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

Technical Specifications of ETP Steel Coil

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.

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.

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.