... requirement. We have large quantity of goods in stock! DIN 1.7225/AISI 4140 Steel, Round bars, UT passed.DIN ... 1.7225/AISI 4140 Steel1)dia 8-650mm,length 1.6-6m 2)Tech:Hot rolled ... or forged 3)Surface:Black or machined 1.Chemical Composition C:0.42, Si:0.30, Mn:0.60, Cr ... :1.00, Mo:0.20, P≤0.025, S≤0.025 ...