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AISI 4340 alloy steel from Shenzhen NewAsia Special Steel Co., Ltd. is a low-alloy, high-strength material distinguished by its nickel, chromium, and molybdenum content. These alloying elements deliver exceptional hardenability, fatigue resistance, and tensile strength, making it suitable for heavy-duty mechanical applications. The grade can be heat treated to achieve strength levels exceeding 1,500 MPa while retaining ductility and impact resistance, a balance critical for large cross-sections.
This steel is typically supplied in the annealed or normalized condition, with a carbon content of 0.38-0.43%, manganese at 0.60-0.80%, and phosphorus and sulfur limited to 0.035% maximum each. Its microstructure can be fine-tuned through quenching and tempering to meet specific mechanical property targets. Industry-wide, AISI 4340 is recognized for its deep hardenability, with a typical Jominy end-quench distance of 12-15 mm for 50% martensite.
Primary buyers include manufacturers in aerospace, automotive, and heavy machinery sectors, where it is used for crankshafts, gears, and aircraft landing gear. Importers sourcing from China should confirm heat treatment records and ultrasonic testing reports, as these are standard for critical applications. The HS code 72284000 applies, facilitating customs classification for alloy steel in this grade.
| Grade | AISI 4340 |
| Alloying Elements | Nickel, Chromium, Molybdenum |
| Carbon Content | 0.38-0.43% |
| Manganese Content | 0.60-0.80% |
| Phosphorus Max | 0.035% |
| Sulfur Max | 0.035% |
| Tensile Strength (Heat Treated) | Typical 1,500 MPa minimum |
| Hardenability (Jominy) | Typical 12-15 mm for 50% martensite |
| Typical Applications | Crankshafts, gears, connecting rods, aircraft landing gear |
| HS Code | 72284000 |
Shenzhen NewAsia Special Steel Co., Ltd. is based in Shenzhen, a major hub for steel production and export in China. The company holds a harbor trust tier, indicating a baseline level of verification for international trade. Its product portfolio includes high-strength alloy steels tailored for industrial applications, with a focus on grades like AISI 4340 that serve aerospace and heavy machinery sectors.
The supplier’s profile does not state a response rate or average response time, which may indicate limited engagement or a focus on direct inquiries. Buyers should verify communication channels and technical support capabilities before placing orders. No additional certifications, factory details, or client references are provided in the available data.
| Business Type | Supplier |
| Year Established | Recently Joined |
| Employees | Contact Supplier |
| Annual Revenue | Contact Supplier |
| Main Products | View Products Tab |
| Major Markets | Global |
| Response Time | <4h |
| Response Rate | New Supplier |
Before ordering AISI 4340 from Shenzhen NewAsia Special Steel Co., Ltd., verify the heat treatment records and mechanical test reports. These documents confirm the steel meets the required tensile strength, hardness, and impact resistance for your application. Request third-party inspection certificates if the material will be used in safety-critical components.
Confirm the Incoterms, packaging standards, and lead times for bulk shipments. AISI 4340 is typically shipped in bundles or coils, and buyers should specify packaging requirements to prevent damage during transit. FOB Shenzhen is a common Incoterm for steel exports from China, but CIF options may be available for larger orders.
Quality checks should include ultrasonic testing for internal defects and dimensional verification for plates or bars. Request a mill test certificate to ensure the chemical composition and mechanical properties align with AISI 4340 standards. For critical applications, consider arranging a pre-shipment inspection by a recognized agency like SGS or Bureau Veritas.
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When sourcing Alloy Steel for your business, securing the right balance of quality and cost is essential. Shenzhen NewAsia Special Steel Co., Ltd., a verified supplier based in China, offers this product for international export. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $1000/Other and manage bulk orders with a minimum order quantity (MOQ) of 33 Other. This product is actively traded under HS Code 72284000, making it a staple in the Minerals & metals sector with strong demand from importing countries worldwide.
Importing Alloy Steel requires careful attention to shipping logistics, customs compliance, and secure payment terms. Shenzhen NewAsia Special Steel Co., Ltd. offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. To ensure a smooth transaction, buyers should verify import duties for HS Code 72284000 in their destination country. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading B2B marketplace designed to make cross-border trade secure and efficient.
Finding trustworthy partners is the foundation of successful importing. The supplier of this Alloy Steel has been verified on our platform. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of verified manufacturers and exporters across 200+ countries. Explore similar products in the Minerals & metals category and connect with top-tier exporters on our comprehensive global B2B marketplace. Start your sourcing journey today.
Importing Alloy Steel requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties for HS Code 72284000 in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
The current listed wholesale price for Alloy Steel from Shenzhen NewAsia Special Steel Co., Ltd. is $1000/Other on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Shenzhen NewAsia Special Steel Co., Ltd. through EximNext.
The supplier, Shenzhen NewAsia Special Steel Co., Ltd., has set a Minimum Order Quantity (MOQ) of 33 Other for Alloy Steel. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
For international shipping and customs clearance, Alloy Steel is classified under HS Code 72284000. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
To import Alloy Steel from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Shenzhen NewAsia Special Steel Co., Ltd.. Ensure you have the necessary import licenses for Minerals & metals products in your destination country.
Yes, Shenzhen NewAsia Special Steel Co., Ltd. is a verified supplier on EximNext. You can view their complete company profile, business registration details, certifications, and export history before placing a bulk order.
For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to Shenzhen NewAsia Special Steel Co., Ltd. through EximNext.
Shenzhen NewAsia Special Steel Co., Ltd. offers Alloy Steel with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Alloy Steel is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Shenzhen NewAsia Special Steel Co., Ltd. through our platform.
Shenzhen NewAsia Special Steel Co., Ltd. maintains international quality certifications. These ensure that the Alloy Steel meets international quality, safety, and regulatory standards required for cross-border trade.
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Shenzhen NewAsia Special Steel Co., Ltd. will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Shenzhen NewAsia Special Steel Co., Ltd..
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