1. High Quanlity 2. Various Type and Specification 3. Competetive Price 4. Perfect Service 5. On Time Delivery
1.better quality,Preshipment quality insepction 2.UT test standard,MTC send 3.Provide 3rd provide 3rd party inspections
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.
steel sae 4140
