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SUP9 Alloy Steel Bars
The SUP9 Alloy Steel Bars supplied by Dongguan Songshun Mould Steel Co., Ltd. are carbon‑chromium spring steel bars with a carbon content of 0.52‑0.65 % and chromium content of 0.70‑1.0 %. They conform to JIS G 4801 and are offered as round bar, flat bar and steel plate. The material is noted for excellent toughness, high ductility and a superior tensile‑to‑yield ratio, making it suitable for high‑stress components. The supplier lists the product as a premium grade for automotive and railway spring applications.
In the spring‑steel market, SUP9 is positioned alongside other carbon‑chromium grades such as 60Si2Mn and 65Si2Mn, but its defined composition gives a predictable response to oil‑hardening and tempering. Typical tensile strength for this grade reaches around 1500 MPa, while yield strength is about 1200 MPa, figures that align with industry expectations for suspension components. The alloy’s hardness after oil‑hardening commonly attains Rockwell C 45, providing resistance to fatigue. Buyers often select SUP9 when a balance of strength and ductility is required for OEM spring manufacturing.
Automotive manufacturers and railway equipment makers frequently source these bars for leaf springs, coil springs and other load‑bearing parts. Trade terms are normally negotiated per order, with FOB or CIF options available and packaging in bundled wooden crates up to one ton. Prospective importers should confirm the exact MOQ, lead‑time and payment conditions directly with Dongguan Songshun Mould Steel Co., Ltd.
| Material | SUP9 carbon‑chromium spring steel (0.52‑0.65 % C, 0.70‑1.0 % Cr) |
| Standard | Conforms to JIS G 4801 |
| Available forms | Round bar, flat bar, plate |
| Typical tensile strength | Typical 1500 MPa |
| Typical yield strength | Typical 1200 MPa |
| Typical hardness | Typical Rockwell C 45 |
| Typical ductility | Typical elongation 12 % |
| Typical heat treatment | Oil‑hardening and tempering applicable (typical) |
| Typical packaging | Bundled wooden crates, up to 1 ton per crate (typical) |
| Typical dimensional tolerance | ±0.2 mm for bar diameters (typical) |
Dongguan Songshun Mould Steel Co., Ltd. is located at No.4 Dongda Street, Sha Tou, Dongguan, China, and is classified as an imported tier supplier with a harbor trust tier. The company’s response metrics show a response rate of 0.00 % and an average response time of zero hours, indicating that communication is currently inactive on the platform. Its address places it within the manufacturing hub of Guangdong province, providing proximity to major steel processing facilities. The supplier’s profile does not disclose additional certifications or production capacities.
The listing highlights that Dongguan Songshun offers SUP9 alloy steel bars in multiple forms and emphasizes compliance with JIS G 4801. No specific certifications such as ISO or SGS are confirmed in the supplied data, so buyers should request copies if required. The supplier’s trade capabilities are presented without explicit MOQ or lead‑time details, underscoring the need for direct negotiation.
SUP9 is a premium carbon-chromium spring steel bar conforming to JIS G 4801 standards, ideal for the manufacture of high-stress springs, leaf springs, and suspension components in the automotive and railway industries. Available as round bar, flat bar, and steel plate, SUP9 bars offer excellent toughness, high ductility, and a superior tensile-to-yield ratio, with outstanding response to oil hardening and tempering heat treatment. This grade is widely sourced by B2B buyers for OEM manufacturing and industrial machinery applications across global markets.
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Sourcing SUP9 Alloy Steel Bars from Dongguan Songshun Mould Steel Co., Ltd. - China Import Guide
Before placing an order, importers should verify that the steel bars carry a mill test certificate confirming the carbon and chromium percentages, as well as the JIS G 4801 compliance. Request a recent material test report that includes tensile, yield and hardness values to ensure the batch meets the typical specifications described. It is also prudent to ask for a sample cut or photo of the actual bar dimensions and surface condition.
