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How to distinguish between copper locks and zinc alloy locks

Hardware locks are an important accessory for doors and windows. Their size, material, color, and style all directly affect the overall appearance of the doors and windows, and are also key factors for the doors and windows to play a role in preventing theft. The lock materials on the market are basically divided into stainless steel, copper, zinc alloy, iron and steel, etc; Stainless steel is a superior lock making material with good strength, strong corrosion resistance, and constant color; Copper is relatively versatile, with superior mechanical properties and relatively expensive prices; High quality zinc alloy is sturdy and practical, with strong corrosion resistance, and is easy to form. It is commonly used to manufacture mid range locks.
The new type of door and window lock adopts copper heaven and earth locks and stainless steel locks. All materials have been thickened, with a smooth surface, comfortable grip, high strength, high density, solid and practical, solid and not loose, anti-theft and anti prying, and high degree of protection.
Identification method of copper lock and zinc alloy lock
In the market, the surface treatment colors of zinc alloys and copper locks are very similar, so sales personnel often mislead customers. For example, the zinc alloy is blue and red antique copper, but they only tell the customer that it is blue or red antique copper, without mentioning the material or color, which leads the customer to buy a zinc alloy lock and assume it is a copper lock. So when buying a lock, everyone also needs to carefully identify it.
1. Net weight comparison
With the same volume, the net weight of a copper lock is heavier than that of a zinc alloy lock, and you can feel it clearly from the touch!
2. Scratch method
Scratches are made on the back of the control panel using a needle (such as a scratch knife or cutting knife). It's an orange copper lock that's hard to scratch, and a zinc alloy lock that's very soft and easy to scratch.
3. Apical mark
The copper lock material is hard, and when leaving the control panel, there are 2-4 accurately positioned support point holes scattered throughout the central line inside the control panel; The zinc alloy material is soft, and when leaving the control panel, there are 4-8 accurately positioned support point holes scattered around the vicinity and center of the control panel.