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Cold Rolled Steel Sheet (TOP)
Materials
Base material coil tempering classifications |
| Comparable JIS Standards |
Company Types |
Hardness |
| Type |
Tampering Classification |
Tempering Code |
Contents and Features |
Hv |
HR-30T |
HRB |
| SPCC |
A |
A |
As annealed |
Less than 105 |
Less than 53 |
Less than 57 |
| S |
SN |
Standard tempering (Uses where tie is not needed) |
Less than 115 |
Less than 58 |
Less than 65 |
| SB |
ditto (Surface roughness prevention measures) |
| SA |
ditto |
| SO |
ditto |
| SE |
ditto (Tie uses) |
| 8 |
8 |
1/8 hardness |
95 to 130 |
48 to 62 |
50 to 71 |
| SUS |
ditto (Manufactured using continuous annealing method) |
| 4 |
4M |
1/4 hardness |
115 to 150 |
58 to 68 |
65 to 80 |
| SU4 |
ditto (Manufactured using continuous annealing method) |
| SU5 |
ditto (ditto) |
| 2 |
2 |
1/2 hardness |
135 to 185 |
64 to 74 |
74 to 89 |
| 2C |
ditto (Manufactured using continuous annealing method) |
| 1 |
1 |
Hardness |
More than 170 |
More than 71 |
More than 85 |
| SPCD |
A, S |
SD |
Deep Tie Uses |
Less than 115 |
Less than 58 |
Less than 65 |
| SPCE |
A, S |
SDE |
Deep Tie Uses |
Less than 115 |
Less than 58 |
Less than 65 |
Chemical Composition |
(WT%) |
| Type |
C |
Mn |
P |
S |
Fe |
| SPCC |
Less than 0.12 |
Less than 0.50 |
Less than 0.040 |
Less than 0.045 |
Bal |
| SPCD |
Less than 0.10 |
Less than 0.45 |
Less than 0.035 |
Less than 0.035 |
Bal |
| SPCE |
Less than 0.08 |
Less than 0.40 |
Less than 0.030 |
Less than 0.030 |
Bal |
Surface finish
| Surface finish classification |
Code |
Description |
Company Types |
| Dull Finish |
D |
Matte finish using roll that mechanically roughens surface. |
Type 5 |
| Bright Finish |
B |
Smooth finish using roll that makes a smooth finish. |
Type 6 |
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