Np. Lyakishev et al., STRUCTURE AND PROPERTIES OF HOT-ROLLED STOCK IN-LINE STRENGTHENED IN 2000 CONTINUOUS WIDE-STRIP MILL, Russian metallurgy. Metally, (2), 1993, pp. 82-88
Coned sheet of St3sp low-carbon steel with sigma(0.2)=350-375 MPa (str
ength classes C345 and C375) in-line strengthened in 2000 continuous w
ide-strip mill is essentially equivalent to rolled low-alloy steel wit
h impact strength guaranteed at -70 degrees C. Recommended for strengt
hening are type St3 low-carbon steels containing less than or equal to
0.035% P and less than or equal to 0.040% S.