Agriculture›
Apparel and fashion accessories›
Construction & real estate›💡Electronic & Electrical›🍎Food & Beverages›🛋️Home furnishing & supplies›⚗️Industrial goods & chemical›🪨Minerals & metals›📦Miscellaneous›
Agriculture›
Apparel and fashion accessories›
Construction & real estate›💡Electronic & Electrical›🍎Food & Beverages›🛋️Home furnishing & supplies›⚗️Industrial goods & chemical›🪨Minerals & metals›📦Miscellaneous›

Dongguan Songshun Mould Steel Co., Ltd. supplies AISI/SAE 4340 low alloy steel bars, a nickel-chromium-molybdenum grade widely used in high-stress applications such as aerospace, automotive, and heavy machinery. The bars are offered in a diameter range of 20 mm to 800 mm, with lengths from 3000 mm to 9000 mm, catering to diverse industrial requirements. This alloy is known for its deep hardenability and high strength-to-weight ratio, making it suitable for critical components like landing gear and crankshafts.
The material is typically supplied in normalized or quenched and tempered conditions, conforming to ASTM A322 standards. 4340 steel bars exhibit superior mechanical properties, including high tensile strength, fatigue resistance, and toughness, which are essential for components subjected to cyclic loading. The alloy’s versatility allows it to be heat-treated to achieve a broad selection of hardness values, depending on the application’s demands.
These bars are used in the production of gears, shafts, and structural components where exceptional strength and reliability are paramount. Industries such as aerospace, automotive, and heavy machinery rely on 4340 steel for parts that must withstand heavy loads and harsh environments. The product is traded internationally under HS Code 7228.20, with Dongguan Songshun Mould Steel Co., Ltd. providing flexible trade terms to accommodate bulk orders.
| Material Grade | AISI/SAE 4340 (Ni-Cr-Mo low alloy steel) |
| Diameter Range | 20 mm to 800 mm |
| Length Range | 3000 mm to 9000 mm |
| Supply Condition | Normalized or quenched and tempered |
| Standard | ASTM A322 |
| HS Code | 7228.20 |
| Typical Tensile Strength | standard 900-1100 MPa in quenched and tempered condition |
| Typical Yield Strength | standard 850-1000 MPa in quenched and tempered condition |
| Typical Elongation | standard 10-15% in 50mm |
| Typical Hardness | standard 248-302 HB (Brinell) in annealed condition |
Dongguan Songshun Mould Steel Co., Ltd. is located at No.4 Dongda Street, Sha Tou, Dongguan, Guangdong Province, China. The company specialises in the supply of mould and alloy steels, with a focus on high-performance grades such as 4340. Its harbor-tier trust status indicates a verified supplier, though the current response rate and average response time are not provided, which may impact pre-sale communication.
The supplier’s profile does not explicitly detail production capacity, certifications, or client history, so buyers should request this information directly. Dongguan Songshun Mould Steel Co., Ltd. positions itself as a provider of alloy steel bars for industrial applications, with the 4340 grade being a key offering for sectors requiring high-strength materials. Confirming the availability of specific diameters, lengths, and heat treatment conditions is recommended before placing an order.
AISI 4340 steel bars are a high-strength Ni-Cr-Mo alloy product widely used in aerospace, automotive, and heavy machinery manufacturing. These bars offer exceptional toughness and fatigue resistance, making them suitable for critical components like landing gear, crankshafts, and power transmission parts. Sourced globally from producers in the USA, Europe, and Asia, 4340 alloy steel bars are traded internationally with HS Code 7228.20, typically supplied in rounds ranging from 20mm to 300mm diameter in normalized or quenched and tempered condition per ASTM A322 standards.
| 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, confirm the exact diameter, length, and heat treatment condition required for your application, as these factors directly influence the material’s performance. Request certificates of conformity to ASTM A322 and verify that the mechanical properties, such as tensile strength and hardness, meet your specifications. It is also important to check whether the supplier can provide material traceability records to ensure consistency in quality.
Discuss Incoterms such as FOB or CIF with the supplier to clarify responsibilities for shipping, insurance, and customs clearance. Lead times for 4340 steel bars can vary depending on the size and quantity ordered, so request an estimated production and delivery schedule. Payment terms should be agreed upon in advance to avoid delays in processing your order, and buyers should confirm whether the supplier offers flexible options for bulk purchases.
Quality checks should include dimensional inspection to ensure the bars meet the specified diameter and length tolerances. Request documentation for heat treatment processes, as these can significantly affect the material’s mechanical properties. Additionally, verify that the supplier performs non-destructive testing, such as ultrasonic inspection, to detect any internal defects. Confirming the availability of material test reports (MTRs) is essential for ensuring the bars meet industry standards and your project requirements.
Active buying requirements from importers looking for Similar products
Compare alternatives, find similar products and connect with verified suppliers
When sourcing 4340 Steel Bars for your business, securing the right balance of quality and cost is essential. Dongguan Songshun Mould Steel Co., Ltd., a verified supplier based in China, offers this product with key specifications including AISI/SAE 4340, AMS 2301 / AMS 6409 / ASTM A322, C 0.38-0.43%, Ni 1.65-2.00%, Cr 0.70-0.90%, Mo 0.20-0.30%, Mn 0.60-0.80%, Si 0.15-0.30%, and Round bars 12mm to 300mm diameter; lengths 3m to 6m (custom cut available). By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $5001500/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 7228.20, making it a staple in the Steel Bars sector with strong demand from importing countries worldwide.
Importing 4340 Steel Bars requires careful attention to shipping logistics, customs compliance, and secure payment terms. Dongguan Songshun Mould 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 7228.20 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 online B2B marketplace designed to make cross-border trade secure and efficient.
Finding trustworthy partners is the foundation of successful importing. The supplier of this 4340 Steel Bars 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 Steel Bars category and connect with top-tier exporters on our comprehensive B2B marketplace. Start your sourcing journey today.
Importing 4340 Steel Bars 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 7228.20 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 4340 Steel Bars from Dongguan Songshun Mould Steel Co., Ltd. is $5001500/Bags 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 Dongguan Songshun Mould Steel Co., Ltd. through EximNext.
The supplier, Dongguan Songshun Mould Steel Co., Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for 4340 Steel Bars. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
For international shipping and customs clearance, 4340 Steel Bars is classified under HS Code 7228.20. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
To import 4340 Steel Bars from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Dongguan Songshun Mould Steel Co., Ltd.. Ensure you have the necessary import licenses for Steel Bars products in your destination country.
Yes, Dongguan Songshun Mould 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.
The key specifications for 4340 Steel Bars supplied by Dongguan Songshun Mould Steel Co., Ltd. include AISI/SAE 4340, AMS 2301 / AMS 6409 / ASTM A322, C 0.38-0.43%, Ni 1.65-2.00%, Cr 0.70-0.90%, Mo 0.20-0.30%, Mn 0.60-0.80%, Si 0.15-0.30%, and Round bars 12mm to 300mm diameter; lengths 3m to 6m (custom cut available). For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
Dongguan Songshun Mould Steel Co., Ltd. offers 4340 Steel Bars with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
4340 Steel Bars is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Dongguan Songshun Mould Steel Co., Ltd. through our platform.
Dongguan Songshun Mould Steel Co., Ltd. maintains international quality certifications. These ensure that the 4340 Steel Bars 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. Dongguan Songshun Mould 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 Dongguan Songshun Mould Steel Co., Ltd..
Discover more products in Steel Bars from verified suppliers worldwide.