Shenhua Precision Light Pipe provides: High-strength 45# precision seamless pipe has become the most commonly used processing material in steel due to its good processing performance and multi-directional processing technology. Is called in GB, JIS is called: S45C, ASTM is called 1045, 080M46, DIN is called: C45. Domestic often called 45 steel, also called "oil steel." In general, the spot market is hot rolled. Cold rolling specifications between 1.0~4.0mm. 45 # precision seamless tube, refers to the carbon content of this material, carbon content of about 0.45%. Tensile strength: not less than 600Mpa Yield strength: not less than 355Mpa Elongation: 16% Shrinkage: 40% Impact work: 39J Hardness of steel delivery status: Not heat treated: no more than 229HBS Annealed steel: no more than 197HBS. Site Keywords: precision steel tubes, precision bright tubes, precision special steel