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General Steel (SPCC) Spec Table
General Steel (SPCC) KS Specifications — 13 sizes
KS D 3512
Minimum bend radius (R) and height (L) for general cold-rolled steel (SPCC). Design above minimum values to prevent cracking.
Practical Notes
- Min inside R = 0–0.5t (t: sheet thickness). Zero-R bending possible but micro-cracks risk above 1.6mm.
- Bending perpendicular to rolling direction allows smaller R. Cross-direction has better ductility.
KSGeneral Steel (SPCC)
13 sizes| Thickness t | Material | Min R | Min L | Type | Note |
|---|---|---|---|---|---|
| 0.3 | SPCC | 0.3 | 1.2 | Cold Rolled (SPCC) | 90° , Mild Steel |
| 0.4 | SPCC | 0.4 | 1.6 | Cold Rolled (SPCC) | 90° , Mild Steel |
| 0.5 | SPCC | 0.5 | 2.0 | Cold Rolled (SPCC) | 90° , Mild Steel |
| 0.6 | SPCC | 0.6 | 2.4 | Cold Rolled (SPCC) | 90° , Mild Steel |
| 0.8 | SPCC | 0.8 | 3.2 | Cold Rolled (SPCC) | 90° , Mild Steel |
| 1.0 | SPCC | 1.0 | 4.0 | Cold Rolled (SPCC) | 90° , Mild Steel |
| 1.2 | SPCC | 1.2 | 4.8 | Cold Rolled (SPCC) | 90° , Mild Steel |
| 1.4 | SPCC | 1.4 | 5.6 | Cold Rolled (SPCC) | 90° , Mild Steel |
| 1.6 | SPCC | 1.6 | 6.4 | Cold Rolled (SPCC) | 90° , Mild Steel |
| 2.0 | SPCC | 2.0 | 8.0 | Cold Rolled (SPCC) | 90° , Mild Steel |
| 2.3 | SPCC | 2.3 | 9.2 | Cold Rolled (SPCC) | 90° , Mild Steel |
| 2.6 | SPCC | 2.6 | 10.4 | Cold Rolled (SPCC) | 90° , Mild Steel |
| 3.2 | SPCC | 3.2 | 12.8 | Cold Rolled (SPCC) | 90° , Mild Steel |
Key Features
- Cold-rolled SPCC standard; minimum inside bend radius (R) table relative to plate thickness (t)
- Range t0.5–3.0 mm; minimum R differs by rolling direction (longitudinal/transverse)
- Transverse bend R ≥ 0.8t, longitudinal bend R ≥ 1.0t as general guideline
Key Applications
Appliance sheet metal cases, office furniture, electrical distribution boxes, interior building materials, general machine covers
FAQ
Minimum bend R for SPCC?
At t1.0, minimum R = 0–0.5mm (0t–0.5t). However, zero-R bending risks micro-cracks above t1.2mm — R ≥ 0.5t recommended for safety.