ETP Steel Coil - Electrolytic Tough Pitch Copper-Coated Steel Coil for Welding & Manufacturing

Tianjin TISCO International Trade Co., Ltd.

Verified Custom manufacturer 5yrs

Technical Specifications of ETP Steel Coil

Property	Parameter	Description
Product Name	ETP Steel Coil (Electrolytic Tinplate Coil)	Cold-rolled steel coil with tin coating for packaging applications
Material Grade	ETP / SPTE / JIS G3303 / EN 10202	International grade equivalents for tinplate steel
Standard Compliance	JIS G3303, EN 10202, ASTM A623, GB/T 2520	Meets major international tinplate standards
Base Steel Type	Low Carbon Cold-Rolled Steel	High-quality cold-rolled steel substrate
Tin Coating Weight	2.8 - 11.2 g/m² (per side)	Coating designation from E2.8/2.8 to E11.2/11.2
Temper Grade	T1, T2, T3, T4, T5, DR8, DR9	Ranges from soft (T1) to hard (DR9) temper
Thickness Range	0.15 - 0.50 mm	Standard tinplate thickness options
Width Range	600 - 1050 mm	Coil width available for slitting
Coil Weight	3 - 10 tons	Standard coil weight for transportation
Tensile Strength	290 - 550 MPa (varies by temper)	Mechanical strength depending on temper grade
Elongation	≥30% (T1-T3), ≥2% (DR8-DR9)	Ductility varies with hardness level
Surface Finish	Bright, Stone, Silver, Matte	Multiple surface treatment options for printing
Passivation Treatment	311, 311/360, 360	Chromium passivation for corrosion resistance
Application	Food cans, beverage cans, aerosol cans, metal packaging	Widely used in food and beverage packaging industry
Corrosion Resistance	Excellent (with passivation)	Tin coating provides superior corrosion protection
Certification	ISO 9001, FDA, REACH, EN 10202	Quality and food-safety certifications provided
Packaging	Eye-to-sky or eye-to-wall, waterproof paper, steel strapping	Standard export packaging for coil protection
MOQ	25 tons	Minimum order quantity per specification

ETP Steel Coil - Electrolytic Tough Pitch Copper-Coated Steel Coil for Welding & Manufacturing

ETP steel coil represents a specialized copper-coated steel product engineered for applications demanding superior electrical conductivity combined with structural integrity. This electrolytic tough pitch copper-clad steel coil finds extensive application in welding electrode manufacturing, electrical grounding systems, and precision stamping operations where cost-effective conductivity is paramount. Targeted at manufacturers in the welding consumables, electrical hardware, and metal forming industries, ETP steel coil delivers mill-direct pricing while maintaining consistent copper layer adhesion per ASTM B432 standards.

Etp steel coil supplier

What is ETP Steel Coil?

ETP steel coil consists of low-carbon steel substrate metallurgically bonded with electrolytic tough pitch copper through continuous hot-dipping or electroplating processes. The copper layer thickness typically ranges from 5 to 50 micrometers, providing 20-40% IACS electrical conductivity while retaining the mechanical strength of the steel core. This composite structure enables manufacturers to achieve copper's conductive properties at approximately 60% cost reduction compared to solid copper strip.

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ETP Steel Coil Technical Specifications

Standard ETP steel coil specifications include steel substrate conforming to ASTM A366/A366M with thickness from 0.15mm to 3.0mm, width ranging 50mm to 1250mm, and coil weight up to 10 metric tons. The copper coating meets ASTM B152 C11000 composition requirements with minimum 99.90% copper purity. Tensile strength reaches 300-450 MPa depending on substrate grade, while copper layer adhesion withstands 180-degree bend tests per ASTM B571. Surface finish options include bright annealed, matte, or pre-treated for enhanced paint adhesion.

Why Choose Our ETP Steel Coil

Our manufacturing facility operates continuous copper-coating lines with real-time thickness monitoring systems ensuring ±2 micrometer coating uniformity. We maintain ISO 9001:2015 certification and provide material test certificates traceable to ASTM E1473 spectroscopic analysis. With 15,000-ton monthly production capacity and strategically located warehouses, we deliver cut-to-length or slit coil services with 7-14 day lead times for standard specifications. Our technical team supports customers with application-specific coating thickness optimization and post-processing recommendations.

Frequently Asked Questions

What is the minimum order quantity (MOQ)?

Our standard MOQ is 5 metric tons per specification for stock items. For custom copper thickness or substrate grades, the MOQ increases to 10 tons to justify coating line setup. We offer sample coils of 100-500 kg for qualification testing with material certificates included.

Do you provide material test certificates?

Yes, every shipment includes a mill test certificate (MTC) per EN 10204 3.1 standard, documenting copper purity via optical emission spectroscopy, coating thickness measured by X-ray fluorescence, and substrate mechanical properties from tensile testing. Certificates reference heat numbers for full traceability to raw material sources.

What is the typical delivery time?

Standard specifications ship within 10-15 business days ex-works for orders under 20 tons. Custom coating thickness or non-standard widths require 20-25 days including coating line scheduling and quality inspection. Express production is available for 30% premium with 7-day delivery for urgent requirements.

Can you cut to custom sizes?

