Premium ASTM F1684 4J36 Invar Alloy - Ultra-Low Thermal Expansion
High-precision iron-nickel alloy wire/rods/bar with 36% nickel content (UNS K93600), meeting strict ASTM F1684 standards for exceptional dimensional stability. Ideal for precision instruments, aerospace components, and scientific equipment requiring minimal thermal expansion.
Superior cold-working properties enable flawless spring wire formation, while vacuum-melted material ensures consistent welding rod performance. Machinable bars maintain structural integrity across extreme temperature ranges (-200°C to +200°C).
Essential for laser equipment, cryogenic engineering, and watchmaking. Bulk orders available for industrial manufacturers seeking cost-effective solutions without compromising metallurgical quality. Custom diameters and lengths upon request.
























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High quality ASTM F1684 iron 4J36 UNS K93600 invar 36 nickel alloy spring wire/welding rods/bar
$6.6$12.78-48.36%
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