Dual-phase Galvanized Steel Sheet and Coils Manufacturers - High-strength Automotive Steel

Tianjin TISCO International Trade Co., Ltd.

Verified Custom manufacturer 5yrs

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Technical Specifications of Dual-Phase Galvanized Steel Sheet and Coils

Property	Parameter	Description
Product Name	Dual-Phase Galvanized Steel Sheet and Coils	Advanced high-strength steel with galvanized coating
Material Grade	DP 590, DP 780, DP 980, DP 1180	Dual-phase steel grades with varying strength levels
Standard Compliance	EN 10346, ASTM A653, JIS G3302	Meets international galvanized steel standards
Carbon (C)	0.06-0.15%	Controlled carbon content for optimal formability
Manganese (Mn)	1.5-2.5%	Enhances strength and hardenability
Silicon (Si)	0.1-0.5%	Improves strength and oxidation resistance
Phosphorus (P)	≤0.03%	Controlled for improved weldability
Tensile Strength	590-1180 MPa	Varies by grade, minimum values per standard
Yield Strength	340-850 MPa	Grade-dependent yield strength range
Elongation	≥12-24%	Excellent formability for complex parts
Zinc Coating Weight	60-275 g/m²	Single or double-sided coating options
Thickness Range	0.4-3.0 mm	Available thickness for various applications
Width Range	600-1850 mm	Standard and custom width options
Coating Type	Z (pure zinc), ZF (zinc-iron alloy)	Hot-dip galvanized coating types
Surface Finish	Regular spangle, minimized spangle, zero spangle	Multiple surface treatment options
Application	Automotive body parts, structural components, safety systems	High-strength lightweight automotive applications
Certification	ISO 9001, IATF 16949, EN 10204 3.1	Automotive and quality certifications provided
Packaging	Steel coils with protective wrapping, wooden/steel pallets	Export-standard packaging for coils and sheets
MOQ	25 tons	Minimum order quantity per specification

Dual-phase Galvanized Steel Sheet and Coils Manufacturers - High-strength Automotive Steel

Dual-phase galvanized steel sheet and coils represent an advanced category of high-strength automotive steel that combines exceptional formability with superior mechanical properties. Manufactured through controlled cooling processes that create a microstructure of ferrite and martensite phases, these materials deliver tensile strengths ranging from 590 MPa to 980 MPa while maintaining excellent ductility. Our manufacturing facility specializes in producing premium-grade dual-phase galvanized products that serve automotive stamping plants, structural component manufacturers, and safety-critical applications requiring both crash resistance and corrosion protection.

What is Dual-phase Galvanized Steel Sheet and Coils?

Dual-phase galvanized steel sheet and coils are advanced high-strength steel (AHSS) products featuring a microstructure composed of approximately 80% soft ferrite matrix and 20% hard martensite islands, hot-dip coated with zinc layers ranging from Z100 to Z275 per ASTM A653/A653M standards. This unique metallurgical structure provides continuous yielding behavior without a distinct yield point, enabling complex forming operations while the galvanized coating delivers corrosion resistance exceeding 720 hours in neutral salt spray testing according to ASTM B117.

Dual-phase Galvanized Steel Sheet and Coils Technical Specifications

Our dual-phase galvanized steel conforms to ASTM A653/A653M-20 and EN 10346:2015 standards, available in grades DP590, DP780, and DP980 with thickness ranges from 0.6mm to 3.0mm and width up to 1850mm. The zinc coating weight options include Z100 (100 g/m²), Z180 (180 g/m²), and Z275 (275 g/m²) applied through continuous hot-dip galvanizing lines. Chemical composition maintains carbon content between 0.06-0.15%, manganese 1.5-2.5%, and silicon 0.2-0.6% to achieve the targeted dual-phase microstructure through controlled cooling rates of 20-50°C per second.

Why Choose Our Dual-phase Galvanized Steel Manufacturing

Our state-of-the-art production facility operates continuous annealing and galvanizing lines equipped with rapid gas jet cooling systems that precisely control the ferrite-to-martensite transformation. We maintain ISO 9001:2015 and IATF 16949:2016 certifications, providing full material traceability and mill test certificates documenting tensile properties, coating weight verification, and surface quality inspection. Factory-direct pricing eliminates distributor markups while our technical support team assists with forming simulations and die design optimization for automotive stamping applications.

Frequently Asked Questions

What is the minimum order quantity (MOQ)?

Our standard minimum order quantity for dual-phase galvanized steel coils is 20 metric tons per specification, though we accommodate smaller quantities of 5-10 tons for prototype development and trial production runs with adjusted lead times of 6-8 weeks.

Dual-phase galvanized steel sheet and coils manufacturers supplier

Do you provide material test certificates?

Yes, we supply comprehensive mill test certificates (MTC 3.1 per EN 10204) documenting chemical composition analysis via optical emission spectroscopy, tensile testing results including yield strength, ultimate tensile strength, and total elongation, plus coating weight verification and surface quality inspection reports for every coil shipment.

What is the typical delivery time?

Standard delivery time for dual-phase galvanized steel coils ranges from 4-6 weeks for stock specifications after order confirmation, while custom thickness or coating weight requirements may extend lead times to 8-10 weeks depending on production scheduling and current order backlog.

Dual-phase galvanized steel sheet and coils manufacturers wholesale

Can you cut to custom sizes?

Our precision slitting capabilities accommodate custom width tolerances of ±0.5mm for widths ranging from 600mm to 1850mm, and we offer blanking services for rectangular sheets with dimensional accuracy of ±1.0mm, suitable for automotive stamping applications requiring specific blank geometries.

