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Posted by Edgar on December 18th, 2020

Alloy Steel Products

What are ASTM Grades?

ASTM standards specify the particular manufacturing procedure of the material and figure out the exact chemical structure of pipes, fittings and flanges, through portions of the permitted quantities of http://lorenzogtxx255.xtgem.com/where%20will%20stainless%20steel%20904l%20be%201%20year%20from%20now carbon, magnesium, nickel, etc., and are indicated by "Grade".

For instance, 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 and so on.

Below you will find as an example 3 tables with chemical requirements for:

Flanges ASTM A182 Grade F304, F304L F316L

Pipelines ASTM A312 Grade TP304, TP304L, TP3016L

Fittings ASTM A403 Grade WP304, WP304L, WP316L

In addition, a table with often utilized ASTM Grades, organized on Pipeline, Fittings, Flanges, Valves, Bolts and Nuts, which belong together as a group.

As you may be have noted, in the table below, ASTM A105 has no Grade. Often ASTM A105N is explained;

N stands not for Grade, however for stabilized. Stabilizing is a type of heat treatment, relevant to ferrous metals only. The purpose of normalizing is to remove the internal tensions caused by heat treating, casting, forming and so on.

CHEMICAL REQUIREMENTS STRUCTURE, %

Flanges ASTM A182

Grade

C.

Mn.

P.

S.

Si.

Ni.

Cr.

Mo

.

F304.

0.08. 2.

0.045

.

0.03.

1.

8- 11.

18- 20

.

F304L.

0.03.

2.

0.045.

0.03.

1.

8- 13.

18

- 20.

F316L

.

0.03.

2.

0.045.

0.03. 1. 10- 15. 16- 18. 2- 3. Keep in mind:. Grades F304, F304L, and F316L will have an optimum Nitrogen material of 0.10%.

Pipes ASTM A312.

Grade.

C.

Mn.

P.

S.

Si.

Cr.

Ni.

Mo

.

TP 304

.

0.08.

2.

0.045.

0.03.

1.

18- 20.

8 - 11.

TP 304L.

0.035.

2.

0.045.

0.03.

1.

18 - 20.

8 - 13.

TP 316L

. 0.035. 2. 0.045. 0.03. 1. 16 -18. 10- 14. 2 -3. Keep in mind:. For little size or thin walls or both, where lots of drawing passes are required, a Carbon optimum of 0.040 %is necessary in grades TP304L and TP316L. Little outdoors diameter tubes are specified as those less than 0.50 in. [12.7 mm] in outdoors size and light wall tubes as those less than 0.049 in. [1.20 mm] in typical wall thickness( 0.044 in. [

1.10 mm] in minimum

wall thickness ).

Fittings ASTM A403

.

Grade.

C.( 1 ).

Mn.

( 1)

.

P.( 1 ).

S.( 1)

.

Si.( 1)

.

Ni.

Cr.

Mo. WP 304.

0.08.

2. 0.045. 0.03.

1.

8 - 11.

18 -20.

WP 304L.

0.03 (2).

2.

0.045. 0.03. 1. 8- 12. 18 -20. WP 316L.

0.03( 2). 2. 0.045. 0.03. 1. 10 -14( 3). 16- 18. 2- 3. Notes:.( 1) Maximum, unless otherwise suggested.( 2) For small size or thin walls or both, where many drawing passes are needed, a Carbon optimum of 0.040% is necessary in grades TP304L and TP316L. Little outdoors size tubes are defined as those less than 0.50 in. [12.7 mm] in outdoors size and light wall tubes as those less than 0.049 in. [1.20 mm] in typical wall density (0.044 in. [1.10 mm] in minimum wall thickness).

( 3) On pierced tubing, the Nickel might be 11.0-16.0%.

OFTEN USED ASTM GRADES.

Material.

Pipes.

Fttg.

Flg.

Valves.

Bolts and Nuts.

Carbon Steel.

A106 Gr A.

A234 Gr WPA.

A105.

A216 Gr WCB.

A193 Gr B7.

A194 Gr 2H.

A106 Gr B.

