GB456743A - Improvements in or relating to precious metal alloys - Google Patents
Improvements in or relating to precious metal alloysInfo
- Publication number
- GB456743A GB456743A GB1401735A GB1401735A GB456743A GB 456743 A GB456743 A GB 456743A GB 1401735 A GB1401735 A GB 1401735A GB 1401735 A GB1401735 A GB 1401735A GB 456743 A GB456743 A GB 456743A
- Authority
- GB
- United Kingdom
- Prior art keywords
- quenching
- palladium
- gold
- per cent
- rolling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/02—Alloys based on gold
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Adornments (AREA)
- Manufacture Of Switches (AREA)
Abstract
Alloys containing 50-75 per cent of gold, 40-15 of platinum and 5-25 of palladium, more than 5 of palladium being present when there is more than 65 of gold, are hardened by annealing them at a temperature above 1005 DEG C. but below their melting point and then either quenching and reheating to 500-750 DEG C. for a time sufficient to produce the desired hardness, e.g. 1/4 to 1 hour, the subsequent quenching beng followed, if desired, by cold working or cooling slowly to a temperature within the range 500-750 DEG C. and then quenching. The hardening may be carried out by rolling an ingot, subjecting it to a prolonged homogenizing annealing, e.g. for 1-2 hours, then to short anneals, e.g. for 1-5 minutes at intervals in the rolling process, each anneal being followed by quenching and then to a final heating at 500-750 DEG C. for a time sufficient to produce the desired hardness, e.g. 1- 1/2 hour. The amount of reduction in thickness produced by the rolling is from 20 to 90 per cent. In an example, an alloy contains 70 per cent of gold, 20 of platinum and 10 of palladium. Specification 361,893 is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1401735A GB456743A (en) | 1935-05-13 | 1935-05-13 | Improvements in or relating to precious metal alloys |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1401735A GB456743A (en) | 1935-05-13 | 1935-05-13 | Improvements in or relating to precious metal alloys |
Publications (1)
Publication Number | Publication Date |
---|---|
GB456743A true GB456743A (en) | 1936-11-13 |
Family
ID=10033469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1401735A Expired GB456743A (en) | 1935-05-13 | 1935-05-13 | Improvements in or relating to precious metal alloys |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB456743A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3085797A4 (en) * | 2013-12-20 | 2017-05-24 | Tanaka Kikinzoku Kogyo K.K. | Alloy for medical use, and method for producing same |
-
1935
- 1935-05-13 GB GB1401735A patent/GB456743A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3085797A4 (en) * | 2013-12-20 | 2017-05-24 | Tanaka Kikinzoku Kogyo K.K. | Alloy for medical use, and method for producing same |
US10883162B2 (en) | 2013-12-20 | 2021-01-05 | Tanaka Kikinzoku Kogyo K.K. | Alloy for medical use, and method for producing same |
US11345986B2 (en) | 2013-12-20 | 2022-05-31 | Tanaka Kikinzoku Kogyo K.K. | Alloy for medical use, and method for producing same |
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