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Help CenterCustom-shaped Steel Stampings Made From 4140 Alloy Steel With Heat Treatment to HRC 40-45
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As a manufacturer with over two decades of experience since 1998, Anping County Boli Hardware Wiremesh Products Factory specializes in producing high-quality custom-shaped steel stampings made from 4140 alloy steel. Our precision stampings undergo a controlled heat treatment process to achieve a hardness range of HRC 40-45, ensuring excellent wear resistance and dimensional stability. With an annual export value exceeding US$5 million, we serve clients across North America, Europe, Asia, and beyond, delivering reliable components for demanding applications.
Our custom-shaped stampings are designed to meet your specific requirements, whether for automotive drivetrains, industrial machinery, or heavy equipment. The 4140 alloy steel provides a balanced combination of strength, toughness, and fatigue resistance, while the precise heat treatment optimizes the material for long service life. Each part is manufactured using advanced stamping dies and undergoes rigorous quality checks to ensure consistent performance.
Key Features & Technical Specifications
- Material: Premium 4140 alloy steel (chromium-molybdenum), known for its high tensile strength and good machinability.
- Heat Treatment: Quenched and tempered to achieve a hardness of HRC 40-45, with a uniform microstructure for consistent properties.
- Custom Shapes: We can produce complex geometries, including flanges, brackets, levers, and irregular contours, based on your drawings or samples.
- Dimensional Accuracy: Standard tolerances of ±0.1 mm, with tighter tolerances available upon request.
- Surface Finish: Options include as-stamped, shot-blasted, or coated (e.g., phosphate, oil, or black oxide) to meet corrosion resistance needs.
- Production Capacity: Capable of both small-lot prototypes and high-volume runs, with tooling designed for efficiency.
| Parameter | Specification |
|---|---|
| Material Grade | AISI 4140 / DIN 1.7225 |
| Hardness (HRC) | 40-45 |
| Tensile Strength | ≥ 850 MPa (typical) |
| Yield Strength | ≥ 650 MPa (typical) |
| Elongation | ≥ 12% |
| Impact Toughness (Charpy V-notch) | ≥ 20 J at room temperature |
The combination of 4140 alloy steel and the HRC 40-45 heat treatment delivers several benefits for your application:
- Enhanced Wear Resistance: The hardened surface reduces abrasion and extends component life, especially in sliding or high-contact applications.
- Improved Fatigue Strength: The tempered martensite structure withstands cyclic loading better than untreated steel, ideal for springs and load-bearing parts.
- Uniform Properties: Our controlled heat treatment process ensures consistent hardness throughout the part, minimizing brittle zones.
- Cost-Effective Customization: We offer flexible tooling options, allowing you to optimize shapes without incurring excessive setup costs.
- Reliable Supply Chain: With multiple shipping ports (Tianjin, Qingdao, Shanghai, Foshan) and a global logistics network, we deliver on time.
Trust & Quality Assurance
Anping County Boli Hardware Wiremesh Products Factory has been a trusted manufacturer since 1998. Our annual export value of US$5–10 million reflects our commitment to quality and customer satisfaction. We serve a diverse range of markets, including North America, South America, Europe, and Asia, with the flexibility to meet both domestic and international standards. Every batch of custom-shaped steel stampings is inspected for hardness, dimensional accuracy, and surface finish before shipment. We also welcome customer audits and third-party inspections to ensure full compliance with your specifications.
By choosing our stampings, you benefit from decades of metallurgical expertise, precision tooling, and a responsive team that understands the importance of tight tolerances and consistent quality. Whether you need a simple bracket or a complex multi-step stamping, we are ready to partner with you.
Frequently Asked Questions (FAQ)
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What is the minimum order quantity (MOQ) for custom-shaped stampings?
Our MOQ depends on the complexity of the part and tooling requirements. Typically, we accept orders starting from 500 pieces for simple shapes, and lower quantities may be possible with shared tooling. Contact us for a specific quote. -
Can you provide samples before mass production?
Yes, we can produce sample stampings based on your drawings or physical samples. The sample cost is negotiable and will be deducted from the final order if applicable. -
What is the typical lead time for custom stampings?
After tooling is ready, production lead time is usually 15–25 working days, depending on order quantity and heat treatment requirements. Rush orders can be arranged at an additional cost. -
What file formats do you accept for drawings?
We accept CAD files in formats such as .dwg, .dxf, .stp, .igs, and .pdf. We can also work from physical samples or sketches. -
Do you offer any surface treatment or coating?
Yes, we provide optional surface treatments like phosphating, oiling, black oxide, or zinc plating. The choice depends on your corrosion resistance and aesthetic requirements. Please specify when ordering. -
How do you ensure the hardness of HRC 40-45 is consistent?
We use calibrated heat treatment furnaces with precise temperature control and conduct hardness testing on each batch using Rockwell hardness testers. A quality report is provided with the shipment. -
Can you stamp parts with a thickness greater than 10 mm?
Our stamping capabilities cover materials up to 12 mm thick in 4140 alloy steel. For thicker parts, we may recommend alternative forming processes. Contact us to discuss your specific thickness. -
What is the typical tolerance for your stampings?
Standard tolerance is ±0.1 mm. For critical dimensions, we can achieve tolerances as tight as ±0.05 mm, subject to tooling design and part geometry. Please indicate your tolerance requirements on the drawing.
Ready to discuss your custom-shaped stamping project? Contact our sales team with your drawings or specifications. We will provide a competitive quotation and engineering support to ensure the best solution for your application. With our experienced team and global shipping capabilities, we are your reliable partner for precision 4140 alloy steel stampings.
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