The Max Hardness For 4140 Round Steel Rod

 4140 Round Steel Rod is a Chromium-Molybdenum through-hardening steel rod of medium hardenability. It is a general purpose high-tensile steel with medium strength level and good impact properties.

Hardness is another key mechanical property of 4140 steel affected by temperature. Typical hardness of hot rolled 4140 round steel bar is about 28-32 HRC at room temperature. However, as the temperature increases, the hardness of the steel decreases. At 200°C the hardness drops to about 25-28 HRC and at 400°C to about 22-25 HRC. If by Induction hardened , 4140 round steel bar can be surface hardened to 58HRC.

Advantages Of Our 4140 Round Steel Rod and Chrome Rod

  1. Precision material parts strictly according to customer&request drawing,packing and quality request
    2.Tolerance of 4140 chrome rod: can be kept in +/-0.01mm
    3.The most advanced inspector to ensure the quality
    4.Experienced technology engineers and well trained workers
    5.Fast and timely delivery. Speedily &professional service
    6.Give customer professional suggestion while in the process of customer designing to save costs

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