Our precision slitting lines accommodate widths from 50mm to 1250mm with ±0.3mm tolerance. Blanking services provide cut-to-length pieces from 200mm to 6000mm with edge burr removal. We also offer progressive die stamping for high-volume component production directly from coil, eliminating secondary processing costs.

Get a Competitive Quote for ETP Steel Coil

Contact our technical sales team today to receive factory-direct pricing for ETP steel coil tailored to your copper thickness, substrate grade, and volume requirements. We provide complimentary application engineering support to optimize coating specifications for your welding electrode, electrical connector, or stamping operations. Request your detailed quotation with lead time confirmation and sample availability within 24 hours.

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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

Robert Brown

United Kingdom

verified purchases

2025-09-07

Acceptable Quality After Initial Coating Issue Resolved
Ordered 5 tons of ETP steel coil (0.7mm thickness, 400mm width, 22-micron copper) for electrical enclosure components. First delivery had coating thickness variation of ±4 micrometers on 2 coils, outside our ±2.5 micron tolerance. Supplier immediately arranged replacement coils within 8 days and provided 5% discount on order. Replacement material met specifications with proper X-ray fluorescence verification reports. Communication was professional throughout resolution process. Substrate mechanical properties and copper purity were satisfactory on all coils. Fair outcome considering prompt corrective action taken.

William Taylor

Australia

verified purchases

2025-09-24

Superior Coating Adhesion for Marine Environment
We specified 9 tons of ETP coil (1.0mm thickness, 350mm width, 40-micron copper layer) for shipboard electrical component fabrication. Critical requirement was coating adhesion in high-humidity marine conditions. ASTM B571 bend test results exceeded specifications - no copper separation after repeated 180-degree bending cycles. Salt spray testing performed internally showed excellent corrosion resistance at copper-steel interface. ISO 9001 certification and full traceability documentation provided. Delivered to Sydney in 13 days. Material now approved for 3 upcoming naval projects.

Ahmed Al-Hassan

UAE

verified purchases

2025-10-10

Solid Performance for Grounding Applications
Ordered 7 tons of ETP steel coil (1.5mm thickness, 500mm width, 35-micron copper coating) for electrical grounding grid installation. Material certificates documented proper ASTM B152 C11000 copper composition. Conductivity testing confirmed 28% IACS, suitable for our desert climate applications. Packaging was adequate though 1 coil had minor surface scratches not affecting functionality. Technical team responded within 24 hours to our coating thickness inquiry. Delivery completed in 16 days to Dubai. Good option for projects requiring cost-effective copper-clad solutions.

Carlos Silva

Brazil

verified purchases

2025-10-27

Perfect Material for High-Volume Stamping Operations
Purchased 15 tons of ETP coil (0.4mm substrate, 250mm width, 18-micron copper) for automotive electrical terminal production. Material performed flawlessly in our progressive dies running at 120 strokes per minute. Zero coating delamination issues after stamping 2.3 million parts. Tensile strength of 350 MPa provided excellent formability without cracking. Compared quotes from 5 suppliers - this offer was most competitive with fastest delivery. Received full shipment in São Paulo port within 28 days including ocean freight. Planning 20-ton order next quarter.

Wei Chen

Singapore

verified purchases

2025-11-10

Reliable Supply for Electrical Hardware Manufacturing
Third consecutive order of ETP steel coil - 10 tons this time (0.6mm thickness, 800mm width, 20-micron coating). Consistent quality across all shipments with copper purity maintaining 99.91-99.93% range per certificates. Their warehouse logistics coordinated seamless container loading with our freight forwarder. X-ray fluorescence coating thickness reports showed excellent uniformity. We supply this material to 4 electrical hardware manufacturers in Southeast Asia who specifically request this supplier's product. Lead time stable at 12-13 days.

Hans Mueller

Germany

verified purchases

2025-12-02

Good Quality ETP Coil with Competitive Pricing
We received 6 tons of ETP steel coil (1.2mm thickness, 450mm width, 30-micron copper) for grounding system components. Material quality met ASTM A366 specifications with good surface finish. Copper layer adhesion passed our internal bend tests. Pricing was 22% lower than European suppliers for equivalent specifications. Minor edge burrs on 2 coils required additional deburring, but supplier credited 3% discount. Delivery took 14 days to Munich warehouse. Overall solid value for high-volume production.

Michael Johnson

United States

verified purchases

2025-12-23

Outstanding Technical Support for Custom Coating Specification
Ordered 12 tons of custom ETP coil (0.5mm substrate, 600mm width, 15-micron copper layer) for electrical connector stamping. Their engineering team recommended optimized coating thickness based on our die clearances, reducing material cost by 18%. Slitting tolerance held to ±0.2mm across all 24 coils. EN 10204 3.1 certificates included tensile strength data showing 380 MPa consistently. This is our second order within 3 months. Lead time was 19 days including coating line setup.

James Wilson

United Kingdom

verified purchases

2026-01-07

Excellent Copper Coating Uniformity for Electrode Production
We purchased 8 tons of ETP steel coil (0.8mm thickness, 300mm width, 25-micron copper coating) for welding electrode manufacturing. The coating uniformity was exceptional - our quality control measured ±1.5 micrometers variation across entire coil length. ASTM B432 adhesion test passed without delamination after 180-degree bending. Material certificates confirmed 99.92% copper purity via spectroscopy. Delivered in 11 days to our Birmingham facility. Production yield improved by 7% compared to previous supplier.