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| Categories | Cold Rolled Steel Coil |
|---|---|
| Brand Name: | GNEE |
| Certification: | SGS |
| Place of Origin: | China |
| Price: | Negotiable |
| Payment Terms: | Negotiable |
| Supply Ability: | 100 ton/week |
| Delivery Time: | 5-9 working days |
| Packaging Details: | Sea-worthy packing, ie wooden or steel tray with steel strip,etc |
| Company Info. |
| Gnee Steel (tianjin) Co., Ltd. |
| Verified Supplier |
| View Contact Details |
| Product List |
Cold rolled steel coil is hot rolled steel coil as raw material,
after pickling to remove the oxide skin for cold continuous
rolling, the finished product is rolled hard coil, due to
continuous cold deformation caused by cold hardening of rolled hard
coil strength, hardness, toughness and plastic indexes decline, so
the stamping performance will deteriorate, can only be used for
simple deformation of the parts. Rolled rolls can be used as raw
materials for hot-dip galvanising plants, because hot-dip
galvanising units are equipped with annealing lines. Rolled hard
coil weight is generally 6 ~ 13.5 tonnes, the inner diameter of the
coil is 610mm/508mm.
General cold rolled plates and coils should be continuously
annealed (CAPL unit) or annealed in the hood furnace to eliminate
cold hardening and rolling stress, to achieve the mechanical
properties specified in the corresponding standards.
Cold rolled steel plate surface quality, appearance, dimensional
accuracy are better than hot rolled plate, and the thickness of its
products right rolled thin to 0.18mm or so, so favoured by the
majority of users. Cold rolled steel coil as a substrate for the
deep processing of products, become high value-added products. Such
as electro-galvanized, hot-dip galvanized, fingerprint-resistant
electro-galvanized, colour-coated steel coils and vibration-damping
composite steel, PVC laminated steel.
Advantages of cold rolled steel:
(1) Higher precision, cold rolled strip thickness difference of no
more than 0.01~0.03mm.
(2) Thinner dimensions, cold rolled thinnest can be rolled 0.001mm
steel strip; hot rolled can now be as thin as 0.78mm.
(3) Superior surface quality, cold rolled steel plate can even
produce a mirror surface; while the surface of the hot rolled plate
has iron oxide,pockmarks and other defects.
(4) Cold rolled plate can be adjusted according to user
requirements of its school performance such as tensile strength and
process performance such as stamping performance.

| Deliverable Grade | ||||||||
| Standard | Q/BQB 408 | JIS G3141 | JFS A2001 | EN 10130 | DIN 1623 | ASTM A1008 | GB/T 5213 | ISO 3574 |
| Grade | BLC | SPCC | JSC270C | DC01 | St12 | CS | CR1 | |
| BLD | SPCD | JSC270D | DC03 | RRSt13 | DS | CR2 | ||
| BUSD | SPCE | JSC270E | DC04 | St14 | DDS | SC1 | CR3 | |
| BUFD | SPCF | JSC270F | DC05 | EDDS | SC2 | CR4 | ||
| BSUFD | JSC260G | DC06 | SC3 | CR5 | ||||
| Standard | Grade | Chemical Composition of Cold Rolled Mild Steel(%) | Mechanical properties of cold rolled steel | ||||||
| C | Si | Mn | P | S | Yielding Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | ||
| JIS G3141 | SPCC | 0.15 max | - | 0.60 max | 0.10 max | 0.05 max | |||
| SPCD | 0.12 max | - | 0.50 max | 0.04 max | 0.04 max | ≤ 240 | ≥ 270 | ≥ 41 | |
| SPCE | 0.10 max | - | 0.45 max | 0.03 max | 0.03 max | ≤ 220 | ≥ 270 | ≥ 43 | |
| SPCF | 0.08 max | - | 0.45 max | 0.03 max | 0.03 max | ≤ 210 | ≥ 270 | ≥ 45 | |
| JIS G3141 Surface quality classification: B-finish; D-mirror finish Heat treatment or state: A - annealed; S - tempered , 8 -1/8 hard, 4-1/4 hard, 2-1/2 hard, 1-hard | |||||||||
| EN 10130 | DC01 | 0.12 max | - | 0.60 max | 0.045 max | 0.045 max | 140-280 | 270-410 | ≥ 28 |
| DC03 | 0.10 max | - | 0.45 max | 0.035 max | 0.035 max | 140-240 | 270-370 | ≥ 34 | |
| DC04 | 0.08 max | - | 0.40 max | 0.030 max | 0.030 max | 140-210 | 270-350 | ≥ 38 | |
| DC05 | 0.06 max | - | 0.35 max | 0.025 max | 0.025 max | 140-180 | 270-330 | ≥ 40 | |
| DC06 | 0.02 max | - | 0.25 max | 0.020 max | 0.020 max | 120-170 | 270-330 | ≥ 41 | |
| Surface type: A, B; Surface specification: b=special smooth,
g=smooth, m=non-glossy, r=rude Example of plate naming: EN 10130+A1-DC03-B-g where B is the surface type and g indicates that the surface specification is smooth | |||||||||


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