Please let us know the Chemical and Mechanical Properties of ST 35 Bk?
St 35 = W.Nr. 1.0308 Chemical composition (maximal values in %) C = 0.18, Si = 0.35, Mn = 0.40, P = 0.050, S = 0.050, N = 0.007* Condition of supply BK = Cold-finished/hard (cold-finished as-drawn) No heat treatment after the last cold-forming process. The tubes therefore have only low deformability. Mechanical properties at room temperature Tensile strength (Rm N/mm2 min.) = 440 Breaking elongation (A5 % min.) = 6 * Depending on P-content N up to max.