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Graphitic Superten
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Superten is a high carbon, high alloy steel which is given a special multi-stage heat treatment in order to develop the combination of hardness, toughness and wear resistance required for any particular application.
The structure produced consists of well broken up and dispersed carbides in a matrix of bainite and pearlite. The high hardenability means that Superten rolls show no significant reduction in hardness with depth, even in larger diameter rolls.
The high carbide content and tough, hard matrix make Superten rolls particularly suitable for section rolling. Abrasive wear is significantly reduced and surface finish remains very good for the duration of each mounting. Experience in many mills has shown that Superten rolls give substantially higher outputs than conventional rolls.
They also have excellent resistance to thermal fatigue and thus are very suitable as roughing rolls for strip and plate.
Superten rolls can be supplied with a controlled amount of well dispersed graphite in their microstructure. This graphite will improve firecrack resistance and the graphitic quality is recommended when adverse thermal conditions are likely to be met.
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Applications
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| Product |
Type of Mill |
Position |
| Medium Section |
2 & 3 High |
Intermediary & Finishing |
| Heavy Section |
2 & 3 High |
Finishing |
| Plate & Strip |
2 & 4 High |
Roughing |
| Beam |
Universal |
Horizontal |
| Tube |
Pilger |
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| Medium & Small Section |
Cogging |
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Typical Mechanical Properties
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Typical Hardness Gradient
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Micrograph x 100
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Typical Analysis
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| Code |
Leeb E |
Shore C |
C |
Si |
Mn |
Ni |
Cr |
Mo |
| GST15G |
590-680 |
50-65 |
1.0/2.0 |
1.4/2.0 |
1.0/2.0 |
1.0/2.0 |
1.0/2.0 |
0.3/0.8 |
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The Davy Roll Company Limited
Registered in England, Registration No. 162966, VAT registration 172 3848 50 501.
Registered Office: PO Box 21, Coulthards Lane, Close Works, Gateshead, Tyne and Wear, NE8 3DX.
The Davy Roll Company Limited is a member of the Union Electric Steel Corporation group of companies.
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