| 摘要 |
The invention concerns a non-magnetic austenitic stainless steel for use at very low temperature and resistant to neutrons, whereof the chemical composition comprises, by weight: 17 % </= Cr </=19 %; 12 % </= Ni </= 15 %; 2.5 % </=Mo </=4 %; 6 % </= Mn </=8 %; 0.1 % </= N </= 0.3 %; C </= 0.3 %; Si </= 1.5 %; optionally boron in contents not more than 0.005 %; the rest being iron and impurities resulting from preparation. The invention also concerns the use of said steel for manufacture in particular by moulding of a component of a device producing thermonuclear energy, operating at a temperature less than 7K. The invention also concerns the resulting component.
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