Minerals and Metals in Ancient India v1.c27.s3.t1.4

v1.c27.s3.t1.4

Hudson had concluded that the Koṇārka sample, having composition similar to that of the Delhi Iron Pillar, corroded more on account of the moist and salt-laden air of the Orissan sea-coast (1953: 499). The relative humidity of the air at Delhi seldom exceeds the critical value of 70 per cent. Ray (1956: 213) cited Hudson’s work and commented: “This should lay to rest all speculations regarding the alleged intrinsic superiority of the ancient iron, so far as its corrosion resistance is concerned”.