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It is well known that mold springs are widely used in stamping dies, metal die-casting molds, plastic molds, as well as other precision mechanical devices with elastic motion, the automotive industry, and other fields. Chromium alloy steel is generally used as the material for mold springs, but which types of mold springs fall under this category? Today, Jingbo Cloud Commerce will tell you. Mold springs include: Japanese-standard mold springs, German-standard mold springs, and polyurethane springs; generally, mold springs refer to rectangular mold springs. Rectangular mold springs feature a small size, good elasticity, high stiffness, high precision. The material used for their fabrication is rectangular in shape, and their surfaces are colored-coated to distinguish different load capacities, giving them an attractive appearance. Mold springs, in simple terms, are springs used in molds. Generally, mold springs are divided into three categories: metal helical springs, nitrogen springs, and polyurethane springs. Currently, cylindrical helical compression springs made of wire with circular or special cross-sections (square, rectangular, flat, SDS-shaped, etc.), rubber springs (neoprene and polyurethane rubber), nitrogen-filled springs, and disc springs are all used in various types of molds. However, in terms of application scope and quantity: circular-section wire helical springs are on the decline, while helical springs made from wires with special cross-sections, especially flat and SDS-shaped wires, are increasing. Rubber springs, particularly polyurethane rubber springs, are showing a steady increase. Disc springs and nitrogen-filled springs are still in the stage of limited-scale trial use; it seems there is a certain market for them. Yet, when evaluating their future prospects based on static and dynamic properties, ease of use and maintenance, as well as cost-effectiveness, further practical testing is needed before a conclusion can be drawn.