When ordering SPCC products, the hardness and surface must be specified in advance.
①Hardness
| Heat treatment system | Code name | Hardness | |
|
HRBS |
HV10 |
||
| Annealing |
A |
- |
- |
| Annealing + finishing |
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 |
|
Hard |
1 |
≥85 |
≥170 |
②Surface quality
| Level | Name | Characteristics |
|
FB |
Higher level finishing surface |
Does not affect formability and coating and plating adhesion defects, such as small bubbles, small scratches, Small roller marks, slight scratches and oxidized color, etc. Allowed to exist. |
|
FC |
Premium finishing surface | The better side of the two sides of the steel plate must further limit defects and have no visible defects, and the other side should meet the requirements of the FB surface. |
|
FD |
Ultra-premium finishing surface | The better side of the two sides of the steel plate must further limit the defects, that is, it does not affect the appearance quality after painting or electroplating, and the other side should meet the requirements of the FB surface. |
③Surface structure
| Surface structure | Code name | Average roughness Ra/μm |
| Pockmarked noodles |
D |
0.6～1.9 |
| Shiny side |
B |
≤0.9 |
>> Brand comparison
|
JIS G 3141 |
GB/T 5213 |
DIN |
ASTM A1008 |
|
|
2008 |
2001 |
|||
|
DC01 |
08Al |
St12 |
CSC |
|
|
DC03 |
- |
St13 |
CSA,CSB |
|
|
DC04 |
SC1 |
St14 |
DSA,DSB |
|
|
DC05 |
SC2 |
St15 |
DDS |
|
|
SPCG |
DC06 |
SC3 |
St16 |
EDDS |
|
- |
DC07 |
- |
St17 |
- |
