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440C JAPAN :
The high quality stainless steel made by Japaness Aichi Steel Corp. contains chrome up to 16-18％, It was firstly applied to surgical bistoury and shipping industry , which has good quality in corroding resistance , rust resistance and toughness . Nowadays, it is more widely used for hand-made knife and high-quality barbor scissor. The content of carbon is approximately 1％(440 series includes A, B, C, and F grade; C grade and F grade contains most carbon, while A grade and B grade less.)。 The hardness is up to HRc58-60 after heat treatment.
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