Aisi 4140 4340 30mm 25mm aluminium alloy steel round rod bar for building
Availability: In Stock
Introduce:High tensile strength Anti-corrosion High temperature resistence High quality
Min.Order Quantity: 1 Ton
Payment Terms: L/C,T/T,Western Union
AISI 4140/4340 Steel Round Rod Bar
Our AISI 4140 and 4340 steel round rods are high-strength, heat-treatable steels widely used in construction, machinery manufacturing, automotive components, and structural applications. These alloy steels offer excellent toughness, wear resistance, and fatigue strength, making them ideal for critical engineering applications.
At Baobin, we specialize in providing custom-sized steel rods to meet your specific project requirements. Whether you need standard sizes or custom dimensions, our advanced manufacturing capabilities ensure precision and quality in every delivery.
Product Specifications
| Parameter | Specification |
|---|---|
| Material | AISI 4140 / AISI 4340 |
| Diameter | 30mm, 25mm (Custom sizes available) |
| Length | Custom lengths available |
| Tolerance | 卤0.1mm |
| Surface Finish | Black, Bright, or Custom |
| Heat Treatment | Annealed, Normalized, Quenched & Tempered |
| Certifications | ISO 9001, ISO 14001, CE, SGS |
| Delivery Time | 7-14 working days (Custom orders may vary) |
Material Properties
| Property | AISI 4140 | AISI 4340 |
|---|---|---|
| Tensile Strength (MPa) | 850-1000 | 950-1100 |
| Yield Strength (MPa) | 650-800 | 750-900 |
| Elongation (%) | 12-18 | 10-16 |
| Hardness (HRC) | 28-34 | 28-36 |
| Impact Toughness (J) | 30-50 | 35-60 |
Why Choose Baobin for Your Steel Needs?
- Custom sizes and lengths available to your exact specifications
- Strict quality control throughout the entire production process
- Certified materials meeting international standards
- Competitive pricing for both standard and custom orders
- Reliable delivery times and excellent customer service
Frequently Asked Questions
What is the difference between AISI 4140 and AISI 4340 steel?
AISI 4340 contains higher nickel and chromium content than 4140, providing better toughness and fatigue resistance. 4340 is typically used for more demanding applications requiring higher strength and impact resistance.
Can you provide custom sizes beyond the standard 25mm and 30mm diameters?
Yes, we specialize in custom manufacturing. Please contact our sales team with your specific requirements for a quote and lead time.
What surface finishes are available for these steel rods?
We offer standard black finish, bright finish, and can accommodate custom surface treatments based on your application needs.
What certifications do your steel products have?
Our products are certified to ISO 9001, ISO 14001, CE, and SGS standards. We can provide material test reports and certificates of conformity with each shipment.
For more information about our steel products, please contact our sales team or visit our website.
