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Cold Drawn Flat Steel - Mill Direct Factory Supplier |
China
Supplier's customization ability
- Drawing-based customization
- Sample-based customization
- Full customization
Minimum order quantity: 1 ton
Shipping total: To be negotiated
- Lead time:
- confirmed with the quotation
- Packaging:
- standard export packing
- Samples:
- available on request
Product details
Technical Specifications of Cold Drawn Flat Steel
| Property | Parameter | Description |
|---|---|---|
| Product Name | Cold Drawn Flat Steel | Flat steel bar produced via cold drawing process for enhanced dimensional accuracy and surface quality |
| Material Grade | 1018 / 1045 / 1215 (AISI); S235 / S355 / C45 (EN); Q235 / 45# (GB) | Low carbon, medium carbon, and free-machining grades available; international equivalent grades supplied on request |
| Standard Compliance | ASTM A108 / EN 10277-2 / JIS G3123 / GB/T 905 | Meets dimensional tolerances and mechanical property requirements per applicable international standards |
| Chemical Composition (C) | 0.08% – 0.50% max | Carbon content varies by grade; controls hardness and strength |
| Chemical Composition (Mn) | 0.30% – 1.65% max | Manganese enhances hardenability and tensile strength |
| Chemical Composition (P / S) | P ≤ 0.040% / S ≤ 0.050% | Controlled to minimize brittleness and improve machinability |
| Tensile Strength | 380 – 750 MPa | Varies by grade and section size; per ASTM A108 / EN 10277-2 requirements |
| Yield Strength | 250 – 600 MPa | Cold drawing process increases yield strength compared to hot rolled equivalents |
| Elongation | 10% – 25% (min) | Measured on gauge length 5.65√S₀; grade and thickness dependent |
| Hardness | 120 – 220 HB | Brinell hardness; cold work hardening effect applied during drawing |
| Thickness Range | 3 mm – 100 mm | Tolerance class h9–h11 per EN 10277; custom thickness available |
| Width Range | 10 mm – 300 mm | Width-to-thickness ratio up to 10:1; tight tolerances ±0.1 mm achievable |
| Length | 2,000 mm – 6,000 mm (standard); cut-to-length available | Random or fixed lengths; precision cut-to-length service offered |
| Surface Finish | Bright / Oiled / Phosphated | Smooth bright finish from cold drawing die; rust-preventive oil coating standard for export |
| Application | Automotive parts, machinery components, shafts, keys, brackets, precision machined parts | Widely used where tight dimensional tolerances and good surface finish are required |
| Certification | ISO 9001:2015 / Mill Test Certificate (EN 10204 3.1 / 3.2) | Full material traceability; third-party inspection available (SGS, BV, TÜV) |
| Packaging | Bundled with steel strapping; wooden pallet or steel pallet; waterproof paper wrapped | Bundle weight 1–3 MT; export seaworthy packaging standard |
| MOQ | 1 MT per size / 5 MT per order | Mixed sizes accepted to meet minimum order quantity; spot stock available for standard sizes |
Cold Drawn Flat Steel - Mill Direct Factory Supplier
Cold drawn flat steel is a precision-engineered steel product manufactured through a cold drawing process that pulls heated steel through a die at room temperature, delivering superior dimensional accuracy and an exceptionally smooth surface finish. This process significantly enhances the mechanical properties of the base material, resulting in increased tensile strength, improved hardness, and tighter dimensional tolerances compared to hot-rolled alternatives. Cold drawn flat steel finds extensive application in industries such as automotive manufacturing, mechanical engineering, tool and die production, construction, and precision machinery fabrication. Its consistent cross-sectional geometry and clean surface make it the preferred choice for components requiring close-tolerance fits, reduced machining time, and reliable structural performance. As a mill-direct factory supplier, we offer a comprehensive range of cold drawn flat steel in multiple grades, widths, and thicknesses to meet the specific demands of global industrial buyers, ensuring both quality consistency and cost-effective procurement at scale.
What is Cold Drawn Flat Steel?
Cold drawn flat steel is a type of steel bar with a rectangular cross-section produced by drawing hot-rolled steel through a precision die under ambient temperature conditions. This cold working process refines the grain structure of the steel, resulting in a product with tighter dimensional tolerances (typically ±0.05 mm), improved surface quality, and enhanced mechanical strength — making it suitable for high-precision industrial applications without requiring extensive secondary machining.
Cold Drawn Flat Steel Technical Specifications
Our cold drawn flat steel is manufactured to meet international standards including ASTM A108, DIN EN 10278, and GB/T 905. Key specifications include a tensile strength ranging from 480 MPa to 750 MPa depending on grade, yield strength of 415 MPa minimum, and a surface hardness of 140–220 HB. Available widths span 10 mm to 200 mm with thickness from 3 mm to 80 mm. Standard grades include 1018, 1045, C45, and 20Cr, with custom grades available upon request.
| Parameter | Specification |
|---|---|
| Standard | ASTM A108 / DIN EN 10278 / GB/T 905 |
| Width Range | 10 mm – 200 mm |
| Thickness Range | 3 mm – 80 mm |
| Tensile Strength | 480 – 750 MPa |
| Yield Strength | ≥ 415 MPa |
| Surface Hardness | 140 – 220 HB |
| Dimensional Tolerance | ±0.05 mm |
| Available Grades | 1018, 1045, C45, 20Cr, Custom |
| Surface Finish | Bright, Smooth (Ra ≤ 1.6 μm) |
| Length | 3 m – 12 m (custom cut available) |
Get a Competitive Quote for Cold Drawn Flat Steel
Partner with our mill-direct facility to access premium-grade cold drawn flat steel at competitive mill-direct rates. Whether you require standard stock dimensions or custom-cut profiles, our technical team is ready to support your procurement needs with fast lead times, certified quality documentation, and flexible order quantities.
- 24/7 customer support available
- Free samples for quality evaluation
- Competitive pricing for bulk orders
- Professional technical consultation
Contact us today to get your free quote within 24 hours!
Ratings & Reviews
Know your supplier
Product Introduction
Hongji Profiles Co., Ltd. is a professional manufacturer and supplier specializing in the R&D, production and sales of high-quality steel profiles. With years of experience in the metallurgical industry, we have earned a solid reputation for reliability, precision and customer-centric service, providing global clients with premium steel profile solutions for diverse industrial and architectural needs.
Our core business covers a full range of steel profiles, including angle steel, channel steel, I-beams, H-beams, C-section steel, Z-section steel, flat steel and custom special steel profiles. These products are widely applied in building structures, bridges, transmission towers, industrial machinery, automotive components and shipping. We strictly control material selection, adopting high-quality steel grades such as S235JR, S355JR, SS400, A36 and Q355 series to ensure excellent mechanical properties, durability and corrosion resistance.
Guided by a customer-first philosophy, we have built a comprehensive sales and after-sales network. Our products are exported to Europe, North America, Southeast Asia and Africa, with long-term cooperation with well-known enterprises. Our team provides one-stop services, and we ensure prompt delivery through sufficient inventory and optimized logistics.
Upholding “Quality First, Integrity-based, Innovation-driven, Win-Win Cooperation”, Hongji is committed to becoming a global leader in the steel profile industry, continuously improving quality and service to create a better future with global customers.
FAQ
Supplier's customization ability
- Drawing-based customization
- Sample-based customization
- Full customization
Minimum order quantity: 1 ton
Shipping total: To be negotiated
- Lead time:
- confirmed with the quotation
- Packaging:
- standard export packing
- Samples:
- available on request
