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Nickel Alloy Kovar 4J42

Nickel Alloy Kovar 4J42

Chemical composition 4J29 bar alloy C Mn Si P S Ni Cr Co Cu Mo Fe 4J29 ≤0.03 ≤0.50 ≤0.30 ≤0.020 ≤0.020 28.5~29.5 ≤0.20 16.8~17.8 ≤0.2 ≤0.2 balance Iron-nickel alloy is a series of fixed-expansion alloys which can be matched with soft glass and ceramics with different expansion coefficients in a...

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Chemical composition  4J29 bar


alloy C Mn Si P S Ni Cr Co Cu Mo Fe

4J29 ≤0.03 ≤0.50 ≤0.30 ≤0.020 ≤0.020 28.5~29.5 ≤0.20 16.8~17.8 ≤0.2 ≤0.2 balance


Iron-nickel alloy is a series of fixed-expansion alloys which can be matched with soft glass and ceramics with different expansion coefficients in a given temperature range by adjusting the nickel content. The expansion coefficient and the Curie point increase with increasing nickel content.

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