| Location | Category | Value |
|---|---|---|
| Executive standard | National standard | GB/T12754-2019 |
| American Standard/European Standard | ASTM A792M | |
| Cold rolled substrate | Width specification | 1200mm |
| Cold rolled substrate thickness | ≥0.41mm | |
| Including metallized layer, the thickness after painting | ≥0.46mm | |
| Label thickness | ≥0.45mm | |
| Size deviation | Width tolerance | Upper deviation +4mm Lower deviation 0 |
| Thickness | Upper deviation +0.05mm Lower deviation 0 |
|
| Yield Strength | >300MPA | |
| Tensile strength | 270-500MPA | |
| Elongation after break | More than 20% | |
| Steel coil inner diameter | Standard: 508mm, Except for other agreements | |
| Metal coating | Alloy composition | AlZnMg or galvanized AlMg |
| Total Weight of Plating Both Sides (Outside/Inside) | 150g/ (75/75 or 85/65) | |
| Neutral salt spray test | Surface of the board | ≥2500 hours, no red rust on surface |
| Wound surface (end surface) | ≥1200 hours, no red rust on surface |
| Property | Specification |
|---|---|
| PE coating structure standard (μm) | Outside: ≥25 Inside: ≥7 |
| Pencil hardness | Not less than HB |
| Specular Gloss of Topcoat | Glossiness ≥40 degrees |
| T bend value | 2T |
| Impact energy | Not less than 9J |
| Neutral salt spray test | ≥1500h without bubbles |
| UVB-313 | ≥700h |
| Parameter | Range |
|---|---|
| Humidity | 20% to 90% |
| Temperature | Min -45°C, Max 43°C |
| Unit ammonia | <30ppm |
| Unit carbon dioxide | <7000ppm |
| Unit oxygen | 21% |
| Unit hydrogen sulfide | <5ppm |
