✍ Scribed by R.H.O.
No coin nor oath required. For personal study only.
New Timken Steel--" Silmo." (Heat Treating and Forging, Vol. XXII, No. 5.) The Timken Steel and Tube Co. has just announced a new steel designated as "Silmo," especially designed for applications where an economical combination of high temperature, strength and oxidation resistance is required. In the temperature range of lOOO-12oo deg. F. this steel has about twice the strength of carbon steel and its oxidation resistance compares favorably with that of 4-6 per cent. Cr-Mo steel. This new steel may be used to replace carbon steel where greater safety is required and as a substitute for the standard carbon molybdenum steel where oxidizing conditions are encountered. Indicated uses for it lie in the field of cracking furnace tubes, pipe still heater tubes, high pressure boiler and superheater tubes, and tubing used in the manufacture of air heating equipment. R. H. O.
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