main element of high speed steel option a) tungsten b )chromium c) vanadium d) Nikel

main element of high speed steel option a) tungsten b )chromium c) vanadium d) Nikel

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18 tungustan 2 chromium 1 venedium

3
  • 18%tungsten 4%chromium 1%venadium

group a iti trades
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group a iti trades