In modern manufacturing, the demand for materials that combine strength, durability, and machinability continues to grow. Among alloy steels, SCM435 has become a leading choice for both automotive components and mechanical equipment manufacturing due to its balanced mechanical performance and cost efficiency.
Chemical Composition of SCM435
| Element | Content (%) | Function |
|---|---|---|
| C (Carbon) | 0.33–0.38 | Provides hardness and tensile strength |
| Si (Silicon) | 0.15–0.35 | Improves elasticity and resistance to deformation |
| Mn (Manganese) | 0.60–0.85 | Enhances toughness and machinability |
| Cr (Chromium) | 0.90–1.20 | Increases wear resistance and hardenability |
| Mo (Molybdenum) | 0.15–0.30 | Improves heat resistance and fatigue strength |
| P (Phosphorus) | ≤ 0.03 | Controlled to maintain purity |
| S (Sulfur) | ≤ 0.03 | Improves machinability in controlled amounts |
This optimized composition ensures that SCM435 steel maintains a perfect balance between strength and ductility, making it suitable for components exposed to high stress or continuous vibration.
Mechanical Properties of SCM435
| Property | Typical Value |
|---|---|
| Tensile Strength (MPa) | 930–1080 |
| Yield Strength (MPa) | 785–930 |
| Hardness (HRC) | 28–35 (after tempering) |
| Elongation (%) | 12–15 |
| Impact Toughness (J/cm²) | ≥ 60 |
These properties give SCM435 alloy steel excellent load-bearing capacity and toughness, even in high-impact applications such as automotive suspensions, gears, and connecting rods.
Key Advantages of SCM435 Alloy Steel
1. Excellent Strength and Toughness
SCM435 exhibits superior tensile strength and impact resistance compared to ordinary carbon steels, allowing it to perform well under extreme stress conditions.
2. High Fatigue Resistance
Due to its chromium and molybdenum alloying, SCM435 maintains structural integrity even after prolonged cyclic loading—ideal for shafts, bolts, and drive components.
3. Great Machinability
The balanced composition allows efficient cutting and forming, making SCM435 suitable for both CNC machining and cold drawing processes.
4. Heat Treatment Flexibility
It can be quenched and tempered to achieve customized hardness levels, enabling manufacturers to adapt its performance to specific product requirements.
Typical Applications of SCM435 Alloy Steel
1. Automotive Industry
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Used in door lock bolts, axles, gear shafts, and connecting rods due to its high strength and wear resistance.
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The 180° bendability without cracking makes it ideal for forming precision automotive parts.
2. Mechanical Engineering
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Applied in industrial machinery, hydraulic systems, and robotic arm joints, where both strength and precision are critical.
3. Fasteners and Bolts
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SCM435 is a standard material for high-strength bolts, screws, and studs, especially in high-pressure environments.
4. Aerospace and Energy Equipment
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Its excellent fatigue resistance and heat treatment stability make it suitable for gas turbine components and engine valve systems.
Why Choose Tongyi Metal’s SCM435 Steel Bars
At Tongyi Metal, we specialize in producing precision-drawn and polished SCM435 alloy steel bars with strict process control.
Our products offer:
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Precision tolerance: ±0.01 mm for consistent fit
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Uniform hardness: Stable HRC 28–35 after heat treatment
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Smooth surface finish: Ra ≤ 0.4, ideal for direct machining
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Reliable quality: Sourced from large steel mills with traceable certifications
Each bar undergoes a complete heat treatment and inspection process to ensure dimensional stability and consistent performance—helping manufacturers reduce machining costs and improve efficiency.
SCM435 alloy steel has earned its reputation as one of the most versatile and reliable materials for automotive and industrial applications. Its combination of high strength, toughness, and machinability allows it to perform across a wide range of environments.
For precision projects that demand both durability and consistency, Tongyi Metal’s SCM435 alloy steel bars are the ideal solution—trusted by manufacturers for their stability, precision, and proven performance in every production line.
