Japanese S55C medium carbon steel
   Japanese high-quality supply of S55C carbon steel mold
     Standard: JIS
     Welcome to the new and old customers call to fax consultation order! The company is scheduled to serve you!
     With a single person in charge: Mr. Lin Mu Mobile: 13433000657
     0769 -33,260,083 landline business QQ: 1737415153
     Fax 769 -85030218
     ● Features and application:
     Properties and Applications: High-strength quenched and tempered carbon steel, has a certain plasticity and toughness, high strength, good processability, the use of quenching get good mechanical properties, but lower weldability , still welding, but welding weldment should be preheated before and after the welding process should be returned to in addition to welding stress; for higher strength and wear resistance or flexibility, dynamic load and impact load is not parts such as gears, rims, flat springs, crankshafts, etc.
     ● Chemical Composition:
     Carbon C: 0.52 ~ 0.60 ¨
     Si Si: 0.17 ~ 0.37
     Manganese Mn: 0.50 ~ 0.80
     Sulfur S: ≤ 0.035
     Phosphorus P: ≤ 0.035
     Chromium Cr: ≤ 0.25
     Ni-Ni: ≤ 0.25
     Copper Cu: ≤ 0.25
     ● Mechanical Properties:
     Tensile strength σb (MPa): ≥ 645 (66)
     Yield strength σs (MPa): ≥ 380 (39)
     Elongation δ5 (%): ≥ 13
     Reduction of area ψ (%): ≥ 35
     Hardness: no heat treatment, ≤ 255HB; annealed steel, ≤ 217HB
     Sample Size: Sample size is 25mm
     ● Heat treatment and microstructure specifications:
     Heat treatment specifications: normalizing, 820 ℃; quenching, 820 ℃; tempering, 600 ℃.
     Microstructure: sorbite.
     ● Delivery status: no heat treatment or heat treatment (annealing, normalizing or tempering) the status of delivery. Demands heat treatment delivery should be specified in the contract, not indicated by no heat treatment delivery.