Carbon Alloy Steel Round Bar

Description ::
We are instrumental in offering our clients Carbon Steel Round Bars that are fabricated at par with international quality standards. Widely used across various industries, these bars are highly demanded in different parts of the world. Our clients can avail these bars from us in different dimensions and sizes as per their demand and requirement. These steel bars adhere to the following standards: 

• CK45
• EN8d
• EN9
• MS
• EN19
• EN24
• Key Specifications/Special Features:
  • Steel round bar
  • Material: SCM420, SCM415, 20Mn-65Mn, 15CrMo-42CrMo, 20Mn2-40Mn
  • Size: 20-100mm, 100-800mm
  • Length: 3-6m
  • Standard: JIS, GB, ASTM
  • Delivery condition: rough turned+quenching and tempering

  41Cr4/40Cr/ASTM5140/SCr440 Hot Rolled Alloy Steel Round Bars

  Key Specifications/Special Features:
  • Material: hot rolled alloy steel
  • Steel grades: 41Cr4, ASTM5140, SCR440 and 40Cr
  • Technical conditions: GB/T3077-1999 (China) and ASTM A29/A29M-04
  • Length: 3 to 6m
  • Size: 12 to 800mm

  GB 42CrMo Alloy Steel Bars with Higher Intensity, Good Fatigue Strength and Better Hardenability

  ASTM 4140

  Key Specifications/Special Features:
  • GB 42CrMo chemical composition:
    • C: 0.38 to 0.45
    • Si: 0.17 to 0.37
    • Mn: 0.50 to 0.80
    • S: ≤0.035
    • P: ≤0.035
    • Cr: 0.90 to 1.20
    • Ni: ≤0.030
    • Cu: ≤0.030
    • Mo: 0.15 to 0.25
  • Technique: forged
  • GB 42CrMo mechanical property:
    • Tensile strength σb: ≥1,080 (110)MPa
    • Yield strength σs: ≥930 (95)MPa
    • Elongation δ5: ≥12%
    • Hardness: ≤217HB
  • Sizes:
    • Diameter: 12 to 200mm
    • Hot rolling: 200 to 800mm
  • Flat bar:
    • Thickness: 10 to 100mm
    • Width: 50 to 500mm
  • Surface treatment: black, coated or galvanized, no flaw and burr or rust
  • Process: EAF + LF + VD + forge
  • Delivery condition: hot rolled, black, annealing and hardness: HBS=160 to 210, or hot rolled/forged + rough machined (black surface after Q/T) + turned (optional)
  • UT: to SEP 1924 C/c and D/d or according to customer’s request
  • Futures:
    • Compared with 35CrMo, the 42CrMo has higher intensity and better hardenability
    • Good fatigue strength and impact resistance
    • Good low temperature impact toughness
    • No temper brittleness
    • Usually used after tempered
  • Application:
    • Often applied for making important machinery parts, such as bearing, gear, connecting rod, transmission gear, supercharger gear, engine cylinder, spring and rotary shouldered connections (1,200 to 2,000mm) for petroleum industry and jar knocker
    • Substitute of hardened and tempered steel with higher chromium composition