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40Cr Spring Steel

40Cr is the most commonly used alloy structural steel, with higher tensile strength, yield strength, and hardenability than 40 steel, but limited weldability and a tendency to form cracks. Suitable for more important quenched and tempered parts, such as parts working under alternating loads, medium speed and medium load parts. After surface quenching, it can be used as parts with high load and wear resistance without significant impact, such as gears, sleeves, shafts, crankshafts, pins, etc.
Availability:
CSiMnS/PMoCrNiCu
0.37~0.440.17~0.370.50~0.80≤0.035≤0.100.80~1.10≤0.30≤0.25


Production process

Medium carbon quenched and tempered steel, cold heading die steel. This steel is moderately priced, easy to process, and can achieve certain toughness, plasticity, and wear resistance after appropriate heat treatment. Normalization can promote tissue refinement, approach equilibrium state, and improve the cutting performance of the blank. Tempering at a temperature of 550~570 ℃ results in the best comprehensive mechanical properties of the steel. The hardenability of this steel is higher than that of 45 steel, making it suitable for surface hardening treatments such as high-frequency quenching and flame quenching.


Application examples

1. Automotive field

2. Ship domain

3. Petrochemical industry

4. Aerospace field


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  • Building #32, No.288 Xinzhuan Road, Shanghai, China
  • E-email:
    inquiry-carbon@ninesteel-cs.com
  • Call us:
    +86-21-67890007
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