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Cold Rolled Steel Sheet (CRC)
USI mainly provide flat steel (HRC, HR Plate, CRC, GI, GL,PPGI, etc.), long steel (billet, deformed bar, wire rod, round bar, pipe, etc.) and special steel (high- tensile steel & stainless steel) to end consumers、distributors & trading houses in the world.
Category：
Product Description
Cold Rolled Steel Sheet (CRC)
Application of CRC
The cold rolled steel sheet is mainly used for refrigerator, washing machine, freezer, air conditioner, micro-wave oven, water heater, soot-suck, roaster oven etc. In the other application industries,it is mainly used for enameling, office furniture,burglarproof door, electronic element, fastener, battery, hardware, automotive fitting etc.
Standard: JIS 3141 / ASTM A1008 / EN 10130, etc.
Size available
| Division | Contents | ||
| Thickness | 0.14 - 2.5 MM | ||
| Width | 600-1500 MM | ||
| Unit Coil Weight | 4 - 15 Mt | ||
| Coil ID | 508 / 610 MM |
JIS (Japanese Industrial Standard)
1. Classification & Chemical Composition (only for Reference)
| Class | Symbol | Quality | Chemical Composition | ||||
| C | Si | Mn | P | S | |||
| Class 1 | SPCC | Commercial Quality | 0.15 Max | / | 0.60 Max | 0.05 Max | 0.05 Max |
| Class 2 | SPCD | Drawing Quality | 0.12 Max | / | 0.50 Max | 0.04 Max | 0.04 Max |
| Class 3 | SPCE | Deep Drawing Quality | 0.10 Max | / | 0.45 Max | 0.03 Max | 0.03 Max |
Remarks
1. When the steel sheet and coil of standard temper grade and as-annealed one in quality SPCC are requested by the purchaser to guarantee tensile test values, letter symbol T shall be suffixed to the symbol of quality, thus appears SPCCT.
2. When the steel sheet and coil of standard temper grade in quality SPCE are requested by the purchaser to guarantee non-aging property, letter symbol N shall be suffixed to the symbol of quality, thus appears SPCEN.
2. Mechanical Properties
2_1. Tensile Strength, Elogation and non-aging
| Class | Tension Test | Tensile strength(N/mm2) | Elongation (%) | |||||||
| Division by norminal thickness (mm) / Symbol | 0.25 and over | 0.25-0.3 | 0.3-0.4 | 0.4-0.6 | 0.6-1.0 | 1.0-1.6 | 1.6-2.5 | 2.5 and Over | Tension Test Pieces | |
| Class 1 | SPCC | 270 Min | 28 Min | 31 Min | 34 Min | 36 Min | 37 Min | 38 Min | 39 Min | No. 3 in the direction of rolling |
| Class 2 | SPCD | 270 Min | 30 Min | 33 Min | 36 Min | 38 Min | 39 Min | 40 Min | 41 Min | |
| Class 3 | SPCE | 270 Min | 32 Min | 35 Min | 38 Min | 40 Min | 41 Min | 42 Min | 43 Min | |
Remarks
1. The tension test value does not usually to Class 1. When required by the purchaser, however, the value in paren these applies.
2. For those less than 0.60 mm in thickness, the tension test shall generally be omitted.
3. This Table applies to those of 30 mm or more in width.
4. When the non-aging is designated for the normally refined steel sheet and strip of Class 3, it shall be guaranteed for 6 months after being delivered by the manufacturing factory. The term “non-aging” means the property not to produce stretcher strain during the time of being worked.
5. Units and numerical values indicated within the parentheses(except the value shown in the upper side of the first column and in the following columns in the Class 1 line) are based on the International System of Units(SI)and are added as informative notes, where 1 n/mm²=1 MPa.
2_2. Bending
| Temper Grade | Symbol of Temper Grade | Bend Test | |||
| Bend angle | Inside radius | Test piece | |||
| As annealed | A | 180O | Close contact | No. 3 in the direction of rolling | |
| Standard temper grade | S | 180O | Close contact | ||
| 1/8 hard | 8 | 180O | Close contact | ||
| 1/4 hard | 4 | 180O | 0.5 x Thickness | ||
| 1/2 hard | 2 | 180O | 1.0 x Thickness | ||
| Full hard | 1 | / | / | ||
Remarks
The test maybe omitted for the steel sheet and strip as annealed and standard temper grade.
2_3. Hardness
| Temper Grade | Symbol of Temper Grade | Hardness | ||
| HRB | HV | |||
| 1/8 hard | 8 | 50-71 | 95-131 | |
| 1/4 hard | 4 | 65-80 | 115-150 | |
| 1/2 hard | 2 | 74-89 | 135-185 | |
| Full hard | 1 | 85 Min | 170 Min | |
Remark
Either Rockwell or Vickers hardness shall be used to the hardness.
3. Permissible Variations in Dimension & Shapes
3_1. Thickness Tolerances
(Unit: mm)
| Division by nominal width | Under 630 | 630-1000 | 1000-1250 | 1250-1600 | |
| Division by nominal thickness | |||||
| Under 0.25 | (+/-) 0.03 | (+/-) 0.03 | (+/-) 0.03 | / | |
| 0.25 to 0.40 | (+/-) 0.04 | (+/-) 0.04 | (+/-) 0.04 | / | |
| 0.40 to 0.60 | (+/-) 0.05 | (+/-) 0.05 | (+/-) 0.05 | (+/-) 0.06 | |
| 0.60 to 0.80 | (+/-) 0.06 | (+/-) 0.06 | (+/-) 0.06 | (+/-) 0.06 | |
| 0.80 to 1.00 | (+/-) 0.06 | (+/-) 0.06 | (+/-) 0.07 | (+/-) 0.08 | |
| 1.00 to 1.25 | (+/-) 0.07 | (+/-) 0.07 | (+/-) 0.08 | (+/-) 0.09 | |
| 1.25 to 1.60 | (+/-) 0.08 | (+/-) 0.09 | (+/-) 0.10 | (+/-) 0.11 | |
| 1.60 to 2.00 | (+/-) 0.10 | (+/-) 0.11 | (+/-) 0.12 | (+/-) 0.13 | |
| 2.00 to 2.50 | (+/-) 0.12 | (+/-) 0.13 | (+/-) 0.14 | (+/-) 0.15 | |
| 2.50 to 3.15 | (+/-) 0.14 | (+/-) 0.15 | (+/-) 0.16 | (+/-) 0.17 | |
| 3.15 and over | (+/-) 0.16 | (+/-) 0.17 | (+/-) 0.19 | (+/-) 0.20 | |
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3_2. Width Tolerances (Unit: mm)
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3_3. Length Tolerances (Unit: mm)
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Rmarks To the stretcher-leveler finished steel sheet, plus side tolerance does not apply. |
Rmarks To the stretcher-leveler finished steel sheet, the plus side tolerance does not apply. |
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Key words：
Long Products / Flat Products / Special Products
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