ST12 Cold Rolled Coil_DIN1623 Cold Rolled Steel Sheet_Press-Forming Ready Stock Manufacturer
ST12 Cold-Rolled Coil is a DIN1623 general-purpose cold-rolled carbon steel coil designed for stamping. It features a smooth, flat surface, high dimensional accuracy, and stable bending and stamping performance. Available in standard thicknesses from 0.4 to {3.0} mm, it can be supplied as slit or cut-to-length sheets. Full mill stock is available with material certificates provided. Widely used in home appliances, enclosures, hardware sheet metal, and automotive interior parts manufacturing.
ST12 Cold-Rolled Coil: Basic Overview
ST12 cold-rolled coil isDIN 1623ST12 cold-rolled carbon steel sheet is a standard commercial stamping grade widely used in industrial manufacturing. With excellent surface quality, stable formability, and exceptional value, it is extensively applied in sheet metal fabrication, home appliance production, electrical equipment, and hardware components. ST12 serves as the mainstream alternative to SPCC and DC01 cold-rolled materials and remains a staple raw material for most processing facilities.
In the German standard cold-rolled grade system, ST12 represents a basic commercial drawing grade suitable for conventional bending, shallow drawing, welding, and painting processes.Not suitable for deep drawingFor complex deep-drawn parts, upgrade to ST13 or ST14 deep-drawing grade cold-rolled coils.
1. ST12 Material Grade Benchmark Analysis
ST12 is a classic German standard cold-rolled steel sheet with high interchangeability to mainstream domestic and international cold-rolled grades. Procurement benchmarking references are as follows:
German Standard: ST12 (DIN1623) General Drawing Quality
Japanese Standard: SPCC Commercial Cold-Rolled Sheet
European Standard: DC01 General Cold-Rolled Sheet
Use CasesAll three can be used interchangeably for standard bending and shallow drawing; deep drawing is not interchangeable.
II. Core Performance Advantages of ST12 Cold-Rolled Coil
ST12 cold-rolled coil is produced using high-precision cold rolling and finishing. Compared to hot-rolled sheets, it offers significant performance advantages:
Premium surface textureFlat, smooth surface free of scale, pitting, or scratches. High surface cleanliness requires no secondary grinding and is ready for painting, powder coating, or electroplating. Delivers a refined finish ideal for visible decorative components.
Precision dimensional accuracyStrict control of thickness, width, and flatness tolerances ensures consistent shape and resistance to deformation. Ideal for automated stamping and bending production lines, it reduces scrap rates and boosts manufacturing efficiency.
Stable processing performanceLow-carbon material with excellent toughness; withstands bending up to 90° without cracking. Offers superior performance in punching, shallow drawing, and welding, fully meeting standard sheet metal forming requirements.
Outstanding valueDomestic suppliers from major steel mills such as Baosteel, Ansteel, and Benxi Steel offer ample stock, stable inventory, and competitive pricing—ideal for large-scale production of standard industrial parts with significant cost savings.
Storage Usage Reminder: ST12 is cold-rolled sheet with no anti-rust coating. It rusts easily in humid environments; store in a dry, ventilated warehouse and apply corrosion protection immediately after processing.
III. Common Specifications
Execution Standard: DIN1623 German Standard
Standard thickness: 0.4mm, 0.5mm, 0.6mm, 0.8mm, 1.0mm, 1.2mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm
Standard Width: 1000mm, 1250mm, 1500mm; supports custom strip widths
Supply Format: Cold-rolled coils, slit and leveled sheets, slitted strips, and cut-to-size plates
Major steel millsAuthentic products from Baosteel, Ansteel, Benxi Steel, and Maanshan Steel. Material quality certificates provided with shipment.
IV. Key Application Areas
ST12 cold-rolled coils are highly versatile, covering a wide range of sheet metal fabrication scenarios across multiple industries:
Home AppliancesRefrigerators, washing machines, air conditioners: outer casings, internal brackets, back panels, and other components
Electrical Equipmentdistribution boxes, distribution cabinets, industrial control chassis, equipment enclosures, electrical housings
Hardware Sheet MetalMetal file cabinets, warehouse racking, lighting accessories, and various standard stamped hardware parts
Auto Parts: Automotive interior trim panels, non-load-bearing stamped components, and body auxiliary accessories
General ManufacturingFor ventilation ducts, equipment guards, and sign substrates; serves as a base material for galvanized or color-coated sheets.
5. Differences Between ST12, ST13, and ST14 Grades (Procurement Guide)
ST12Standard commercial stamping grade; suitable for bending, shallow drawing, and flat forming. Best value and widely used.
ST13: Standard deep-drawing grade; improved elongation for medium-depth drawing applications.
ST14Premium deep-drawing grade: high toughness and elongation, engineered for complex deep-drawn parts.
Procurement Recommendation: For simple forming or shallow drawing, select ST12. If cracking or deep-drawing deformation occurs during stamping, promptly switch to deep-draw grades ST13 or ST14.
VI. Supply and Processing Services
Long-term spot supply of genuine ST12 cold-rolled coils. We provide one-stop steel processing and distribution services to meet diverse customer customization needs.
Precision leveling and custom-length cutting of steel coils, tailored to your specifications.
Steel coil longitudinal slitting and processing of various narrow steel strips.
Supports both small-batch samples and large-volume orders.
Provides official material certification and warranty documents; nationwide logistics delivery.
VII. Frequently Asked Questions (FAQ)
Q1: Can ST12, SPCC, and DC01 be used interchangeably?
All three are general-purpose commercial cold-rolled sheets with similar base material properties and can be used interchangeably for standard bending and shallow drawing. If the customer's drawings specify strict requirements or deep-drawing applications, procure strictly according to the designated grade.
Q2: Does ST12 cold-rolled coil rust easily?
A: ST12 is a cold-rolled sheet without anti-rust coating. It oxidizes and rusts easily when exposed to air, so it must be stored in dry conditions. Finished products require anti-corrosion treatments such as painting or galvanizing.
Q3: Can ST12 material be used for deep drawing?
No. ST12 has limited elongation; deep drawing can easily cause cracking or deformation. For deep-drawn parts, always use ST13 or ST14 materials.
Q4: Does ST12 cold-rolled sheet require grinding and painting?
The surface is naturally smooth, clean, and free of impurities or oxide scale. After simple degreasing, it can be directly painted, powder-coated, or electroplated without sanding.