Key to Metals AG (Datenlieferant)
4340 (SAE)
Weitere Informationen finden Sie hier.
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Einsatzbeispiele
- Primarily for cast parts requiring heat treatment to minimum yield strengths up to 180,000 psi (1240 MPa).
- These products have been used typically for heat treated parts requiring good tensile and fatigue strengths in combination with good ductility, but usage is not limited to such applications. The product may be through-hardened to tensile strength ranges of 260 to 280 ksi (1793 to 1931 MPa) in nominal section thicknesses of 1.5 inches (38 mm) and under and 180 to 220 ksi (1241 to 1517 MPa) in nominal section thicknesses of 3 inches (76 mm) and under
- These products have been used typically for parts required to meet stringent magnetic particle inspection criteria, having sections 89 mm (3.5 inches) and under in nominal thickness at time of heat treatment, and requiring a through-hardening steel capable of developing a minimum hardness of 40 HRC when properly hardened and tempered and also for parts of greater thickness, but requiring proportionately lower hardness, but usage is not limited to such applications.
- These products have been used typically for parts requiring a through-hardening capability up to 3.5 inches (89 mm) in nominal thickness and subject to rigid magnetic particle inspection standards, but usage is not limited to such applications.
- These products have been used typically for parts, 3.5 inches (89 mm) and under in nominal thickness at time of heat treatment, requiring a through-hardening steel capable of developing a minimum hardness of 40 HRC when properly hardened and tempered and also for parts of greater thickness, but requiring proportionately lower hardness. Usage is not limited to such applications.
- These products have been used typically for parts, 89 mm and under in nominal thickness at time of heat treatment, requiring a through-hardening steel capable of developing a min. hardness of 40 HRC when properly hardened and tempered and also for parts of greater thickness requiring proportionately lower hardness, but usage is not limited to such applications.
- Used typically for heat treated parts requiring good tensile and fatigue strengths in combination with good ductility, but usage is not limited to such applications. The product may be through-hardened to tensile strength ranges of 1793 - 1931 MPa in nominal section thickness of 38 mm and under and 1241 - 1517 MPa in nominal section thicknesses of 76 mm and under.
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Physikalische Eigenschaften
| Name | Wert | Messverfahren und -bedingungen |
|---|---|---|
| Dichte | 7.833 kg/dm³ | |
| Mechanische Eigenschaften | ||
| 0,2-%-Streckgrenze bei Zugbeanspruchung | > 934.2 MPa | |
| Schlagenergie | 14.2 – 52.7 J | |
| Schubmodul | 76 GPa | |
| Zug-Elastizitätsmodul | 200 GPa | |
| Zugdehnung beim Bruch | > 4 % | |
| Zugfestigkeit | 862 – 1931 MPa | |
| Elektrische und magnetische Eigenschaften | ||
| spezifischer elektrischer Widerstand | 0.31 Ω∙mm²/m | |
| Thermische Eigenschaften | ||
| Wärmeleitfähigkeit | 34.918 – 35.812 W/(m∙°C) | |
Daten bereitgestellt von
Key to Metals AG
IBDT Ingenieurbüro Daniel Trost
+49 176 703 22 119
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