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AISI 4140 is a chromium molybdenum alloy steel bar stock supplied by Dongguan Songshun Mould Steel Co., Ltd. in China, offering high tensile strength and excellent heat treatment response for demanding industrial applications. The material composition includes chromium and molybdenum as primary alloying elements, with a carbon content higher than 4130 steel, enabling superior hardness and toughness after heat treatment. Available in multiple forms including round bars, plates and sheets, this grade is held in stock for immediate export shipment.
The alloy’s microstructure delivers consistent performance in high-stress environments, with typical mechanical properties including a tensile strength of 655 MPa in the annealed condition and up to 1310 MPa after quenching and tempering. Standard industry specifications for 4140 include ASTM A29 for bars and ASTM A829 for plates, with typical chemical ranges of 0.38-0.43% carbon, 0.75-1.00% chromium and 0.15-0.25% molybdenum. Machinability is rated at 65% of B1112 steel, and the material is known for good weldability with preheat and post-weld heat treatment.
Common applications span automotive axles, gears and shafts, oil and gas drilling components, aerospace landing gear parts and heavy machinery structural frames. Buyers typically source this grade for parts requiring a balance of strength, ductility and resistance to wear, with export packaging in bundles or crates to prevent damage during international transit. The supplier confirms stock availability, with trade terms and lead times to be verified directly with Dongguan Songshun Mould Steel Co., Ltd.
| Alloy Designation | AISI/SAE 4140 |
| Primary Alloying Elements | Chromium, Molybdenum |
| Carbon Content | 0.38-0.43% (typical) |
| Chromium Content | 0.75-1.00% (typical) |
| Molybdenum Content | 0.15-0.25% (typical) |
| Tensile Strength (Annealed) | 655 MPa (typical) |
| Tensile Strength (Quenched & Tempered) | 1310 MPa (typical) |
| Machinability Rating | 65% of B1112 steel (standard) |
| Forms Available | Round bars, plates, sheets |
| Heat Treatment Capability | Yes, to achieve desired hardness levels |
Dongguan Songshun Mould Steel Co., Ltd. is based in Sha Tou, Dongguan, China, with its registered address at No.4 Dongda Street. The company operates as an importer-tier supplier in the alloy steel market, specialising in high-performance grades such as AISI 4140 for industrial applications. Its harbor trust tier indicates a baseline level of verification for international trade, though response metrics are currently unavailable.
The supplier’s profile confirms the availability of 4140 steel in stock, ready for immediate export shipment, but does not provide additional details on production capacity, certifications or client history. Buyers are advised to verify these specifics directly with Dongguan Songshun Mould Steel Co., Ltd. as part of their sourcing due diligence. The company’s focus on chromium molybdenum alloy steels positions it as a niche provider for buyers requiring these grades.
AISI 4140 is a chromium molybdenum alloy steel bar stock offering superior strength and heat treatment response compared to lower-carbon alternatives like 4130. Available in various sizes and forms, 4140 steel is widely used in automotive components, oil and gas drilling equipment, aerospace assemblies, and heavy machinery parts requiring high tensile strength and toughness. This product is in stock and ready for immediate export shipment, suitable for international trade and industrial sourcing.
| 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 4140 steel from Dongguan Songshun Mould Steel Co., Ltd., buyers should verify the exact chemical composition and mechanical properties of the stock material, as these can vary between batches. Request mill test certificates (MTCs) to confirm compliance with ASTM A29 or A829 standards, and ensure the material meets the required specifications for your application.
Logistics details such as lead time, packaging and incoterms (e.g., FOB or CIF) should be confirmed directly with the supplier. Packaging for export typically includes bundling or crating to prevent damage during transit, but buyers should specify their requirements. Payment terms, such as L/C or T/T, should also be clarified to avoid delays in shipment.
Quality checks should include visual inspection for surface defects, dimensional verification against purchase orders and non-destructive testing (NDT) if required. For critical applications, consider third-party inspection or testing for hardness, tensile strength and microstructure. Ensure all documentation, including MTCs and certificates of origin, is provided and reviewed before finalising the order.
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When sourcing 4140 Steel , 4140 Steel In Stock 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 / SCM440 / EN24 Chromium Molybdenum Alloy Steel, C 0.38-0.43%, Cr 0.80-1.10%, Mo 0.15-0.25%, Mn 0.75-1.00%, Si 0.15-0.30%, and Round Bar: 10mm-300mm dia; Plate/Block: Custom dimensions available. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $1,8002,200./Unit and manage bulk orders with a minimum order quantity (MOQ) of 1 Unit. This product is actively traded under HS Code 7228.30, making it a staple in the Steel sector with strong demand from importing countries worldwide.
Importing 4140 Steel , 4140 Steel I 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 import export marketplace designed to make cross-border trade secure and efficient.
Finding trustworthy partners is the foundation of successful importing. The supplier of this 4140 Steel , 4140 Steel I 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 category and connect with top-tier exporters on our comprehensive online B2B marketplace. Start your sourcing journey today.
Importing 4140 Steel , 4140 Steel I 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).
The current listed wholesale price for 4140 Steel , 4140 Steel In Stock from Dongguan Songshun Mould Steel Co., Ltd. is $1,8002,200./Unit 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 Unit for 4140 Steel , 4140 Steel I. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
For international shipping and customs clearance, 4140 Steel , 4140 Steel In Stock is classified under HS Code 7228.30. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
To import 4140 Steel , 4140 Steel I 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 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 4140 Steel , 4140 Steel In Stock supplied by Dongguan Songshun Mould Steel Co., Ltd. include AISI 4140 / SCM440 / EN24 Chromium Molybdenum Alloy Steel, C 0.38-0.43%, Cr 0.80-1.10%, Mo 0.15-0.25%, Mn 0.75-1.00%, Si 0.15-0.30%, and Round Bar: 10mm-300mm dia; Plate/Block: Custom dimensions 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 4140 Steel , 4140 Steel I with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
4140 Steel , 4140 Steel I 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 4140 Steel , 4140 Steel I 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..
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