ASTM1045 quality carbon structural steel

Quality carbon structural steel: 1045

Executive Standard: ASTM A29/A29M-04

     ● Features and Scope: ASTM1045 is a high strength carbon-quality steel, hardenability due to poor general condition to normalizing the use of higher mechanical properties, the use of quenching and tempering treatment. ASTM1045 cold plastic deformation of the middle, annealing and normalizing machinability than quenched good. ASTM1045 for the manufacture of parts requiring high strength, such as gears, shafts, piston pins, etc., and discontinuity large machining, forgings, stampings and bolts, nuts, pipe connection.

     ● Chemical Composition:

     Carbon C: 0.43 ~ 0.50

     Si Si: 0.17 ~ 0.37

     Manganese Mn: 0.60 ~ 0.90

     Sulfur S: ≤ 0.050

     Phosphorus P: ≤ 0.040

     Chromium Cr: ≤ 0.25

     Ni-Ni: ≤ 0.25

     Copper Cu: ≤ 0.25

     ● reference to the corresponding steel: Chinese GB 45, Russia ГOCT 45, United States, AISI 1045, the British BS 060A42, 060A47, France NF C45, XC45, the German DIN C45, CK45, Japan, JIS S45C, Italy UNI C45, Belgium NBN C45-2, Sweden, SS 1672, Spain UNE C45K, international ISO683 / 1 C45, C45E4, C45M2

     ● Mechanical Properties: Tensile strength σb (MPa): ≥ 600 (61) yield strength σs (MPa): ≥ 355 (36) Elongation δ5 (%): ≥ 16 Reduction of area ψ (%): ≥ 40 impact power Akv (J): ≥ 39 impact toughness αkv (J/cm2): ≥ 49 (5) hardness: not heat-treated, ≤ 229HB; annealed steel, ≤ 197HB sample size: sample size is 25mm

     ● Heat treatment and microstructure specifications: standard heat treatment: normalizing, 850 ℃; quenching, 840 ℃; tempering, 600 ℃.

● 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.