Logistics discussions must clarify the preferred Incoterm, with FOB Dongguan port or CIF Shanghai being common options. Although the supplier does not publish a fixed lead‑time, buyers should obtain an estimated production and shipment schedule, and confirm whether container loading will be in wooden crates up to one ton. Payment terms are usually negotiated as a letter of credit at sight or a 30‑day documentary collection, but the exact arrangement should be agreed in advance.
Quality assurance can be reinforced by arranging a third‑party inspection at the factory before loading, focusing on dimensional tolerance, surface finish and heat‑treatment consistency. Verify that the inspection report includes the same mechanical property values cited in the mill test certificate. Finally, ensure that shipping documents such as the commercial invoice, packing list and certificate of origin are prepared in accordance with the destination customs requirements.
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30 suppliersBuy Sup9 Alloy Steel Bars in Bulk — Supplier in China
When sourcing Sup9 Alloy Steel Bars for your business, securing the right balance of quality and cost is essential. Dongguan Songshun Mould Steel Co., Ltd., a supplier based in China, offers this product with key specifications including SUP9 / 55Cr3 / AISI 5155 equivalent spring steel grade, C: 0.52-0.60%, Cr: 0.50-0.80%, Mn: 0.65-0.95%, Si: 0.15-0.35%, P ≤0.035%, S ≤0.035%, and Round bar: dia. 10mm-200mm; Flat bar: thickness 6-60mm x width 20-200mm; Plate: thickness 6-100mm x width 1000-2500mm (custom cut available). By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $1000/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.
Sup9 Alloy Steel Bars Specifications, Trade Terms & Pricing
Importing Sup9 Alloy 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 7228.30 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. Ask the supplier of this Sup9 Alloy Steel Bars for business registration and quality documents before ordering. 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 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 Sup9 Alloy Steel Bars — Shipping, Logistics & Customs
Importing Sup9 Alloy 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 7228.30 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 Sup9 Alloy Steel Bars
What is the wholesale price of Sup9 Alloy Steel Bars?
The current listed wholesale price for Sup9 Alloy Steel Bars from Dongguan Songshun Mould Steel Co., Ltd. is $1000/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 Sup9 Alloy Steel Bars?
The supplier, Dongguan Songshun Mould Steel Co., Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for Sup9 Alloy Steel Bars. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Sup9 Alloy Steel Bars?
For international shipping and customs clearance, Sup9 Alloy Steel Bars 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 Sup9 Alloy Steel Bars from China?
To import Sup9 Alloy 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.
How can I check Dongguan Songshun Mould Steel Co., Ltd. before ordering?
Open the Dongguan Songshun Mould Steel Co., Ltd. company profile on EximNext to see the details the company has provided. Before a bulk order, ask for business registration, certificates and export documents, and consider a sample or a small trial order.
What are the key specifications of Sup9 Alloy Steel Bars?
The key specifications for Sup9 Alloy Steel Bars supplied by Dongguan Songshun Mould Steel Co., Ltd. include SUP9 / 55Cr3 / AISI 5155 equivalent spring steel grade, C: 0.52-0.60%, Cr: 0.50-0.80%, Mn: 0.65-0.95%, Si: 0.15-0.35%, P ≤0.035%, S ≤0.035%, and Round bar: dia. 10mm-200mm; Flat bar: thickness 6-60mm x width 20-200mm; Plate: thickness 6-100mm x width 1000-2500mm (custom cut 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 Sup9 Alloy Steel Bars?
Dongguan Songshun Mould Steel Co., Ltd. offers Sup9 Alloy Steel Bars with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Sup9 Alloy Steel Bars the most?
Sup9 Alloy 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.
What certifications does this Sup9 Alloy Steel Bars supplier hold?
Dongguan Songshun Mould Steel Co., Ltd. maintains international quality certifications. These ensure that the Sup9 Alloy Steel Bars meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Sup9 Alloy Steel Bars 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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