DIN 55 Si 7 Structural and constructional steels
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DIN 55 Si 7 Chemical Composition
Hot rolled steels for springs suitable for quenching and tempering - Technical delivery conditions, DIN 17221 / 1955
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DIN 55 Si 7 Physical Properties
Temperature
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DIN 55 Si 7 Heat Treatments
- Hot forming to forging at 1050-850°C; Hot forming to springs at 900-830°C;
Annealing at 640-680°C;
Normalizing at 830-860°C;
Hardening and tempering: hardening in oil at 830-860°C and tempering at 470-540°C - Soft annealing: 650-690°C; Hardening (quenching in oil): 830-860°C; Tempering: 300-500°C
DIN 55 Si 7 Mechanical Properties
Temperature
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113 Cross References
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10 Composition
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12 Mechanical Properties
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3 Physical Properties
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9 Heat Treatment
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9 Metallography
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- Machinability
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- Stress-Strain
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- Formability
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- Fatigue
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- Fracture
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- Creep
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1 Joints
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- Coatings
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- Dimensions
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- Tribology
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- Corrosion
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- Ageing
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- Weatherability
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- Irradiation
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