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1.Dia: 16~800mm Length:3-5.8m 2.Technique:Forged 3.Peeled or Turned as required
4.Normalized, Annealed or Q&T service provided
5.Delivery 45 dyas
Alloy Round Steel bar AISI 4140
Material: | Steel Round Bar AISI 4140 |
Process: | EAF + LF + VD + /Hot rolled or Forged + Heat Treatment (optional) |
Diameter: | 12mm-1200mm |
Length: | 3-12m |
Heat treatment: | Normalized / Annealed / Quenched / tempered |
Delivery condition: | Hot rolled or Hot forged +Rough machined (black surface after Q/T)+ Turned (optional) |
Delivery time: | 45 days after advanced payment |
Payment: | T/T Or L/C |
Chemical composition (%)
Grade | C | Si | Mn | P≤ | S≤ | Cr | Mo | Ni≤ | Cu≤ |
SAE 4140 | 0.38-0.43 | 0.15-0.35 | 0.75-1.00 | 0.030 | 0.040 | 0.80-1.10 | 0.15-0.25 | 0.25 | 0.35 |
Application: Components of mediums & large cross section, requiring low tensile Strength, as well as heavy forging in the normalized condition for automatic engineering and gear & engine construction.