Is gray iron the same as ductile iron?
Is gray iron the same as ductile iron?
While gray iron does not have a measurable yield strength, the range for tensile strength is 20,000 psi – 60,000 psi. Impact – Ductile iron has a greater resistance to impacts, and is able to resist a minimum of 7 foot pounds of impact (versus 2 pounds of impact for gray iron).
What is GG25?
GG25 is the most commonly used cast iron alloy. It is a lamellar cast iron with a predominantly pearlitic structure. Heat treatment to increase hardness is not recommended. GG25 is similar to GG20, but – due to the slightly finer structure – offers a higher tensile strength.
Which iron is considered between ductile and gray irons?
Continuous casting of ductile and gray iron dominates the industry in terms of low material cost, high machinability and high performance….Gray Iron/Ductile Iron Comparison.
| Gray Iron | Ductile Iron | |
|---|---|---|
| Yield Strength | – | + |
| Machinability | + | + |
| Contact continuous cast iron suppliers for gray & ductile iron raw stock. |
What is grey iron used for?
It is the most common cast iron and the most widely used cast material based on weight. It is used for housings where the stiffness of the component is more important than its tensile strength, such as internal combustion engine cylinder blocks, pump housings, valve bodies, electrical boxes, and decorative castings.
What is en Gjl?
Gray iron, or grey cast iron, is a type of cast iron that has a graphite microstructure. It is named after the gray color of the fracture it forms, which is due to the presence of graphite. It is the most common cast iron and the most widely used cast material based on weight.
What is GG20?
GG-20 is the degree of lowest hardness of qualities. This material offers exceptional machinability and excellent surface finish, but with limited wear resistance and resilience. Noise, vibration damping and thermal conductivity are excellent in this degree.
Is ductile iron harder than cast iron?
Ductile iron can be bent without breaking, whereas cast iron is brittle and breaks when bent. As ductile iron can be bent, it can be made into different shapes and forms. With regard to practical uses, ductile iron pipes are used in sewer and water lines. This is because they are much stronger than cast iron.
What is gg25 made of?
Home Materials GG25 / EN-GJL-250. GG25 is the most commonly used cast iron alloy. This material offers a good combination of strength and abrasion resistance, but is still easy to machine and can be finished to a high standard. It is a lamellar cast iron with a predominantly pearlitic structure.
What is the equivalent ASTM grade of GG 25?
Grade GG 25 is now called. EN-JL 1040 or EN-GJL-250. The equivalent ASTM standard and grade is A 48 Grade 40B. I found this by starting with page 233 of the 18th edition of Stahlschlüssel to find the old DIN 1691 grade and the appropriate ASTM equivalent.
What is the equivalent of Din 1691 grade GG 25?
DIN 1691 has been superceded by DIN EN 1561. Grade GG 25 is now called. EN-JL 1040 or EN-GJL-250. The equivalent ASTM standard and grade is A 48 Grade 40B.
What does en-gjl-250 mean?
EN-GJL-250, CAST IRON GG25 EN-GJL-250, CAST IRON GG25 EN-GJL-250 is a high material grade of grey cast iron in European standard EN 1561, it is also named as cast iron GG25 in standard DIN 1691 by Germany and Austria.