Cold Rolled Steel
Specifications
JIS G 3141 SPCC, SPCD, SPCE JIS G 3311 (Carbon, Alloy, Tool Steel) ASTM A 109, ASTM A 366, ASTM A 619, ASTM A 620, BS 1449/1, BSEN 10130-91, BSEN 10131-92 DIN 1624-87, DIN 1623/2-86 ISO 3474-86 (CR 1/2/3/4), ISO 5954-84(CRH 50/60/70) Australia/N.Z. AS1595 NZCC NZCE, CA-2SE/CA55NE
Quality of JIS G 3141
commercial quality is used for simple bending, forming or drawing, and has a wide range of uses for automotive, home appliances, building and civil works and base metals for various kinds of prepainted steel products. drawing quality is used for better than the commercial quality, it's high formability is used for automotive panels, audio-visual equipment and other heating apparatuses. deep drawing quality is used for the parts of complicated and severe forming products, mainly for the automotive front panels and rear fenders.
| Symbol of the Quality | Chemical Composition(% max.) | ||||
| C | Mn | P | S | ||
| SPCC | Commercial Quality | 0.12 | 0.50 | 0.040 | 0.045 |
| SPCD | Drawing Quality | 0.10 | 0.45 | 0.035 | 0.035 |
| SPCE | Deep Drawing Quality | 0.08 | 0.40 | 0.030 | 0.030 |
Dimensions
| Thickness(mm) | Width(mm) | Length(mm) | Coil I.D.(mm) | Coil Weight |
| 0.15-3.00 | 30-1,830 | 12,500 x C | 420-610 | 2-20MT |
Temper Grade
| Temper Grade | Symbol | Hardness(HRB) | Hardness(Hv) |
| As Annealed | A | ||
| Standard Temper | S | ||
| 1/8 Hard | 8 | 50-71 | 95-130 |
| 1/4 Hard | 4 | 65-80 | 115-150 |
| 1/2 Hard | 2 | 74-89 | 135-185 |
| Full Hard | 1 | 85 min | 170 min |
Surface Finish
D (Dull Finish) - matt finish produced with a roll roughened its surface mechanically or chemically B (Bright Finish) - smooth finish produced with a roll finish its surface smoothly
Standard Packing
Special care is given to prevent abrasion, rust and scratch during transportation and shipment, the procedures are illustrated as follows. Unit weight is usually 2-5mt for sheet, 4-20mt for coils upon to the request.
