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HSLA Steel I
Steel name: HSLA Steel I
Diagram No.: 2798
Type of diagram: TTP
Chemical composition in weight %: 0.062% C, 0.12% Si, 1.71% Mn, 0.016% P, 0.011% S, 0.02% Mo, 0.074% Nb, 0.025% Al, 0.0060% N
Steel group: Alloy steels
Note: Precipitation diagram. Carbide TTP During Deformation and Recrystallization. TTP diagram of precipitated Nb(C,N) in recrystallized austenite of base steel. Treatment: Two thermomechanical treatments were designed for the determination of TTP diagrams. (T1) Specimens were solution treated in a gas-fired furnace at 1260oC (2300oF) for 30 min and grain refined by successive hot-rolling passes at 1230, 1175 and 1095oC (2250, 2150 and 2000oF) where the total reduction in area was 30% for each pass. They were then cooled, using an atomizer jet of water (mist-jet), to the desired holding temperature. (T2) Specimens were hot rolled to 30% reduction at 980oC (1800oF) to investigate the effect of low finishing temperature, with mist-jet cooling both before and after. They were then isothermally treated in a salt bath for the required periods up to 1 hr and quenched into brine cooled by dry ice. See the diagram No. 2799.
Reference: Not shown in this demo version.
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Disclaimer: The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other puposes. There is no representation that the recipient of this literature will receive updated editions as the become available.