Only few of our clients asked about this question. Compare with the pin appearance, pin backing and pin plating, the metal base of pin only caused a little care.
It is because of the metal base has no sense of presence. Just like us. As a professional pins manufacturer, we turn designs into tons of pins annually , but seems we have no sense of presence on internet due to lack of marketing.
OK, come back to our story. Before choose the material for enamel pin, you should firstly know that what materials are able to be used for enamel pins.
Here is the list, listed by usage frequency : iron, zinc alloy, stainless steel, aluminum, cooper. etc.
Iron: frequently used for soft enamel pin, hard enamel pin, no color pin. Etc
Zinc alloy: also wildly used for enamel pins, coins, badges. Etc
Stainless steel & aluminum: used for offset print pin.
Cooper: based on clients requirements, it can be used in enamel pins, challenge coins. Etc.
And below list is listed by hardness of the metal: iron, cooper, brass,stainless steel, aluminum, zinc alloy,
Iron and zinc alloy are widely used in enamel pin sector. Stainless steel & aluminum are used in offset print pin. Cooper & brass are also used for enamel pin. If without further note, we will take iron & zinc alloy as the default metal for enamel pin.
Someone may wonder that since iron and zinc alloy are both used for enamel pin. So how do you tell when to use iron and when to use zinc alloy.
To answer that question, we will firstly classify enamel pin as 3D pin and 2D pin. For most of the 3D pin, we will use zinc alloy since it’s more soft to be shaped. If it is a 2D pin with a relative complicated design, such as there is cutouts then it will goes to zinc alloy. The simple design left will use iron.