Import 4140 Alloy Steel Round Bar — Buy in wholesale FOB from Supplier in China
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4140 Alloy Steel Round Bar
The 4140 alloy steel round bar from Dongguan Songshun Mould Steel Co., Ltd. is a chromium-molybdenum alloy product (AISI 4140) known for its high tensile strength and toughness. It is typically supplied in diameters ranging from 16mm to 300mm, with lengths tailored to customer requirements, and is available in hot-rolled or cold-drawn conditions. The material’s chemical composition includes chromium (0.80-1.10%), molybdenum (0.15-0.25%), and carbon (0.38-0.43%), which contribute to its excellent machinability and heat treat response.
This grade is widely used in machinery, automotive, and oilfield applications due to its ability to withstand high-stress environments. It meets ASTM A29 standards, ensuring it adheres to recognized industry specifications for chemical composition and mechanical properties. The slightly higher carbon content compared to 4130 steel enhances its hardness and strength, making it a preferred choice for components like shafts, gears, and tool holders.
Buyers often source this material in bulk tons for industrial procurement, valuing its consistency and performance in demanding applications. The supplier’s ability to provide custom diameters and lengths beyond standard sizes makes it a flexible option for manufacturers. Importers should confirm the specific condition (hot-rolled or cold-drawn) and any additional heat treatment requirements to match their production needs.
| Material Grade | AISI 4140 / Chromium-Molybdenum Alloy Steel |
| Chemical Composition | Cr 0.80-1.10%, Mo 0.15-0.25%, C 0.38-0.43% |
| Diameter Range | 16mm to 300mm |
| Condition | Hot-rolled or cold-drawn |
| Typical Yield Strength | 655 MPa (annealed) |
| Typical Elongation | 25.7% in 50mm (annealed) |
| Typical Reduction of Area | 57.3% (annealed) |
| Standards Compliance | ASTM A29 |
| Typical Applications | Shafts, gears, tool holders, high-strength components |
| Typical Heat Treatment | Quenching and tempering for enhanced strength |
| Typical Hardness (as supplied) | 200-250 HB |
| Typical Machinability Rating | 70% (relative to AISI 1212 steel) |
Dongguan Songshun Mould Steel Co., Ltd. is based in Sha Tou, Dongguan, China, and specializes in the production and supply of alloy steel products. The company’s focus on chromium-molybdenum steels like 4140 positions it as a key supplier for industries requiring high-performance materials, including machinery, automotive, and oilfield sectors. Its ability to provide custom diameters and lengths caters to diverse industrial needs.
The supplier’s profile indicates an imported tier classification and a harbor trust tier, but its response rate and average response time are currently unconfirmed. Buyers are advised to directly verify the supplier’s production capabilities, lead times, and quality control processes. The company’s adherence to ASTM A29 standards ensures its products meet internationally recognized specifications, which is critical for global trade.
The AISI 4140 alloy steel round bar is a chromium-molybdenum alloy product widely sourced for machinery, automotive, and oilfield applications due to its high tensile strength and toughness. Available in diameters from 16mm to 300mm, typically supplied in hot-rolled or cold-drawn condition, it meets ASTM A29 standards. This product is a staple in B2B industrial procurement, traded in bulk tons and sought by importers for its consistent machinability and heat treat response.
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Sourcing 4140 Alloy Steel Round Bar from Dongguan Songshun Mould Steel Co., Ltd. - China Import Guide
Before placing an order, confirm the supplier’s ability to provide the required diameter and length tolerances, as these can impact the material’s suitability for your application. Request mill test certificates to verify the chemical composition (Cr, Mo, C) and mechanical properties, such as tensile strength and elongation, to ensure they meet ASTM A29 standards. Clarify whether the material is supplied in hot-rolled or cold-drawn condition, as this affects its surface finish and machinability.
Discuss lead times for standard and custom diameters, as well as the supplier’s production capacity for bulk orders. Confirm Incoterms (e.g., FOB Dongguan) and payment terms, and request details on packaging methods to prevent damage during transit. For international shipments, ensure the supplier can provide the necessary export documentation, including certificates of origin and compliance with import regulations.
Upon receipt, conduct dimensional inspections to verify the diameter, length, and straightness of the round bars. Perform hardness testing or third-party inspections if the material will be used in critical applications. Check that all documentation, such as packing lists and test certificates, matches the purchase order and meets your quality requirements. Address any discrepancies with the supplier before proceeding with production.
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30 suppliersBuy 4140 Alloy Steel Round Ba in Bulk — Verified Supplier in China
When sourcing 4140 Alloy Steel Round Bar 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 4140 / SAE 4140 (Chromoly), Cr 0.80-1.10%, Mo 0.15-0.25%, C 0.38-0.43%, Mn 0.75-1.00%, and 10mm to 300mm (custom sizes available). By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $5002000/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 7228.30, making it a staple in the Steel Bars sector with strong demand from importing countries worldwide.
4140 Alloy Steel Round Ba Specifications, Trade Terms & Pricing
Importing 4140 Alloy Steel Round Ba 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 7228.30 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.
About Dongguan Songshun Mould Steel Co., Ltd. — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this 4140 Alloy Steel Round Ba 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.
Import 4140 Alloy Steel Round Ba — Shipping, Logistics & Customs
Importing 4140 Alloy Steel Round Ba 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 7228.30 in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
Frequently Asked Questions About 4140 Alloy Steel Round Ba
What is the wholesale price of 4140 Alloy Steel Round Bar?
The current listed wholesale price for 4140 Alloy Steel Round Bar from Dongguan Songshun Mould Steel Co., Ltd. is $5002000/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.
What is the Minimum Order Quantity (MOQ) for 4140 Alloy Steel Round Ba?
The supplier, Dongguan Songshun Mould Steel Co., Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for 4140 Alloy Steel Round Ba. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for 4140 Alloy Steel Round Bar?
For international shipping and customs clearance, 4140 Alloy Steel Round Bar is classified under HS Code 7228.30. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import 4140 Alloy Steel Round Ba from China?
To import 4140 Alloy Steel Round Ba 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.
Is Dongguan Songshun Mould Steel Co., Ltd. a verified supplier?
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.
What are the key specifications of 4140 Alloy Steel Round Bar?
The key specifications for 4140 Alloy Steel Round Bar supplied by Dongguan Songshun Mould Steel Co., Ltd. include AISI 4140 / SAE 4140 (Chromoly), Cr 0.80-1.10%, Mo 0.15-0.25%, C 0.38-0.43%, Mn 0.75-1.00%, and 10mm to 300mm (custom sizes available). For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
What packaging options are available for bulk orders of 4140 Alloy Steel Round Ba?
Dongguan Songshun Mould Steel Co., Ltd. offers 4140 Alloy Steel Round Ba with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import 4140 Alloy Steel Round Ba the most?
4140 Alloy Steel Round Ba is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Dongguan Songshun Mould Steel Co., Ltd. through our platform.
What certifications does this 4140 Alloy Steel Round Ba supplier hold?
Dongguan Songshun Mould Steel Co., Ltd. maintains international quality certifications. These ensure that the 4140 Alloy Steel Round Ba meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for 4140 Alloy Steel Round Bar on EximNext?
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.
What payment methods are accepted?
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..
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