| 摘要 |
1,195,657. Stainless steels. PILAO ACOS E REFINADORES LIMITADA. Nov.22, 1968 [Nov. 23, 1967], No. 55537/68. Heading C7A. [Also in Divisions B2 and B3] A stainless steel alloy, for use in making the blades of a conical or a disc set for a pulp refining machine (see Headings B2A, B3A), comprises 17-19% Cr; 0À07% C; 0À07% P; 7-9% Ni; 1% Mn; 0À03% S; 2-3% Cu; and 1% Si. Other impurities of an inert nature and not affecting the properties of the alloy may also be present. |
