The roll and the tablet are almost a cut package. The chilled coil is obtained by pickling and cold rolling the hot rolled coil. It can be said that it is a kind of cold rolled coil. Cold rolled coil (annealed state): The hot rolled coil is obtained by pickling, cold rolling, hood annealing, leveling, (finishing). There are 3 main differences between them:
In appearance, the general chilled coil is a bit sloppy.
In appearance, the general chilled coil is a bit sloppy.
Cold rolled sheets such as surface quality, structure and dimensional accuracy are better than chilled coils.
In terms of performance, the chilled coil obtained directly after the cold rolling process of the hot rolled coil is work hardened during cold rolling, resulting in an increase in yield strength and a part of internal stress remaining, and the external appearance is relatively "hard". It is called chilled coil.
| Material category | Baosteel Enterprise Standard | National standard | Japanese Industrial Standard | German industry standard | European standard | American Society for Testing Materials Standards | Remarks | |
|---|---|---|---|---|---|---|---|---|
| Brand | Brand | Brand | Brand | Brand | Brand | |||
| Cold rolled low carbon and ultra low carbon steel sheets and strips | Commercial grade (CQ) | SPCCST12 (German standard) | Q19510-P10-S08-P08-S08AI-P08AI-S | SPCC | ST12 | FeP01 | ASTMA366/A366M-96 (replaced by ASTM A366/A366M-97) | Q195 in 1.1GB11253-89 is a common carbon structural steel. 2.2 Such steel can be used for the production of automotive parts, furniture shells, barrel steel furniture and other simple forming, bending or welding products. |
| Stamping level (DQ) | SPCDST13 | 10-Z08-Z08AI-Z | SPCD | USt13RRSt13 | FeP03 | ASTMA619/A619M-96 (obsolete after 1997) | It can produce parts for stamping and more complex deformation processing such as automobile doors, windows, fenders, and motor casings. | |
| Deep drawing (DDQ) | SPCE-FSPCE-HFSPCE-ZFST14-FST14-HFST14-ZFST14-T | 08AI-F08AI-HF08AI-ZF | SPCE | ST14 | FeP04 | ASTMA620/A620M-96 (replaced by ASTM A620/A620M-97) | 1.1. It can produce deep-drawing parts such as automobile front lights, mailboxes, windows, etc., as well as complex and severely deformed parts. 2.2.Q/BQB403-99 The newly added ST14-T is exclusively for Shanghai Volkswagen. | |
| Deep Drilling (SDDQ) | ST15 | FeP05 | It can produce very complicated parts such as car mailboxes, front lights, and complex car floors. | |||||
| Ultra deep drawing (EDDQ) | ST16BSC2 (BIF2) BSC3 (BIF3) | FeP06 | 1.1. This type is ultra deep-drawn without gaps. 2.2. 1F18 in the FeP06 area agent SEW095 of EN 10130-91. |
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