0.6
60

Bainitic Acicular SG

Bainitic Acicular SG has nodular graphite and carbides in an acicular (needle-like) bainitic matrix with increased carbide content and some martensite. This material has superior wear resistance and an excellent surface finish ideal for intermediate and finishing applications for rod and bar, sections and flats.

Bainitic Acicular SG has nodular graphite and carbides in an acicular (needle-like) bainitic matrix with increased carbide content and some martensite. This material has superior wear resistance and an excellent surface finish 

ideal for intermediate and finishing applications for rod and bar, sections and flats.

Material HS Range C Mn Si Ni Cr Mo UTS Kgf/mm²
Bainitic Acicular
40 – 50
Min
3.0
0.3
1.6
1.5
0.2
0.4
60
Max
3.5
0.6
2.3
3.0
0.5
0.9
80
Bainitic Acicular
50 – 60
Min
3.0
0.3
1.4
1.6
0.2
0.4
55
Max
3.5
0.7
2.3
3.0
0.5
0.9
75
Bainitic Acicular
60 – 70
Min
3.1
0.5
1.2
2.0
0.3
0.4
50
Max
3.6
0.8
2.0
3.0
0.8
0.9
70
Sp. Bainitic Acicular
60 – 70
Min
3.1
0.5
1.2
3.0
0.4
0.6
50
Max
3.6
0.8
2.0
4.0
0.6
0.9
70
Sp. Bainitic Acicular
70 – 80
min
3.1
0.5
1.2
3.5
0.4
0.6
50
Max
3.6
0.8
2.0
4.0
0.6
1.0
70

Deep Groove SG

Deep Groove SG has nodular graphite. This material has superior wear resistance at high depth ideal for large sections with deep grooves or seamless tubes.
HS Range C Mn Si Ni Cr Mo UTS Kgf/mm²
60 – 70
Min
3.0
0.3
1.5
2.0
0.6
0.3
60
Max
3.5
0.6
2.2
3.0
0.9
0.5
80
70 – 80
Min
3.0
0.3
1.5
2.2
0.6
0.3
55
Max
3.5
0.7
2.0
3.0
0.9
0.5
75

Ferritic SG

The microstructure of Ferritic Bainite SG ranges from mostly pearlitic to bainitic with graphite nodules that are surrounded by a layer of ferrite giving a characteristic “bull’s eye” effect. No significant hardness drop; excellent hardness penetration. Highly fire-crack resistant and suitable for severe thermal duty in Breakdown and Roughing applications.

The microstructure of Ferritic Bainite SG ranges from mostly pearlitic to bainitic with graphite nodules that are surrounded by a layer of ferrite giving a characteristic “bull’s eye” effect. No significant hardness drop; excellent 

 hardness penetration. Highly fire-crack resistant and suitable for severe thermal duty in Breakdown and Roughing applications.

HS Range C Mn Si Ni Cr Mo UTS Kgf/mm²
40 – 55
Min
2.8
0.4
1.5
1.5
0.3
0.5
45
Max
3.5
0.65
2.5
2.8
<= 2
1
70

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Deem Roll Tech Limited is one of the leading manufacturers of steel and alloy rolls in India, which constitute the building blocks of the iron and steel rolling mill industry.

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Head Office

  • C-1212, Swati Trinity, Nr. Applewoods Township, S. P. Ring Rd., Ahmedabad, Gujarat 380054
  • +91 79 4009 9474
  • +91 79 4002 7481
  • +91 99251 96196

Deem Roll Tech Limited is one of the leading manufacturers of steel and alloy rolls in India,
which constitute the building blocks of the iron and steel rolling mill industry.

Linkedin Youtube

Useful Links

Head Office

  • C-1212, Swati Trinity, Nr. Applewoods Township, S. P. Ring Rd., Ahmedabad, Gujarat 380054
  • +91 79 4009 9474
  • +91 99981 32220

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