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Normas ASTM – AENOR
ASTM F1684-99

ASTM F1684-99

Standard Specification for Iron-Nickel and Iron-Nickel-Cobalt Alloys for Low Thermal Expansion Applications

Fecha:
2017-08-16 /Historical
Superseeded by:
Scope:

1.1 This specification covers two iron-nickel alloys and one iron-nickel-cobalt alloy, for low thermal expansion applications. The two iron-nickel alloys, both containing nominally 36% nickel and 64% iron, with the conventional alloy designated by UNS No. K93603, and the free-machining alloy designated as UNS No. K93050. The iron-nickel-cobalt alloy, containing nominally 32% nickel, 5% cobalt and 63% iron, is designated by UNS No. K93500. This specification defines the following product forms for UNS No. K93603 and UNS No. K93500: wire, rod, bar, strip, sheet, and tubing. The free-machining alloy, UNS No. K93050, is defined for bar products only. Unless otherwise indicated, all articles apply to all three alloys.

1.2 The values stated in inch-pound units are to be regarded as the standard. SI values, shown in parentheses, are for information only.

Keywords:
Iron-nickel alloys; Iron-nickel-cobalt alloys; Low-expansion alloys; UNS K93050 (iron-nickel low-expansion alloy, Invar PC); UNS K93500 (iron-nickel low-expansion alloy, super Invar)
51,46
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