Proof load test is the recommended method for determining a castings load performance. Gray iron castings, astm specification a 48, class 40c. Gray iron consists of graphite flakes in a metallic. Size 6 x 6 class 150 ansi flanges volute casing astm a536 grade 65 45 12 ductile iron max operating pressure 250 psi 17. Durabar is an engineered iron that offers machining advantages over carbon and alloy steel as well as other continuous cast iron bars. Astm a48 a48m standard specification for gray iron castings, grades including class no.
The manufacturer shall have produced awwa butterfly valves for a minimum of five years. United states based sources ensure safe keeping of your intellectual property, familiar time zones and quick transit of orders a. Fractional, wire gauge, letter and metric size ranges are available. Therefore it makes a good load bearing street hardware.
This specification covers gray iron castings intended for general engineering use where tensile strength is a major consideration. Astm a48 a48m 032016 standard specification for gray. For example, a casting certified to astm a48 class 40 is cast with iron that has 40,000 psi tensile strength in a separately cast test bar. There are many different specifications governing the use and production of grey iron. Although a48 class 35 grey iron is a common material, and its application is very.
Durabar astm class 40 is engineered iron that offers. Wear rings astm a48 class 40 gray iron bracplate astm a356 grade 65 45 12 ductile iron seal gland astm a356 grade 65 45 12 ductile iron suction cover astm a536 grade 65 45 12 ductile iron mechanical seal single type seal w tungsten carbide vs. Steam trapping and steam tracing equipment 78 north america latin america india europe middle east africa china pacific rim. Gray iron bars made to this specification will have optimal. Durabar resource guide gray iron durabar metal services. Cast iron astm a48 class 40c ductile iron astm a536 grade 654512 316 stainless steel, astm a743, type cf8m.
Sailboats of the class 40 class were designed, in particular, by jean marie finot and pascal conq 4 specifications of sailboat from the class 40 class are available on. Astms ferroalloy and casting standards are instrumental in classifying, evaluating, and specifying the material, chemical, mechanical, and metallurgical properties of iron alloys and their castings. It is built around the astm a48 class 40 gray iron which is validated from a separately cast bar. Standard specification for pvc plastic pipe, schedules. D1785 12 an american national standard standard speci. Weldingcastiron is the subject of this page what is in here for me. Awwa c504, class 150b and conform to nsf standard 61. Ductile iron 604018 is one grade in a family of many.
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. Astm a48 standard for gray iron castings dandong foundry. Annealed cast ductile iron can be bent, twisted or deformed without fracturing. The guide rails shall be 2 standard schedule 40 galvanized or stainless steel pipe which shall be provided by the installation contractor. The number indicates the minimum tensile strength of the separately cast test bar, and the letter indicates the size of the test bar. Valve bodies valve bodies shall be constructed of astm a126, class b cast iron for flanged valves or astm a48, class 40 for wafer style. Each class represents the tensile strength in ksi of a separately cast test bar poured from the iron that makes the casting. Pump exterior coating factory applied primer and finish coat to suit pumped media. Cast irons specifications for gray iron and ductile irons. Wear ring astm a48 class 40 gray iron 316 ss suction cover ductile iron astm a536 654512 cd4mcu bracplate ductile iron astm a536 654512 cd4mcu.
Durabar g2 is built around astm a48 class 40 gray iron. G2 is built around astm a48 class 40 gray iron, which is validated from a. Weldingcastiron, different types and their weldability. Fonderie saguenay specialise in producing engineering components cast from gray iron and ductile iron. Gray iron consists of graphite flakes in a metallic matrix. These ferroalloy and casting standards are helpful in guiding metallurgical laboratories and refineries, product manufacturers, and other endusers of cast iron and its alloys in their proper processing and application procedures to ensure their quality towards safe. Range nas 907 hss and hsco standard drills are available in stub, jobber and aircraft extension lengths and are made from the highest quality hss bright or steam oxide and hsco bronze oxide substrates. Gray iron astm a48 class 30 data sheet penticton foundry. Drills manufactured to national aerospace standards nas. Ksjis symbol ksjis number remark din type din material remark number number.