A234 Gr WPB.

A105.

A216 Gr WCB.

A106 Gr C.

A234 Gr WPC.

A105.

A216 Gr WCB.

Carbon Steel.

Alloy.

High-Temp.

A335 Gr P1.

A234 Gr WP1.

A182 Gr F1.

A217 Gr WC1.

A193 Gr B7.

A194 Gr 2H.

A335 Gr P11.

A234 Gr WP11.

A182 Gr F11.

A217 Gr WC6.

A335 Gr P12.

A234 Gr WP12.

A182 Gr F12.

A217 Gr WC6.

A335 Gr P22.

A234 Gr WP22.

A182 Gr F22.

A217 Gr WC9.

A335 Gr P5.

A234 Gr WP5.

A182 Gr F5.

A217 Gr C5.

A335 Gr P9.

A234 Gr WP9.

A182 Gr F9.

A217 Gr C12.

Carbon Steel.

Alloy.

Low-Temp.

A333 Gr 6.

A420 Gr WPL6.

A350 Gr LF2.

A352 Gr LCB.

A320 Gr L7.

A194 Gr 7.

A333 Gr 3.

A420 Gr WPL3.

A350 Gr LF3.

A352 Gr LC3.

Austenitic.

Stainless.

Steel.

A312 Gr TP304.

A403 Gr WP304.

A182 Gr F304.

A182 Gr F304.

A193 Gr B8.

A194 Gr 8.

A312 Gr TP316.

A403 Gr WP316.

A182 Gr F316.

A182 Gr F316.

A312 Gr TP321.

A403 Gr WP321.

A182 Gr F321.

A182 Gr F321.

A312 Gr TP347.

A403 Gr WP347.

A182 Gr F347.

A182 Gr F347.

Material.

Pipes.

Fttg.

Flg.

Valves.

Bolts and Nuts.

ASTM Materials.

PIPES.

A106 = This spec covers carbon steel pipeline for high-temperature service.

A335 = This spec covers seamless ferritic alloy-steel pipeline for high-temperature service.

A333 = This requirements covers wall smooth and welded carbon and alloy steel pipe meant for usage at low temperatures.

A312 = Standard requirements for smooth, straight-seam bonded, and cold worked bonded austenitic stainless steel pipe meant for high-temperature and basic corrosive service.

FITTINGS.

A234 = This requirements covers wrought carbon steel and alloy steel fittings of smooth and welded building and construction.

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A420 = Basic specification for piping fittings of wrought carbon steel and alloy steel for low-temperature service.

A403 = Standard spec for wrought austenitic stainless steel piping fittings.

FLANGES.

A105 = This requirements covers standards for created carbon steel piping components, that is, flanges, fittings, Valves, and similar parts, for usage in pressure systems at ambient and higher-temperature service conditions.

A182 = This requirements covers created or rolled alloy and stainless-steel pipeline flanges, forged fittings, and Valves and parts for high-temperature service.

A350 = This specification covers several grades of carbon and low alloy steel created or ring-rolled flanges, forged fittings and Valves for low-temperature service.

VALVES.

A216 = This requirements covers carbon steel castings for Valves, flanges, fittings, or other pressure-containing parts for high-temperature service and of quality appropriate for assembly with other castings or wrought-steel parts by combination welding.

A217 = This spec covers steel castings, martensitic stainless steel and alloys steel castings for Valves, flanges, fittings, and other pressure-containing parts intended mostly for high-temperature and destructive service.

A352 = This spec covers steel castings for Valves, flanges, fittings, and other pressure-containing parts meant mostly for low-temperature service.

A182 = This spec covers created or rolled alloy and stainless steel pipeline flanges, forged fittings, and Valves and parts for high-temperature service.

BOLTS AND NUTS.

A193 = This specification covers alloy and stainless steel bolting material for pressure vessels, Valves, flanges, and fittings for heat or high pressure service, or other unique purpose applications.

A320 = Basic Specification for Alloy-Steel and Stainless Steel Bolting Materials for Low-Temperature Service.

A194 = Standard specification for nuts in several material types.