Cast iron bar Grade G-2 contains type A flake graphite in the pearlitic matrix. Gray iron bars made to this specification could have optimal strength, wear and hardness in comparison with other gray iron grades. G-2 is the most common grade of cast iron bar and it is well designed for applications requiring high resistance to wear and reaction to heat treatment. This grade is just like ASTM A48 Class 40.
Cast iron bar DUCTILE IRONS
Ductile Iron was made within the 1940s and have become widely defined as an engineered material by 1960. The buzz of utilizing ductile iron will continue to increase especially with the growing concern over leaded steels becoming an environmental hazard. The nodular graphite supplies the same free machining benefits as lead without creating the machining and waste disposal problems. The ratio of ferrite to pearlite in the matrix is altered for every different grade as a way to produce the required values for tensile and yield strength and elongation.
Cast iron bar Grade 65-45-12 contains nodular graphite inside a ferritic matrix with small amounts of pearlite. The ferritic structure provides excellent machinability with good surface finishes in addition to optimal impact strengths, fatigue properties, electrical conductivity and magnetic permeability. This 65-45-12 cast iron bar has approximately devlqky42 same tensile and yield strengths as AISI 1020 in the as-rolled condition. 65-45-12 will not be intended for hardening. This grade is similar to ASTM A536 grade 65-45-12.
Cast iron bar Grade 80-55-06 contains nodular graphite inside a matrix of ferrite and pearlite. The pearlite/ferrite structure provides higher wear resistance and strength when compared with a ferritic grade of ductile iron. This material is easily machinable with good surface finishes and good hardenability. Tensile and yield strengths is going to be approximately just like AISI 1040 from the as-rolled condition. This grade is just like ASTM A536 grade 80-55-06.
Cast iron bar Grade 100-70-02 contains nodular graphite inside a matrix of pearlite with small quantities of ferrite. The pearlitic structure of the ductile iron maximizes the strength and wear characteristics and offers good reaction to heat treatment. This grade is just like ASTM A536 grade 100-70-02.
Cast iron bar Grade HTN is actually a ductile iron created to be austempered or heat treated to give properties possessing high strength and excellent wear resistance. Within the as-cast condition GGG40 EN-GJS-400-18 parts is going to be comparable to 80-55-06 in terms of machinability and mechanical properties. Additions of nickel and molybdenum are employed to improve as-cast mechanical properties as well as to provide excellent reaction to heat treat. This grade is a lot like ASTM A897-90.
Cast iron bar Grade 201 Type 1 contains flake graphite inside a matrix composed of austenite with approximately 10% alloy carbides. The austenitic matrix provides excellent corrosion resistance and it is non-magnetic. Chrome is added to generate a carbide network that improves potential to deal with wear but is not going to adversely affect machinability. This grade is a lot like ASTM A436.
