New optical polishing pad

• Publisher: Elsevier Science
• Year: 1963
• Tongue: English
• Weight: 67 KB
• Volume: 275
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/0016-0032(63)90650-1

✦ Synopsis

while the elongation remains high at 25 per cent. After exposure to liquid nitrogen for 2550 hours, the alloy showed no loss in ductility.

To be designated as Type D-2M austenitic ductile iron, the new alloy is composed of 21 per cent minimum nickel; 3.75 per cent minimum manganese; 0.5 per cent maximum chromium; 2.0 to 2.5 per cent silicon; and 2.5 to 2.9 per cent total carbon content.

United States Patent No. 3055755, covering this invention, has recently been issued to William K. Abbott and Robert D. Schelleng of Inco's Development and

Research Department: Foundaries licensed by International Nickel to produce other grades of austenitic ductile iron are also licensed to produce the new alloy.