What Is DC01 Steel
DC01 steel, material number 1.0330, is a European standard cold-rolled quality low-carbon steel flat product for cold forming, specified in DIN EN 10130. The designation DC01 indicates a steel for cold forming with controlled chemical composition and mechanical properties. The former German designation ST12 was replaced by DC01 when DIN 1623 was superseded by DIN EN 10130, so modern specifications always refer to DC01 for this grade.
Is DC01 the Same as CR4
DC01 is commonly referred to as CR4 in the UK steel trade, where CR designates cold reduced sheet and 4 indicates the quality level within the old British classification. In practice, DC01 and CR4 describe the same type of material: a general-purpose cold rolled mild steel supplied in thicknesses from about 0.9 mm up to 3 mm for bending, shallow forming, and general fabrication. When specifying material, the EN designation DC01 per EN 10130 should be used to avoid ambiguity.
The DC Grade Family
The DC family in EN 10130 covers increasing formability requirements. DC01 is the basic grade for simple bending and shallow forming; DC03 provides improved drawing properties; DC04 is a deep-drawing grade with excellent deep-drawing properties under all types of deformation, suitable for high forming requirements; DC05 and DC06 provide even deeper drawing capability for complex automotive parts. The grade choice is determined by the depth and complexity of the forming operation.
Equivalents of DC01
DC01 (1.0330) has equivalents across major standard systems: in the American system, ASTM A1008 CS Type B is a common functional equivalent; in Japan, JIS G3141 SPCC; and in China, the former Q195-215A type grades or 08Al steel are often considered. Equivalents share similar strength and forming characteristics but are not always direct substitutions, so the applicable standard and final properties should be verified for critical applications.
DX51D as the Galvanized Counterpart
When corrosion protection is required, DC01-type cold rolled steel is supplied as DX51D+Z hot-dip galvanized coil with zinc coatings from Z100 to Z275 and above. DX51D is the EN 10346 grade for continuous hot-dip coated steel for cold forming, providing the formability of the DC family with sacrificial anode corrosion protection. The combination of cold rolled substrate and zinc coating serves roofing, appliances, automotive, and general fabrication.
Frequently Asked Questions
Q: What is DC01 steel equivalent to?
A: DC01 (1.0330) is equivalent to the former ST12 per DIN 1623, and is functionally similar to SPCC per JIS G3141, ASTM A1008 CS Type B, and Q195-215A type grades in the Chinese system.
Q: Is DC01 the same as CR4?
A: Yes, CR4 is the British trade designation for the same cold reduced mild steel described by DC01, supplied in similar thickness ranges for general forming.
Q: What is DC04 material?
A: DC04 is a deep-drawing steel of the DC family with excellent deep-drawing properties under all types of deformation, suitable for high forming requirements.
Q: What is the chemical composition of DC01?
A: Per EN 10130, carbon is 0.12 percent maximum, manganese 0.60 percent maximum, phosphorus 0.045 percent maximum, and sulfur 0.045 percent maximum.
Q: What are the mechanical properties of DC01?
A: The yield strength is 280 MPa maximum, tensile strength 270 to 410 MPa, and elongation A80 is 28 percent minimum for the Q temper condition.
Q: When should DX51D be used instead of DC01?
A: When corrosion resistance is required: DX51D+Z provides the same formability as cold rolled steel with a zinc coating protecting the base metal.
For DC01 cold rolled and DX51D galvanized coil quotations with your required thickness, width, and coating, contact our sales team.