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ASTM Material Classification for Steel Pipe Fittings

Views: 113     Author: Good Du     Publish Time: 2023-03-03      Origin: Site

The ASTM standard specifies the specific manufacturing process and precise chemical composition requirements for steel pipes, fittings and flanges, including the content percentage of carbon, manganese, nickel and other chemical elements.  Materials are distinguished by steel grades.

ASTM Material Classification

Steel pipe

A106-Standard Specification for Seamless Carbon Steel Pipe for High-Temperature Service

A335-Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service

A333-Standard Specification for Seamless and Welded Steel Pipe for Low-Temperature Service and Other Applications with  Required Notch Toughness

Pipe fittings

A234-Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service

A420-Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low-Temperature Service1

A403-Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings


A105-Standard Specification for Carbon Steel Forgings for Piping Applications

A182-Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service

A350-Standard Specification for Carbon and Low-Alloy Steel Forgings,Requiring Notch Toughness Testing for Piping Components


A216-Standard Specification for Steel Castings, Carbon, Suitable for Fusion Welding, for High-Temperature Service

A217-Standard Specification for Steel Castings, Martensitic Stainless and Alloy, for Pressure-Containing Parts, Suitable for High-Temperature Service

A352-Standard Specification for Steel Castings,Ferritic and Martensitic,for Pressure-Containing Parts, Suitable for Low-Temperature Service

Bolt & Nut

A193-Standard Specification for Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applications

A194-Standard Specification for Carbon and Alloy Steel Nuts for Bolts for High Pressure or High Temperature Service, or Both

A320-Standard Specification for Alloy-Steel and Stainless Steel Bolting Materials for Low-Temperature Service

ASTM standards are usually denoted by standard code + alphabetic sort code + standard serial number + year of formulation + standard English name.  

1. The standard serial number is the metric unit standard if it is followed by the letter M, and the English unit standard if it is not accompanied by the letter M.

2. If there are brackets after the year of formulation, the age in brackets indicates the date of the re-examination of the standard.

3. If there is a, b, C... after the year of formulation, it  represents the revision of the standard.

4. If there is £1, £2, £3... after the year of formulation, it represents the standard only be changed in the article structure but without any change in practical contents.

5. The annotation of alphabetic sort code:

    A- Ferrous metals

    B- Nonferrous metals

    C -- Cement, ceramics, concrete and masonry materials

    D- Other materials (petroleum products, fuels, low strength plastics, etc.)

    E -- Miscellaneous (chemical analysis of metals, fire resistance tests, non-destructive tests, statistical methods, etc.)

    F- - Special purpose materials (electronic materials, shockproof materials, medical and surgical materials, etc.)

    G- Corrosion, deterioration and degradation of materials

Material Comparison Table


We(Shanghai Zhucheng Pipe Fittings Manufacturing Co Ltd) is professional engaged in manufacture of Steel pipe(seamless/welded), pipe fittings(butt welding, socket weld, threaded),and flanges in pipe system of all kinds of materials(carbon steel, stainless steel,alloy steel,low temp steel,pipeline steel). Bushing in Material ASTM A105 of standard ASME B16.11 is one of our conventional product. In order to get to a successful cooperation with customers, normally we are willing to provide free samples to all customers if required.(The customer should be responsible for the freight and the samples should be in common size and material)

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