Castings are classified on the basis of the tensile strength of the iron in separately cast test bars. Chemistry and hardness listed in this spec would be typical for a grade 604018. Tensile strength psi other requirements astm a126 valves, flanges and pipe fittings a 2 b 3. Typical specifications and mechanical properties ferrous. Astm a48 class 40 astm a48 class 30 minimum tensile 40,000 psi 275.
These materials are described and typical properties such as tensile strength, hardness, elongation and proportional limit are provided for the various grades and specifications. Durabar g2 gray iron will contain this type of graphite distribution and will be best suited for applications requiring moderate strength, good vibration damping and thermal conductivity, along with optimal machining characteristics. Iron conforming to astm a48, class 35b, as noted in section 7. Impellers on units up to 30 hp 8 bore shall be of the multivane semi open design, and shall be ductile cast iron astm a536 1007003.
Bbb5 sizez housing material is tempered diecast aluminum jis. Classic tables a46a47a48 standard features 1 grade a or b laminate faced mdf core. Astm a4876 astm a15977 astm a4876 astm a15977 astm a4876 astm a15977 typical range of mechanical properties tensileksi min. The casing shall be cast from astm a48 class 30 gray cast iron of sufficient thickness to withstand 1. Valve boxes 2 piece, slip type general foundries inc. Gray iron, class 30b conforms to astm a48 a48m03 specifications please specify if required in class 35b or ductile iron markings. Cast iron material comparison chart buford, ga cab.
The microstructure will contain type vii, type a, size 46, graphite as defined in astm a247. 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. Cab incorporated offers a cast iron material comparison chart. Durabar is a highly machinable material that allows manufacturers to increase profit margins by machining more parts per hour, thereby decreasing cycle. When fractured, it is grayish in colour hence the name specifically, a fracture will follow along the graphite flakes which are gray. In china, it could be taken as the grade between ht250 and ht300, or between gg25 and gg30. Class 40 gray iron supplier material properties chemical. Ductile iron what ductile iron is ductile iron is a family of cast graphitic irons which possess high strength, ductility and resistance to shock. Class 35b exhibits the best corrosion and wear resistance properties as well as the desirable quality of high compressive strength. Field adjustablereplaceable wear plate shall be gray cast iron, astm a48 class 30b or high chrome cast iron 40 hp and above. Gray iron castings in class 40, class 45, class 50, class 55 and class 60 are usually more difficult to machine, have lower damping capacity and a higher modulus of elasticity, and are more difficult to manufacture. Astm a536 604018 is a nodular iron with a mostly ferritic microstructure and mechanical properties comparable to low alloy steels. Note 1the text of this standard references notes and footnotes which provide explanatory material.
Astm a48 class 30 related standards din gg20, bs 1452 grade 220 is a gray cast iron. Essentially a short overview of problems concerning weldingcastiron however as types and conditions of various cast irons can be very different, so could be the problems and the answers for any questions on these subjects, write us by email. Wwv35 awwa c50799 proof of design 150 psi wsp 300 psi wog. Deep extensive knowledge of foundries enables us to place your casting project with the most suitable source. Astm a536 grade 654512 ductile iron, tangential discharge with cleanout, clockwise rotation viewed from the driven end wear rings. There are four specific grades as astm a48 class 25a, 25b, 25c and 25s mechanical properties of a48 class 25 cast iron. Classic high level table 40 height 40 height 24 dia a4824rd 30 dia a4830rd classic high level table 40 height with footrest 40 height 24 dia 30 dia classic.
Part name common material name material spec number discharge adapter cast iron astm a48 class 30 top bowl cast iron, ceramic lined astm a48 class 30 intermediate bowl cast iron, ceramic lined astm a48 class 30 bearings, top and suction case bronze astm b1443b sae 660 impeller stainless steel astm a743 cf8m pump shaft stainless steel astm. Specifications 629 lybolt road, bullville, ny 10915 845 36471 fax 3611050 material. Class 25,30,35,40 tensile and heat resistant irons. This specification is similar to astm a48 class 40. This testing procedure is detailed in federal specification cid aa 60005 and aashto m 306. Versabar class 40 gray iron machined by our cnc professionals features high strength, excellent machinability and. Printer friendly version pdf download download as pdf excel download.
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