Stainless Steel include austenitic stainless steel martensitic stainless steel and ferric stainless steel. this material is suitalbe to sand casting and investment casting method.

Austenitic steels have austenite as their primary phase Read more

Grey Cast Iron (Gray iron castings) is so called because of the colour of the fracture face. It contains 1.5-4.3% carbon and 0.3-5% silicon plus manganese, sulphur and phosphorus. It is brittle with low tensile strength, but is easy to cast.

The all data in this documents is referred to Chinese standard of GB/T 9439-1988.

 grey cast iron composition.pdf

Single Casting Specimen Tensile Strength Property

Castings Attached Specimen Tensile Strength Property

Grey Iron Castings’ other  mechanical property

Grey Iron Castings Hardness

Gray Iron Casting heat treatment

Gray Iron Casting, no any standard mentioned the chemistry composition, so we only suggest the following chemistry based on actual production.

Carbon steel have a good content of carbon, so it is easy to casting. especially A216 WCB.

It is important to clarify the meaning of carbon steel in the generic sense and in the more narrow context used in this report. The term steel is usually taken to mean an iron-based alloy containing carbon in amounts less than about 2%. Carbon steels (sometimes also termed plain carbon steels, ordinary steels, or straight carbon steels) can be defined as steels that contain only residual amounts of elements other than carbon, except those (such as silicon and aluminum) added for deoxidation and those (such as manganese and cerium) added to counteract certain deleterious effects of residual sulfur. However, silicon and manganese can be added in amounts greater than those required strictly to meet these criteria so that arbitrary upper limits for these elements have to be set; usually, 0.60% for silicon and 1.65% for manganese are accepted as the limits for carbon steel. Read more

Duplex Stainless steel has two phase microstructure consisting of grains of Ferritic and Austenitic stainless steel. It is mainly used in pump fittings and oil field. We can produce SAF2205 DUPLEX STAINLESS STEEL.

duplex stainless steel compare.pdf

Cast Iron is individed to four types: gray iron, ductile iron, malleable iron, vermicular cast iron, abrasion-resistant cast iron and corrosion resistant cast iron.

Generally, we mainly use sand casting method to make iron castings, such as green sand casting, resin sand casting, Sodium silicate sand casting , lost foam casting and centrifugal casting.

Gray iron: HT150, HT200, HT250, HT300, HT350 ( refer to s Read more

Duplex stainless steel castings, sorted by standard.

Duplex Stainless steel has two phase microstructure consisting of grains of Ferritic and Austenitic stainless steel. It has a better strength and corrosion resistance property than stainless steel 304/316. Duplex stainless steels have lower nickel and molybdenum contents than their austenitic counterparts of similar corrosion resistance.

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The Engineering and physical properties of cast iron wary with the type of iron; the designer must match the engineering requirements with al the properties of the specific type of cast iron being consiered. Machinability, e.g., is significantly affected by the type of cast iron specified. Gray cast iron is the most machinalbe; the white cast irons are the least machinable. Read more

Cast Iron Castings:

the term cast iron covers a wide range of iron carbon silicon alloys containing from 2.0 to 4.0 percent carbon and from 0.5 to 3.0 percent silicon. the alloy typically also contains varying percentages of manganese, sulfur, and phosphorus along with other alloying elements such as chromium, molybdenum, copper and titanium. For a type and grade of cast iron, those elements are specifically and closely controlled. Cast iron is classified in to fire basic types: each type is generally based on graphite morphology as following: Read more

The Ideal of cast iron with ductility, long sought by metallurgists, was realized with the introduction of ductile iron in 1948. Acclaimed to be one of the most significant metallurgical developments in this century, ductile iron has had an increasing impact in many industries. Ductile iron has ductility – as the name implies – and in addition, it has strength and impact resistance far greater than that of gray iron; yet it retains the proven corrosion resistance of gray iron, thus making it an ideal piping material.

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Malleable Cast Iron is the traditional material for manufacturing pipe fittings whose characteristics make it as ideal choice. It is an iron-carbon alloy which combines the outstanding properties of cast iron and steel to produce a material which can still be cast but has improved strength and ductility. It also allows the production of complex shapes combined with a thin wall section.

In its cast state it is very hard and brittle and unsuitable for most engineering applications. A controlled heat treatment process (annealing) is applied to the cast material which changes the structure and Read more