Cast Iron GGG40 - Ductile IronCast iron GGG40 is a low grade of ductile iron. Our foundry has produced this material for many years, and herein, we introduce its mechanical and chemical properties and some iron castings made by this material grade. GGG40 is a ductile iron grade of Germany standa

Some customers of Qingdao TianHua YiHe foundry asked us about the difference between cast iron and ductile iron, including their advantages and disadvantages. Here in, we listed their main properties and hope to give you a reference for material selection.

Actually, before comparison, we need to clarify a definition. The cast iron is meaning a category of iron material, whose carbon content is higher than 2.1%. Therefore, it includes many different types according to different graphite shapes and microstructures, such as grey iron, ductile iron, white iron, malleable iron, vermicular iron, austenitic iron etc.

The investment casting is also called lost wax casting. It’s generally
used for custom complicated shape casting parts which cannot be reached
by die casting or sand casting. It can made from almost any metal,
especially stainless steel. The casted parts weight from grams to
kilograms.

The die casting is suitable for applications that require good surface
finish and dimensional consistency. The main die casting alloys are:
zinc, aluminium, copper, magnesium, lead, and tin etc.

Sand casting also called sand mold casting, it's used to produce a wide
variety of metal components with complex geometries. These metal parts
can vary greatly in size and weight, ranging from a couple ounces to
several tons. The small sand cast parts include as gears, pulleys,
crankshafts etc.

For the past 10 years, we have successfully exported many metal
casting parts to worlds. We provide a variety of metal casting
processes, including: sand casting, die casting, low pressure casting,
gravity casting (permanent mold casting), investment casting, and
precision casting.