Claims
- 1. A non-magnetic, crevice corrosion resistant steel retaining ring for a generator consisting essentially of, in terms of weight percentage, 0.4% or less of carbon, above 0.3% but up to 1% of nitrogen, 2% or less of silicon, 12 to 20% of chromium, 13 to 25% of manganese, the balance consisting substantially of iron, the total content of the chromium and manganese being at least 30%, said retaining ring manufactured by cold working and having a magnetic permeability less than 1.1.
- 2. A retaining ring for a generator according to claim 1, wherein said retaining ring further comprises 5% by weight or less of molybdenum.
- 3. A retaining ring for a generator according to claim 1, wherein said corrosion-resistant non-magnetic steel comprises, in terms of weight percentage, 0.3% or less of carbon, 0.4 to 0.8% of nitrogen, 1.5% or less of silicon, 13 to 18% of chromium, 15 to 24% of manganese and the balance consisting substantially of iron, the total content of the chromium and manganese being at least 32%.
- 4. A retaining ring for a generator according to claim 3, wherein the content of said molybdenum is 1.0 to 2.5% by weight.
- 5. A retaining ring for a generator according to claim 2, wherein said corrosion-resistant non-magnetic steel comprises, in terms of weight percentage, 0.3% or less of carbon, 0.4 to 0.8% of nitrogen, 1.5% or less of silicon, 13 to 18% of chromium, 15 to 24% of manganese and the balance consisting substantially of iron, the total content of the chromium and manganese being at least 32%.
- 6. A retaining ring for a generator according to claim 5, wherein the content of said molybdenum is 1.0 to 2.5% by weight.
Priority Claims (2)
Number |
Date |
Country |
Kind |
56-39478 |
Mar 1981 |
JPX |
|
56-39481 |
Mar 1981 |
JPX |
|
Parent Case Info
This application is a continuation of application Ser. No. 359,245, filed 3/18/82, now abandoned.
US Referenced Citations (5)
Foreign Referenced Citations (1)
Number |
Date |
Country |
3053513 |
May 1978 |
JPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
359245 |
Mar 1982 |
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