How to determine whether it is pure nicke?
1, nickel belt usually has pure nickel belt and nickel-plated steel belt, pure nickel belt is relatively soft, and nickel-plated steel belt is relatively hard, in addition, because nickel density is larger than steel, in the same size and weight, they The volume is different,
2, using a grinding machine to polish, sparks, not pure nickel belt, pure nickel belt will not have sparks, this is the most simple and effective way,
3, the nickel element is a magnetic metal, with weak magnetic properties, can be attracted by the magnet, please correct the misunderstanding of the previous!
4, pure nickel belt will never rust, corrosion, can be soaked with salt water, testing