Choosing the right steel grade for precision components is critical in manufacturing. C45 and C35 steels are commonly used carbon steels, but they differ in properties and suitability for applications like forging and automotive parts.
This article compares C45 Steel vs C35 steel grades to help manufacturers and engineers select the ideal material for their precision components.
Overview of C45 and C35 Steel
Property | C45 Steel | C35 Steel |
Carbon Content | 0.42 – 0.50% | 0.32 – 0.40% |
Tensile Strength | 600 – 800 MPa | 500 – 650 MPa |
Hardness (HB) | 170 – 220 | 150 – 180 |
Machinability | Moderate | High |
Weldability | Moderate | Good |
Key Differences
- Carbon Content: C45 has higher carbon, leading to better hardness and tensile strength.
- Hardening Capability: C45 steel responds better to heat treatment and hardening.
- Machinability: C35 offers better machinability due to lower carbon content.
- Applications: C45 is preferred for more demanding components requiring strength; C35 is ideal for less critical parts.
Applications of C45 and C35 in Precision Components
- C45 Steel: Gears, shafts, axles, crankshafts, and machine parts requiring wear resistance and strength.
- C35 Steel: Automotive body components, fasteners, and less stressed forged parts.
Table: Comparison of C45 vs C35 for Forging and Automotive Use
Criteria | C45 Steel | C35 Steel |
Strength | Higher | Moderate |
Wear Resistance | Superior | Moderate |
Heat Treatment | Effective hardening | Limited hardening capability |
Cost | Slightly higher | More economical |
Precision Machining | Suitable for tighter tolerances | Easier machining |
Choosing the Right Steel Grade
- Consider load and stress requirements.
- Evaluate manufacturing processes like forging, heat treatment, and machining.
- Factor in cost constraints and required component lifespan.
- Consult with trusted suppliers like Dhand Steels to source certified C45 or C35 steel tailored for precision manufacturing.
Summary
C45 steel, with its higher carbon content and hardness, is better suited for precision components exposed to greater stresses, such as gears and shafts. C35 steel offers improved machinability and cost advantages for less demanding automotive parts. Understanding the specific requirements will help ensure optimal material selection and product performance.
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