C45 supply alloy steel rods, C45 alloy steel rods, the C45 alloy steel bars, C45 alloy steel bars

No. 35 steel quality carbon structural steel (GB/T699-1999) good plasticity and strength, better process performance, welding performance is acceptable, mostly in normalizing the state and quenched and tempered condition. Uses 35 steel is widely used in the manufacture of a variety of forging and hot pressing pieces, cold-drawn and upset steel, seamless steel pipe, machinery manufacturing parts, such as the crankshaft, shaft, shaft pins, levers, connecting rods, beams, sleeve , wheels, washers, screws, nuts, motorcycle racks. . Heat treatment regime and metallurgical structure: heat treatment specifications: normalizing, 870 ° C; quenching, 850 ° C; tempered, 600 ° C. Microstructure: ferrite + pearlite. Delivery status: to heat treatment or heat treatment (annealing, normalizing or high-temperature tempering) state Delivery. Requiring treatment delivery should be specified in the contract, not indicated without heat treatment delivery. Chemical composition Carbon C: 0.32 ~ 0.40 Silicon Si: 0.17 ~~ 0.37 Manganese Mn: 0.50 ~~ 0.80 Sulfur S: ≤ 0.035 Phosphorus P: ≤ 0.035 Chromium Cr: ≤ 0.25 Nickel Ni: ≤ 0.25 Copper Cu: ≤ 0.25 Mechanical Properties Tensile Strength σb (MPa): ≥ 530 (54) Yield strength σs (MPa): ≥ 315 (32) Elongation δ5 (%): ≥ 20 Reduction of area ψ (%): ≥ 45 impact energy Akv (J): ≥ 55 impact toughness αkv (J / cm 2): ≥ 69 (7) hardness: no heat treatment ≤ 197HB specimen size: specimen size the 25mm 45 steel quality carbon structural steel, its strength is 61, HRC 48 -55, machinery used more; 35, is also a high-quality carbon structural steel, but its strength was only 54, HRC is 38-45. Spark of difference between them can identify from the spark, low carbon content, the tail drooping slightly darker color when gunpoint Last flowers, the flowers are small, Mans line coarser. No. 45, then the tail straight cutting edge streamline bifurcation launched a larger force, spend more. 35 Steel 45 Steel containing carbon than, of course, is 45 steel rather hard. Anchor bolts do not need such a good steel is very easy to use with ordinary carbon steel Q235.