CRCA Components Manufacturer in Chennai
Precision Cold Rolled Close Annealed (CRCA) steel stampings, automotive wiper motor covers, brush plates, and PCB box brackets. Manufactured with progressive die tooling and verified ±0.1mm dimensional consistency in Chennai.
Material Data
CRCA steel stamping & mechanical properties
Guaranteed tensile elongation, hardness, and chemical purity backed by certified Mill Test Reports.
| Material Specification | Cold Rolled Close Annealed (CRCA) Steel — IS 513 / EN 10130 DC01, DC03, DC04 |
| Drawing Quality Grades | Commercial (CR1/O), Drawing (CR2/D), Deep Drawing (CR3/DD), Extra Deep Drawing (CR4/EDD) |
| Tensile Strength | 270 – 410 MPa (depending on drawing grade) |
| Elongation (A80) | 28% to 40% Min (superior ductility for deep forming without necking) |
| Thickness Range | 0.3 mm to 3.2 mm sheet and coil |
| Surface Finish Condition | Matte finish (Ra 0.6 – 1.9 µm) optimized for paint and plating adhesion |
| Post-Processing Treatments | Zinc electroplating (trivalent yellow/blue), powder coating, phosphate pre-treatment |
| Production Tolerance | ±0.1 mm across standard stamped automotive parts |
Tooling Engineering
Engineering considerations for high-yield CRCA stampings
CRCA steel delivers exceptional drawing and formability when tooling punch radii and lubrication are accurately matched to sheet gauge.
1. Controlled Draw Radii
For formed parts like wiper motor covers, die draw radii are polished and sized to 4–6 times metal thickness to prevent wall thinning or wrinkling in corner zones.
2. Flatness Control
Internal blanking stresses are managed through symmetrical compound punching, pressure pads, and coil leveling to maintain strict flange flatness for gasket sealing.
3. Surface Coating Adhesion
CRCA matte surface texture provides an optimal mechanical anchor for electroplating and powder coating. We verify dry film thickness (DFT) on every finished batch.
Components
Typical CRCA components stamped at our Chennai plant
High-volume automotive OEM and industrial sub-assemblies.
Wiper Motor Cover Plates
Stamped from IS 513 D grade CRCA steel with shallow drawn pockets and mounting holes holding strict center-to-center pitch.
Maruti Suzuki Tier-IIIMotor Brush Plate Stampings
Structural base plates for automotive fractional horsepower DC motors, precision punched and ready for semi-automatic contact riveting.
Automotive MotorsPCB Box Protective Brackets
Formed structural metal enclosures providing mechanical mounting and EMI shielding for sensitive automotive electronic control modules.
Automotive ElectronicsFAQ
CRCA stamping frequently asked questions
Why is CRCA steel the primary choice for automotive stampings?
CRCA (Cold Rolled Close Annealed) steel undergoes cold reduction and controlled annealing, resulting in uniform grain structure, tight sheet thickness tolerances, superior surface smoothness, and high elongation. This allows deep draws and complex sharp bends without surface cracking or thinning.
How does Space Auto Parts ensure excellent powder coating or plating on CRCA parts?
We inspect CRCA incoming coil surfaces for rust, mill oil, or pitting. After stamping, parts undergo rotary deburring and degreasing. Post-coating, we measure dry film thickness (DFT) and total film thickness (TFT) with calibrated electronic gauges to guarantee automotive corrosion specifications.
What automotive components does Space Auto Parts stamp from CRCA steel?
As a certified Maruti Suzuki Tier-III supplier, we manufacture wiper motor cover plates, motor brush plate stampings, cable retention clips, PCB box structural brackets, and regulator moulding inserts from CRCA coil and sheet.
Can you supply CRCA stampings with tight flatness requirements?
Yes. For parts like wiper motor covers and gear assembly plates where sealing flatness is critical, we use precision coil leveling, compound flatten-and-pierce dies, and post-stamping inspection on Mitutoyo granite surface tables.
CRCA Steel Quotation
Submit your CRCA component drawing for review
Send your 2D PDF drawing or 3D CAD models. Our Chennai engineering team provides tooling and piece-part quotes within 1–2 business days.