ASTM B671 : 81(1999)e1

Standard Specification for Refined Iridium

Standard Details

1.1 This specification covers refined iridium as sponge and powder in two grades as follows:

1.1.1 Grade 99.80 -Iridium having a purity of 99.80%.

1.1.2 Grade 99.90 -Iridium having a purity of 99.90%.

Note-For the purposes of determining conformance with this specification, an observed value obtained from analysis shall be rounded to the nearest unit in the last right-hand place of figures used in expressing the limiting value, in accordance with the rounding method of Practice E29.

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

General Information

Status : Historical

Standard Type: Main

Document No: ASTM B671 : 81(1999)e1

Document Year: 1981

Pages: 2

Edition: e1

Section Volume:
02.04 Volume 02.04 Nonferrous Metals - Nickel, Titanium, Lead, Tin, Zinc, Zirconium, Precious, Reactive, Refractory Metals and Alloys: Materials for Thermostats, Electrical Heating and Resistance Contact, and Connectors