Influence of P on Properties of 13 Cr Stainless Steels
Studies on 13 Cr stainless steel-I
1961 Volume 47 Issue 1 Pages 38-43
Details
1961 Volume 47 Issue 1 Pages 38-43
To investigate the influence of P on properties of 13 Cr stainless steels, which were widely used for kitchen utensils, medical instruments, high-temperature duties and otheruses. The authors measured the transformation temperatures, the hardness change, the mechanical properties at room and elevated temperatures and studied the corrosion resistance to 40% boiling nitric acid and to 5% acetic acid at room temperature and boiling.
The results obtained were as follows:
(1) The Ac transformation temperatures were raised but the Ar beginning points were lowered by P addition.
(2) The as-annealed hardness of these steels and of cold-drawn materials were increased with P contents. The as quenchd hardness was subjected to the influence of quenching temperatures but was not affected by P content. The resistance to softening by tempering were enhanced by P addition
(3) The tensile and yield strengths at room and elevated temperatures were increased by P addition, but elongation and reduction of area at room temperature were slightly degreased. The impact strength were lowered with P content.
(4) The corrosion resistance to 40% boiling nitric acid was enhanced by less than 0.05% P, but the resi stance to 5% boiling acetic acid was decreased by P addition.
