A193 = This specification covers alloy and stainless steel bolting material for pressure vessels, Valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications.A352 = This specification covers steel castings for Valves, flanges, fittings, and other pressure-containing parts intended primarily for low-temperature service.A217 = This specification covers steel castings, martensitic stainless steel and alloys steel castings for Valves, flanges, fittings, and other pressure-containing parts intended primarily for high-temperature and corrosive service.A216 = This specification covers carbon steel castings for Valves, flanges, fittings, or other pressure-containing parts for high-temperature service and of quality suitable for assembly with other castings or wrought-steel parts by fusion welding.A350 = This specification covers several grades of carbon and low alloy steel forged or ring-rolled flanges, forged fittings and Valves for low-temperature service.A182 = This specification covers forged or rolled alloy and stainless steel pipe flanges, forged fittings, and Valves and parts for high-temperature service.A105 = This specification covers standards for forged carbon steel piping components, that is, flanges, fittings, Valves, and similar parts, for use in pressure systems at ambient and higher-temperature service conditions.A403 = Standard specification for wrought austenitic stainless steel piping fittings.A420 = Standard specification for piping fittings of wrought carbon steel and alloy steel for low-temperature service.A234 = This specification covers wrought carbon steel and alloy steel fittings of seamless and welded construction.A312 = Standard specification for seamless, straight-seam welded, and cold worked welded austenitic stainless steel pipe intended for high-temperature and general corrosive service.A333 = This specification covers wall seamless and welded carbon and alloy steel pipe intended for use at low temperatures.A335 = This specification covers seamless ferritic alloy-steel pipe for high-temperature service.A106 = This specification covers carbon steel pipe for high-temperature service.( 3) On pierced tubing, the Nickel may be 11.0-16.0%. in outside diameter and light wall tubes as those less than 0.049 in.
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Small outside diameter tubes are defined as those less than 0.50 in. ( 2) For small diameter or thin walls or both, where many drawing passes are required, a Carbon maximum of 0.040% is necessary in grades TP304L and TP316L. ( 1) Maximum, unless otherwise indicated. Grades F304, F304L, and F316L shall have a maximum Nitrogen content of 0.10%.įor small diameter or thin walls or both, where many drawing passes are required, a Carbon maximum of 0.040% is necessary in grades TP304L and TP316L. The purpose of normalizing is to remove the internal stresses induced by heat treating, casting, forming etc.Ĭhemical requirements composition, % Flanges ASTM A182 Normalizing is a type of heat treatment, applicable to ferrous metals only.
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N stands not for Grade, but for normalized.
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Fittings ASTM A403 Grade WP304, WP304L, WP316Lįurthermore, a table with frequently used ASTM Grades, arranged on Pipes, Fittings, Flanges, Valves, Bolts and Nuts, which belong together as a group.Īs you may be have noted, in the table below, ASTM A105 has no Grade.Pipes - Fittings - Flanges - Valves - Stud BoltsĪccording to various AsTM standards What are ASTM Grades.ĪSTM standards define the specific manufacturing process of the material and determine the exact chemical composition of pipes, fittings and flanges, through percentages of the permitted quantities of carbon, magnesium, nickel, etc., and are indicated by "Grade".įor example, a carbon steel pipe can be identified with Grade A or B, a stainless-steel pipe with Grade TP304 or Grade TP321, a carbon steel fitting with Grade WPB etc.īelow you will find as an example 3 tables with chemical requirements for.