Carbon 0.20 max
Silicon 0.10 - 0.40
Manganese 0.80 / 1.40
Phos & Sulphur 0.040 max
Chromium 0.25 max
Molybdenum 0.10 max
Nickel 0.40 max
Copper 0.30 max
Niobium 0.01 - 0.06
Ni+Cr+Mo+cu = 0.80%
Supplied in various conditions.
Normalised, Normalised and Tempered - Tensile strength 430 - 550 N/mm2, Yield Strength 260 N/mm2 minimum, Elongation 19%, KV Impact 27 J minimum, limniting rulign section <=100 mm
Quenched and Tempered - Tensile strength 430 - 550 N/mm2, Yield Strength 245 N/mm2 minimum, Elongation 19%, KV Impact 27 J minimum, limniting rulign section >100 mm