Related grades:SECC,SECE

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

Nominal thickness

Thickness tolerance

Normal(PT.A)

Restricted(PT.B)

mm/nominal width

mm/nominal width

≦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

Nominal width

Flatness not greater than

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