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SECD chromate-free Anti-fingerprinting electrogalvanized steel sheet mechanical properties specified value:
|
Mechanical properties specified value |
|||||||
|
Symbol |
Aging characteristics( stretcher strain) |
Yield strength MPa |
Tensile strength MPa |
(L0=50mm, b=25mm)% 不小于 |
|||
|
Mm/nominal thickness |
|||||||
|
0.4~<0.6 |
0.6~1.0 |
1.0~<1.6 |
≧1.6 |
||||
|
SECD |
Products shall be free from stretcher strains marks within 3 months form manufactured date. |
240 |
270 |
36 |
38 |
39 |
40 |
Note 1: If the yield strength is not pronounced, the yield strength values apply to the 0.2%-proof strength(Rp0.2)
Note 2: When 0.4mm
If any special requirement on thickness tolerance, flatness and mechanical properties, etc, please mention it at the time of ordering.
SECD chromate-free Anti-fingerprinting electrogalvanized steel sheet thickness tolerance-specified value:
|
Thickness tolerance-specified value |
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|
Nominal thickness |
Thickness tolerance |
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|
Normal(PT.A) |
Restricted(PT.B) |
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|
mm/nominal width |
mm/nominal width |
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|
≦1200 |
>1200~1500 |
>1500 |
≦1200 |
>1200~1400 |
|
|
<0.40 |
±0.03 |
±0.04 |
±0.05 |
±0.020 |
±0.025 |
|
>0.40~0.60 |
±0.03 |
±0.04 |
±0.05 |
±0.025 |
±0.030 |
|
>0.60~0.80 |
±0.04 |
±0.05 |
±0.025 |
±0.030 |
±0.035 |
|
>0.80~1.00 |
±0.05 |
±0.06 |
±0.07 |
±0.035 |
±0.040 |
|
>1.00~1.20 |
±0.06 |
±0.07 |
±0.08 |
±0.040 |
±0.050 |
|
>1.20~1.60 |
±0.08 |
±0.09 |
±0.10 |
±0.050 |
±0.060 |
|
>1.60~2.00 |
±0.10 |
±0.11 |
±0.12 |
±0.060 |
±0.070 |
SECD chromate-free Anti-fingerprinting electrogalvanized steel sheet flatness-specified value:
|
Flatness-specified value |
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|
Nominal width |
Flatness not greater than |
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|
Normal(PT.A) |
Restricted(PT.B) |
|||||
|
mm/nominal width |
mm/nominal width |
|||||
|
<0.70 |
0.70~<1.20 |
≥1.20 |
<0.70 |
0.70~<1.20 |
≥1.20 |
|
|
≦1200 |
10 |
8 |
7 |
5 |
4 |
3 |
|
>1200~1400 |
12 |
10 |
8 |
6 |
5 |
4 |
When ordering is resticted flatness, it is necessary, but only in case of dispute, to verify the wave height:
If the length of an edge wave is not less than 200mm, its maximum height does not exceed 1% of its length.
If the length of an edge wave is less than 200mm, its maximum height does not exceed 2mm.
SECDchromate-free Anti-fingerprinting electrogalvanized steel sheet specified value for coating mass:
|
Specified value for coating mass |
||
|
Coating mass as recommended |
Min. Value at one point (per side) |
Min. Value at three points(per side) |
|
10/10 |
8.5 |
10 |
|
20/20 |
17 |
20 |
|
30/30 |
25.5 |
30 |
|
40/40 |
34 |
40 |
Contact us:
Email: info@sg295steel.com
Website: www.sphc-steel.com