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| Hot-Dip Zinc Coated Steel |
The product is characterized by excellent corrosion resistance with self-sacrificed corrosion control of zinc, paintability, and workability as products which are galvanized cold-rolled steel at hot-dip galvanizing pot.
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Manufacturing
Electrical appliance part, vending machine, air conditioner part, motor case, oven, exhausted system, refrigerator back plate, home appliance, air conditioner part |
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Construction
Air-duct, ceiling, wall partition, roofing, shutter, electric switchboard |
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| Specification |
| JIS G 3302 – Hot-Dip Zinc Coated Steel |
Grade and symbol (for hot-rolled based metal used)
| Classified symbol |
Application |
| SGHC |
Commercial quality |
| SGH340 |
Structural quality |
| SGH400 |
| SGH440 |
| SGH490 |
| SGH540 |
Grade and symbol (for cold-rolled base metal used)
| Classified symbol |
Application |
| SGCC |
Commercial quality |
| SGCH |
Commercial quality, hard class |
| SGCD1 |
Drawing quality, class 1 |
| SGCD2 |
Drawing quality, class 2 |
| SGCD3 |
Drawing quality, class 3 |
| SGC340 |
Structural quality |
| SGC400 |
| SGC440 |
| SGC490 |
| SGC570 |
Minimum coating mass for equally coated sheet and coil (total mass on both surfaces, unit: g/m²)
| Type of coating |
Coasting mass symbol |
Average coating mass in
trip-spot test |
Minimum coat mass at a single spot |
| Non-alloyed |
Z06 |
60 |
51 |
| Z08 |
80 |
68 |
| Z10 |
100 |
85 |
| Z12 |
120 |
102 |
| Z18 |
180 |
153 |
| Z20 |
200 |
170 |
| Z22 |
220 |
187 |
| Z25 |
250 |
213 |
| Z27 |
270 |
234 |
| Z35 |
350 |
298 |
| Z40 |
450 |
383 |
| Z60 |
600 |
510 |
| Alloyed |
F04 |
40 |
34 |
| F06 |
60 |
51 |
| F08 |
80 |
68 |
| F10 |
100 |
85 |
| F12 |
120 |
102 |
| F18 |
180 |
153 |
Tensile strength and yield point (for hot-rolled base metal used)
| Classified symbol |
Tensile strength
N/mm² |
Yield point
N/mm² |
| SGHC |
--- |
--- |
| SGH340 |
340 min. |
245 min. |
| SGH400 |
400 min. |
295 min. |
| SGH440 |
440 min. |
335 min. |
| SGH490 |
490 min. |
365 min. |
| SGH540 |
540 min. |
400 min. |
Tensile strength and yield point (for cold-rolled base metal used)
| Classified symbol |
Tensile strength
N/mm² |
Yield point
N/mm² |
| SGCC |
--- |
--- |
| SGCH |
--- |
--- |
| SGCD1 |
270 min. |
--- |
| SGCD2 |
270 min. |
--- |
| SGCD3 |
270 min. |
--- |
| SGC340 |
340 min. |
245 min. |
| SGCD3 |
400 min. |
295 min. |
| SGCD3 |
440 min. |
335 min. |
| SGCD3 |
490 min. |
365 min. |
| SGCD3 |
570 min. |
560 min. |
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