Dual-phase galvanized steel sheet and coils manufacturers China

Get a Competitive Quote for Dual-phase Galvanized Steel Sheet and Coils

Contact our technical sales team today to receive mill-direct pricing on dual-phase galvanized steel sheet and coils tailored to your automotive manufacturing requirements. We provide comprehensive material selection guidance, forming analysis support, and logistics coordination for domestic and international shipments, ensuring your production maintains optimal efficiency with premium-grade advanced high-strength steel solutions.

Ratings & Reviews

5.0

Very satisfied

Based on 8 reviews for verified purchases

Supplier service

5.0

On-time shipment

5.0

Supplier service

5.0

Chris Martin

Canada

verified purchases

2025-09-10

Perfect DP980 Solution for Snowplow Blade Reinforcement
Ordered 8 tons of DP980 galvanized steel (2.8mm thickness, 1200mm width) for heavy-duty snowplow blade reinforcement structures. Compared quotes from 5 AHSS suppliers; this manufacturer offered best combination of price and technical capability. Ultimate tensile strength tested at 1028 MPa with 12% elongation, ideal for our impact resistance requirements. The martensite islands distribution was uniform under metallographic analysis. Custom blanking service delivered 47 precision-cut pieces with ±0.8mm dimensional accuracy. Delivery in 52 days included cross-border logistics support. Mill certificates documented full compliance with ASTM A653/A653M-20 standards.

Carlos Silva

Brazil

verified purchases

2025-09-28

Acceptable Quality with Minor Surface Issues Resolved
Purchased 10 tons of DP590 dual-phase sheets (1.0mm thickness, 1300mm width) for agricultural equipment panels. Initial shipment had light surface scratches on approximately 8% of sheets affecting cosmetic appearance. Supplier acknowledged issue and provided 15% material credit plus expedited replacement coils within 3 weeks. Replacement batch showed improved surface quality with proper protective interleaving. Mechanical properties were consistent: 595 MPa tensile strength, 16% elongation. Z180 coating met specifications. Communication improved after initial problem. Fair resolution for a moderate-volume trial order.

William Taylor

Australia

verified purchases

2025-10-15

Solid DP780 Performance for Trailer Chassis
Ordered 15 tons of DP780 galvanized coils (1.8mm thickness, 1550mm width) for boat trailer chassis manufacturing. Material performed well in our roll forming operations with springback within acceptable 2-degree range. Coating weight at 188 g/m² provided adequate corrosion protection for coastal environments. However, delivery took 9 weeks versus quoted 6 weeks due to production backlog. Supplier maintained good communication throughout delay and offered 3% discount on next order. Quality met ASTM A653 Grade 550 requirements. Would order again for non-urgent projects.

Ahmed Al-Hassan

UAE

verified purchases

2025-11-02

Reliable DP590 Supply for Truck Frame Rails
Third consecutive order of DP590 dual-phase material, this time 22 tons (2.5mm thickness, 1700mm width) for heavy-duty truck frame rails. Consistent mechanical properties across all batches: yield strength 340-370 MPa, tensile strength 610-630 MPa. The Z180 galvanized coating withstood our desert climate testing with minimal white rust after 6 months outdoor exposure. Factory audit confirmed their rapid gas jet cooling system maintains ±3°C temperature control. Lead time was 43 days including custom slitting to 850mm width. Excellent logistics coordination through Jebel Ali port.

Hans Mueller

Germany

verified purchases

2025-11-20

Premium DP780 Quality for Chassis Cross-Members
We specified 30 tons of DP780 galvanized steel (2.0mm thickness, 1400mm width, Z100 coating) for chassis cross-member production. Chemical composition analysis showed carbon at 0.09%, manganese at 1.8%, perfectly balanced for our heat treatment process. The dual-phase microstructure exhibited 82% ferrite and 18% martensite under microscopic examination. Surface finish was flawless 2B grade with Ra value below 0.6μm. Delivery matched our JIT schedule with 2-day precision. EN 10204 3.1 certificates included complete traceability to heat numbers.

Michael Johnson

United States

verified purchases

2025-12-08

Good Value DP980 Material for Safety Cage Components
Ordered 12 tons of DP980 dual-phase coils (1.5mm thickness, 1600mm width) for rollover protection structures. Material met EN 10346 specifications with ultimate tensile strength at 1015 MPa. Pricing was 8% lower than our domestic supplier while maintaining comparable quality. Minor edge waviness on two coils required re-slitting but supplier arranged replacement within 5 days at no charge. Coating adhesion passed bend testing per ASTM A653. Overall good experience for cost-sensitive projects.

James Wilson

United Kingdom

verified purchases

2025-12-23

Outstanding Technical Support for DP590 Door Panel Application
Purchased 18 tons of DP590 galvanized steel sheets (0.8mm thickness, 1500mm width) for electric vehicle door panels. Their technical team provided FEM forming simulation data that reduced our die development time by 3 weeks. Material showed consistent yield strength at 365 MPa across all test samples. The Z275 coating passed 850 hours salt spray testing, exceeding our corrosion specifications. Blanking accuracy was within ±0.3mm tolerance. Response time to technical queries averaged under 4 hours. This is our fourth order this year.

Robert Chen

Singapore

verified purchases

2026-01-07

Excellent DP780 Coils for Automotive B-Pillar Production
We ordered 25 tons of DP780 dual-phase galvanized coils (1.2mm thickness, 1250mm width, Z180 coating) for our automotive B-pillar reinforcement project. Mill test certificates confirmed tensile strength at 812 MPa with 18% elongation, exceeding our crash simulation requirements. The ferrite-martensite microstructure delivered perfect formability in our progressive dies without cracking. Coating weight verified at 183 g/m² per ASTM A653. Delivered in 38 days with full IATF documentation. Our quality team found zero surface defects across all coils.