Silver Top and Silver Top-ECO are manufactured under strict quality controls based on standards comparable to JIS G 3313.
Types of substrates and temper categories
Equivalent JIS standard |
Toyo Kohan Standard |
Mechanical properties (reference) |
Remarks |
Tensile strength |
Extension |
Hardness |
Type |
Temper category |
Temper symbol |
Temper symbol |
(N/mm2) |
(%) |
HR-30T |
SPCC |
Standard |
S |
SN,SO,SE |
270 or higher |
25 or higher |
58 or lower |
|
1/8 hardness |
8 |
SUS |
290 to 410 |
25 or higher |
48 to 62 |
|
1/4 hardness |
4 |
SU4,SU5 |
370 to 490 |
10 or higher |
58 to 68 |
|
1/2 hardness |
2 |
2 |
440 to 590 |
- |
67 to 74 |
|
Hard |
1 |
1 |
550 or higher |
- |
71 or higher |
|
SPCD |
Standard |
S |
SD,SD-CA |
270 or higher |
28 or higher |
58 or lower |
|
|
HS53F |
420 to 550 |
20 to 35 |
61 to 71 |
High-strength steel sheet |
HS55F |
520 to 650 |
15 to 35 |
65 to 75 |
HS85S |
780 to 950 |
5 to 23 |
75 to 83 |
HS10S |
850 to 1100 |
3 to 20 |
78 to 85 |
HS12S |
1100 to 1300 |
3 to 20 |
82 to 90 |
Galvanized Coverage (Per Side)
Nominal Coverage (g/m2) |
Minimum Coverage (g/m2) |
Comparable Plated Thickness (μm) |
3 |
2.5 |
0.4 |
5 |
4.25 |
0.7 |
10 |
8.5 |
1.4 |
15 |
12.75 |
2.1 |
20 |
17 |
2.8 |
Reference: Comparable JIS Codes
Type Codes and Applicable Display Thicknesses (Using Cold Rolled Substrates)
Code Types |
Applicable Display Thickness (mm) |
Cold Rolled Substrate Type Codes Used |
Uses |
SECC |
More than 0.4, Less than 3.2 |
SPCC |
General Purpose |
SECD |
SPCD |
For Ties |
* Compatible display thickness from 25 μm to 1.6 mm.
Chemical Process Types and Codes
Chemical Process Types |
Code |
Chromate Process |
C |
Phosphate Process |
P |
Chromate Free Process |
NC |
Chromate Free Phosphate Process |
NP |
Non Processed |
M |
* Compatible chemical processes are NC, NP and M.
Lubrication Types and Codes
Lubrication Types |
Code |
Lubrication |
O |
Non Lubrication |
X |
Galvanized Coverage Label Codes
alvanized Coverage Label Codes |
Minimum galvanized coverage (g/m2) |
Standard galvanized coverage (g/m2) |
ES |
- |
- |
EB/EB |
2.5 |
3 |
E8/E8 |
8.5 |
10 |
E16/E16 |
17 |
20 |
E24/E24 |
25.5 |
30 |
E32/E32 |
34 |
40 |
E40/E40 |
42.5 |
50 |
* The table above is for uniform thickness plating. * Compatible standard galvanized coverage is 5 to 30?g/m2 for each 5?g/m2.
List of Compatible JIS Code Comparable Products
Comparable JIS Codes |
Comparable Product Specification Codes |
SECC-NC |
HE-71, HE-72, HE-73, ZE-36, ZE-38, ZEB26, BEP22, BEX28 |
SECC-NP |
TE-90, TE-91 |
SECC-M |
Non Processed Silver Top |
SECD-NC |
HE-71, HE-72, HE-73, ZE-36, ZE-38, ZEB26, BEP22, BEX28 |
SECD-NP |
TE-90, TE-91 |
SECD-M |
Non Processed Silver Top |
* No JIS Code comparable products containing the following hexavalent chrome are manufactured because the Silver Top series is completely chrome free. (SECC-C, SECC-P, SECD-C, SECD-P)