Standard specification for pvc plastic pipe, schedules. Astm a48 a48m standard specification for gray iron castings, grades including class no. Gray iron consists of graphite flakes in a metallic. Standard designations usually consist of a letter prefix and a sequentially assigned number. There are four specific grades as astm a48 class 25a, 25b, 25c and 25s mechanical properties of a48 class 25 cast iron. Vertical turbine pumps bulletin cp275 vtp series christensen pumps. Astm a48 76 astm a15977 astm a48 76 astm a15977 astm a48 76 astm a15977 astm a48 76 astm a15977 astm a48 76 astm a15977 typical range of mechanical properties tensileksi min. Astm international, formerly known as the american society for testing and materials astm, is a globally recognized leader in the development and delivery of international voluntary consensus standards. Ihs markit is your source for astm standards and publications.
Astm international helping our world work better standards catalog 2016. Astm a48 astm a48 is the most popular gray iron casting specification and classifies castings to various grades by their tensile strength. Corrosion atmosferica acelerada en una fundicion gris astm a48. Give us a minute while we verify your ip address and youll be on your way to your tailored subscription. Astm a48 class 30 related standards din gg20, bs 1452 grade 220 is a gray cast iron. Gray iron consists of graphite flakes in a metallic matrix. Astm a48 standard for gray iron castings dandong foundry. Pdf since 1989, astm committee e 30 on forensic sciences has been formulating voluntary concensus standards for the forensic sciences.
Astm a48 94ae1, standard specification for gray iron castings, astm international, west conshohocken. Active standard astm a48 a48m developed by subcommittee. The values given in parentheses are for information only. Casting material gray iron in astm a48 sand casting, investment. This may optionally be followed by a dash and the last two digits of the year in which the standard was adopted. When fractured, it is grayish in colour hence the name specifically, a fracture will. The values stated in each system may not be exact equivalents. Standard guide for conducting corrosion coupon tests in field applications 1 this standard is issued under the fixed designation g 4. Astm a48, cl 30b 2 headshaft water lube stainless astm a582, type 416. Connection size body screen retainer gasket bolting standard screen 2 astm a48 class 30 cast iron astm a48 class 30. There are four specific grades as astm a48 class 25a, 25b, 25c and 25s.
I am not sure if the suggestions here were based on hypothetical or real sea. In order to standardize solidification and cooling rate, standard test specimen sizes are used to ensure conformance to the specification. Comparison table for some gray iron casting grades. Astm in the first of an occasional series, we look at standards currently under development around the world in the field of sealing technology. Documents sold on the ansi webstore are in electronic adobe acrobat pdf format, however some iso and iec standards are available from amazon in hard copy format. When fractured, it is grayish in colour hence the name specifically, a fracture will follow along the graphite flakes which are gray. For assistance, please contact astm compass support, and include the full url of this page in your correspondence. They have some grades which have some equal or similar mechanical properties, such as tensile strength and hardness. Gray iron castings are also referred to as gray cast iron, grey iron castings, it is named after the gray color of the fracture surface. Its strength, toughness and ductility duplicate many grades of steel and far exceed those of standard gray irons. The followings are its application, physical properties, chemical composition and our opinion. Astm a48 a48m00, standard specification for gray iron castings, astm international, west conshohocken.
Astm a 247 evaluating the microstructure of graphite in iron castings. Astm a480a480m15 general requirements for flatrolled stainless and heatresisting steel plate, sheet, and strip. Astm a48 class 25 is a material grade of gray cast iron in usa, which is higher than class 20, but lower than class 30. This standard is issued under the fixed designation a 48 a 48m. Astm a48 gray iron casting metalworking heat treating scribd. For annual book of astm standards volume information, refer to the standard s document summary page on the astm website. Additionally, in the table below standards for evaluating the microstructure of graphite.
E8 test methods for tension testing of metallic materials. 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. This is a comparison table for some gray iron casting grades in these standards. Astm a48 a48m032012 we have no amendments or corrections for this standard. Astm a 48 free pdf download astm international standards. In this issue, we focus on the work of the astm american society for testing and materials, one of the largest voluntary standards development organisations in the world. Astm a48 a48m 032012 standard specification for gray. Astma48 standard specification for gray iron castings. Astm a48a48m032016 standard specification for gray. Gray iron astm a48 class 30 data sheet penticton foundry.
Astm a48 a48m 032016 standard specification for gray. The following bibliographic material is provided to assist you with your purchasing decision. Astm does not give any warranty express or implied or make any representation that the contents. Astm class 30 standard gray iron test bars, as cast sae j431 automotive. Astm a278 standard for gray iron casting for pressure parts. This standard has been approved for use by agencies of the. This standard is for gray iron castings used for general engineering use where tensile strength is a major consideration. What is astm a278 pdf standard for gray iron casting for.
Astm a48a48m 032016 standard specification for gray. Combining values from the two systems may result in nonconformance with the standard. All bsi british standards available online in electronic and print formats. It is named after the gray color of the fracture it forms, which is due to the presence of graphite. Astm d780312 standard practice for preparation of zinc hot dip galvanized coated iron and steel product and hardware surfaces for powder coating. Casting degrees are classified on the basis of the tensile strength of the cast test bars. Purchase your copy of astm a48 a48m 032016 as a pdf download or hard copy directly from the official bsi shop. Astm g4 standard guide for conducting corrosion coupon.
This specification covers gray iron castings intended for general engineering use where tensile strength is. Printer friendly version pdf download download as pdf excel download download to excel. A number in parentheses indicates the year of last reapproval. A48 a48m032016 standard specification for gray iron castings gray iron castings. Ductile iron what ductile iron is ductile iron is a family of cast graphitic irons which possess high strength, ductility and resistance to shock. This group of astm specifications covers standard properties of steel and iron castings and forgings for valves, flanges, fittings, and other pressure containing parts for hightemperature and lowtemperature service. Ytype pipeline strainers ytype strainers in a wide variety of sizes and materials to fit most pipeline straining requirements.
Today, some 12,000 astm standards are used around the world to improve product quality, enhance safety. Dallas water utilities approved materials by trade name wastewater collection system manhole lidcover manufacturer3 model number nctcog standard drawing exception notes standard 24 bass and hays bh40024c10 806. Cast iron astm a48 class 35 is equal to ht250, fc250, gg25, g25, fgl250, t260, o125, which is a type of high grade gray cast iron. Material comparison table astm standard a36 structural steel uns no. Astm a48a48m032016 standard specification for gray iron castings. Astm a48 a48m 032016 standard specification for gray iron. It is informational only and not an official part of the standard. Accelerated atmospheric corrosion in a cast astm a48 gray iron. Astm a48, sae j431, gm 274m and astm a126 are standards for gray cast iron.
Annealed cast ductile iron can be bent, twisted or deformed without fracturing. A 644 terminology relating to iron castings e 8 test methods for tension testing of metallic. Astm a48 a48m032012 standard specification for gray iron castings. Gray iron, or grey cast iron, is a type of cast iron that has a graphitic microstructure. Astm a48 a48m 00 standard specification for gray iron. Astm a48 casting metalworking building materials scribd. Cast iron astm a48 class 40c ductile iron astm a536 grade 654512 316 stainless steel, astm a743, type cf8m.
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