DC03 Cold Rolled Steel Coil: EN 10130 Deep-Drawing Grade For Manufacturing

 

DC03 is a cold-rolled low-carbon steel grade defined in EN 10130 for cold forming. It is engineered for deep drawing and complex forming operations: enhanced ductility and uniform properties make it suitable for automotive interior parts, deep-drawn appliance casings, hardware and precision components. It sits between DC01 (general forming) and DC04 (extra deep drawing); select DC03 where a drawn shape exceeds DC01's capability but does not require the tightest drawability of DC04.

 

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The chemical composition of DC03 cold rolled steel coil is meticulously controlled to optimize its forming capabilities, with strict limits on carbon and impurity content to ensure minimal variation across batches. This refined composition reduces the risk of brittleness and ensures consistent plastic deformation during deep drawing, bending, and stretching processes. Manufacturers in Thailand's industrial zones and Indonesia's manufacturing hubs rely on this stability to meet tight tolerance requirements and maintain product integrity across large-scale production runs.

 

Element	Carbon (C)	Manganese (Mn)	Phosphorus (P)	Sulfur (S)	Aluminum (Al)
Max Content (%)	≤0.08	≤0.50	≤0.025	≤0.015	≥0.020

 

 

Complementing its chemical makeup, DC03 exhibits mechanical properties that are optimized for complex forming operations, providing the flexibility and strength needed for intricate component manufacturing. The high elongation rate and superior r-value (plastic strain ratio) of DC03 make it exceptionally resistant to thinning and cracking during deep drawing, a critical feature for manufacturers producing components with varying wall thicknesses. This performance reduces production waste and lowers tooling wear, translating to significant cost savings over time.

 

Property	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (A80, %)	n-value	r-value
Standard Range	270 - 360	140 - 220	≥38	≥0.18	≥1.8

 

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Item	DC03 (typical)
Carbon, max	about 0.08% (set by agreement; EN 10130 defines grades by mechanicals)
Manganese, max	about 0.45%
Phosphorus / Sulfur, max	about 0.035% / 0.035%
Aluminium (Al killed)	about 0.020% min (typical)
0.2% yield strength	about 140–240 MPa
Tensile strength	about 270–370 MPa
Elongation (A80)	≥30% (typical)

EN 10130 classifies grades by mechanical properties rather than fixed carbon limits; the exact chemistry and property window are confirmed by the standard edition and the lot COA.

 

 

EN 10130 designates surface quality classes: DC03-A (best, suitable for visible surfaces), DC03-B and DC03-C (progressively less strict, for parts where surface appearance is not critical). Finishes include bright (2B-type) and matte (2D-type); specify the class and finish for your application. Coils are supplied with protective oil and can be ordered with edge trimming.

 

 

DC03 is widely used by manufacturers in Vietnam, Thailand, Indonesia and other Southeast Asian markets for automotive interiors, appliance housings, and deep-drawn hardware. For export supply, coils are packed with rust-preventive oil, inner vapour-phase protection and sea-worthy steel-wrap or wooden crates; typical transit times and lead times are confirmed at order. Specify width, thickness, surface class, coil weight and quantity to obtain a precise quotation.

 

 

Grade: DC03 per EN 10130 (current edition).

Dimensions: thickness, width, inner diameter, coil weight.

Surface: quality class (A/B/C) and finish (bright/matte).

Documents: mill certificate with chemistry and mechanicals.

 

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GNEE STEEL's DC03 cold rolled steel coil is produced using advanced continuous annealing technology, which ensures uniform microstructure and consistent mechanical properties throughout each coil. Our strict quality control processes include rigorous testing for thickness tolerance, flatness, and surface quality, with every batch meeting or exceeding international standards. The bright, clean surface of our DC03 coils is ideal for post-processing treatments such as painting, electroplating, and galvanizing, ensuring excellent adhesion and a flawless final finish.

 

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Beyond its technical merits, GNEE STEEL provides comprehensive support to DC03 customers, including customized processing services such as slitting to specific widths, cut-to-length sheets, and custom oiling to meet corrosion protection needs. Our flexible delivery options, including FOB, CFR, and CIF terms, ensure timely shipment to major ports in Vietnam, Thailand, and Indonesia, while our experienced export team handles all documentation and customs clearance processes seamlessly.

 

DC03 cold rolled steel coil is more than just a raw material-it's a strategic partner in manufacturing excellence. For industrial terminal manufacturers in Vietnam, Thailand, and Indonesia, GNEE STEEL offers the precision, performance, and service needed to elevate production capabilities.

 

Contact us today with your specific requirements for thickness, width, and quantity, and our team will provide a customized quote and sample support to help you experience the difference that high-quality DC03 can make in your operations.

 

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Frequently Asked Questions

 

Q1. What is the difference between DC01 and DC03?
Both are EN 10130 grades; DC03 is the deep-drawing grade with higher elongation and tighter property control than DC01, suited to drawn parts.

Q2. Is DC03 suitable for visible automotive surfaces?
Yes, when ordered as DC03-A surface quality with the required finish; confirm the surface class at order.

Q3. What sizes are available?
Thickness, width and coil weight ranges depend on the mill; specify your requirement for a quotation.