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Product grade,properties and surface quality grade
Product grade and properties（Refer to JISG 3302-2010） | |||||||
Product grade | Yield strength (mpa)(≥) | Tensile strength (mpa)(≥) | Elogation after cutting a80（%）（≥） | Surface quality grade | |||
Nominal thickness（mm） | |||||||
≤0.40 | 0.40～0.60 | 0.60～1.00 | 1.00～1.20 | ||||
SGCC | 205 | 270 | - | - | - | - | FA、FB |
SGCD1 | - | 270 | - | 34 | 36 | 38 | FA、FB、FC |
SGCD2 | - | 270 | - | 36 | 38 | 40 | FA、FB、FC |
SGC340 | 245 | 340 | 20 | 20 | 20 | 20 | FA |
SGC400 | 295 | 400 | 18 | 18 | 18 | 18 | FA |
SGC440 | 335 | 440 | 18 | 18 | 18 | 18 | FA |
Surface quality grade instructions | ||
Name | Code | Instructions |
Ordinary surface finishing | FA | Normal request on the skinpass surface |
Higher surface finishing | FB | Higher quality request on the skinpass surface |
Superior surface finishing | FC | Superior quality request on the skinpass surface |
Surface Treatment | ||
Name | Code | Instructions |
Chrome free | C5 | This surface treatment could reduce the white rust on the surface with further limted harmful hexavalent chromium material. |
Chrome free &anti-finger print | A | This surface treatment could reduce the white rust on the surface with Anti-finger print film. |
Oiling | O | This surface treatment could reduce the white rust on the surface with antirust oil. |
Non-treatment | U | This surface is without any surface treatment. |
Comparison table of zinc-coating code (incomplete equivalent) | |||||
Weight of zinc-coating (G/M2) | Zinc-coating code | ||||
China Standard | Bao Steel Standard | EU Standard | Japan Standard | USA Standard | |
no requirements | - | - | - | Z001(G01) | |
≥60 | Z60 | - | Z06 | - | |
≥80 | Z80 | 40/40 | - | Z08 | - |
≥90 | - | - | - | - | Z90(G30) |
≥100 | Z100 | 50/50 | Z100 | Z10 | - |
≥120 | Z120 | - | Z12 | Z120(G40) | |
≥140 | - | 70/70 | Z140 | Z14 | - |
≥150 | Z150 | - | - | - | |
≥180 | Z180 | - | Z18 | Z180(G60) | |
≥200 | Z200 | 100/100 | Z200 | Z20 | - |
≥220 | Z220 | - | Z22 | - | |
≥225 | - | Z225 | - | - | |
≥250 | Z250 | 125/125 | - | Z25 | - |
≥275 | Z275 | 140/140 | Z275 | Z27 | Z275(G90) |
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