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Help CenterHigh-Strength 4140 Alloy Steel Irregularly Shaped Stampings, Hardness HRC 35-40, Heat Treated
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Welcome to Anping County Boli Hardware Wiremesh Products Factory, a trusted manufacturer established in 1998, specializing in high-quality metal stampings. Our High-Strength 4140 Alloy Steel Irregularly Shaped Stampings are engineered to meet the most demanding industrial applications. With a hardness of HRC 35-40 achieved through precise heat treatment, these stampings offer exceptional wear resistance, toughness, and dimensional stability. Backed by over two decades of manufacturing expertise and an annual export value of US$5-10 million, we deliver reliable components to global markets including North America, Europe, and Asia. Each stamping is crafted to your specifications, ensuring a perfect fit for your assembly.
The 4140 alloy steel base provides an excellent balance of strength, ductility, and fatigue resistance. Our heat treatment process (quenching and tempering) is carefully controlled to achieve the target hardness range of HRC 35-40, resulting in components that withstand heavy loads and repetitive stress without deformation. The irregular shape stamping capability allows us to produce complex geometries that traditional machining cannot achieve cost-effectively, reducing your part count and assembly time.
Key Features and Technical Specifications
- Material: 4140 Chromium-Molybdenum alloy steel, known for high strength and toughness.
- Hardness: HRC 35-40, optimized for wear resistance and machinability.
- Heat Treatment: Quenched and tempered to ensure uniform hardness throughout the part.
- Custom Shapes: Irregular and complex geometries manufactured using precision stamping dies.
- Dimensional Accuracy: Typical tolerance of ±0.1 mm, with tighter tolerances available upon request.
- Surface Finish: Smooth, clean finish as standard; additional treatments like black oxide, phosphating, or zinc plating optional.
- Applications: Automotive transmission components, heavy machinery parts, agricultural equipment, hydraulic systems, and structural supports.
Technical Parameters (Typical)
| Parameter | Value |
|---|---|
| Material Grade | AISI 4140 / DIN 1.7225 |
| Hardness (HRC) | 35 – 40 |
| Tensile Strength (MPa) | 900 – 1100 |
| Yield Strength (MPa) | 700 – 850 |
| Elongation (%) | 10 – 15 |
| Impact Toughness (J) | ≥ 30 (Charpy V-notch) |
| Heat Treatment | Quenching + Tempering |
Our stamping process utilizes advanced progressive dies and CNC-controlled presses to ensure consistent quality across large production runs. Each part undergoes post-treatment inspection including hardness testing, dimensional verification, and surface quality checks. We can also provide material certificates and test reports upon request.
Benefits for Your Business
- Reduced Machining Costs: Complex shapes are formed directly, eliminating secondary operations.
- Enhanced Component Life: The 4140 + heat treatment combination offers superior fatigue resistance, reducing replacement frequency.
- Consistency: Stampings exhibit uniform properties from part to part, ensuring reliable assembly performance.
- Design Flexibility: Irregular shapes can be optimized for weight reduction or functional integration.
- Short Lead Times: Our efficient tooling setup and production scheduling support fast turnaround for prototypes and volume orders.
We understand that every application has unique requirements. Our engineering team works closely with clients to refine the stamping design, select the appropriate heat treatment cycle, and determine the ideal surface finish. Whether you need a few hundred samples or millions of production parts, we have the capacity to deliver.
Why Choose Anping County Boli Hardware Wiremesh Products Factory?
With over 25 years of experience in metal forming, we have built a reputation for quality and reliability. Our annual export value of US$5-10 million reflects the trust of customers in more than 20 countries worldwide. We ship from major ports including Tianjin, Qingdao, Shanghai, and Foshan, ensuring convenient logistics. Our factory is equipped with modern stamping presses, heat treatment furnaces, and inspection equipment, all operated by skilled technicians. We are committed to continuous improvement and customer satisfaction.
Contact us today to discuss your specific stamping needs. We provide free design reviews, competitive quotations, and samples for evaluation. Let us help you achieve the performance and durability your products require.
Frequently Asked Questions (FAQ)
Q: What is the typical hardness of these stampings?
A: The hardness is controlled to HRC 35-40 after heat treatment. This range provides excellent wear resistance while maintaining reasonable toughness for impact applications.
Q: Can you produce irregular shapes based on my drawing?
A: Yes, we specialize in custom irregular shapes. Please provide a 2D or 3D drawing, and our tooling engineers will design the corresponding stamping die. We can also assist with design optimization.
Q: What is the minimum order quantity (MOQ)?
A: MOQ depends on part complexity and size. Typically, we accept orders starting from 500 pieces for new parts. For prototypes, we can offer lower quantities. Please contact us for a detailed quote.
Q: How long does it take to get samples?
A: Sample lead time is generally 2-4 weeks after tooling completion. For existing dies, samples can be provided within 1-2 weeks. We prioritize urgent requests.
Q: What surface treatments are available?
A: Standard stampings are as-formed. Optional treatments include black oxide, phosphating, zinc plating, and oil coating. We can also apply paint or other coatings upon request.
Q: Do you provide material certificates?
A: Yes, we can provide mill test certificates for the 4140 steel and heat treatment process records. Additional testing (e.g., ultrasonic, magnetic particle) is available if required.
Q: Can you handle high-volume production?
A: Absolutely. Our factory has multiple stamping lines with capacities up to several million parts per month. We maintain safety stock of raw materials to ensure timely delivery.
Q: What industries commonly use these stampings?
A: Typical applications include automotive drivetrain components, oil and gas equipment, mining machinery, agricultural implements, and general industrial machinery where high strength and wear resistance are critical.
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