What are ASTM Grades

What are ASTM Grades?

ASTM requirements define the specified production technique of the textile and establish the precise chemical composition of pipes, fittings and flanges, via percentages of the authorised portions of carbon, magnesium, nickel, and so forth., and are indicated by using “Grade”.

For example, a carbon metal pipe will probably be identified with Grade A or B, a chrome steel pipe with Grade TP304 or Grade TP321, a carbon metal installing with Grade WPB and so forth..

Below one can to find as an instance 3 tables with chemical specifications for:

Flanges ASTM A182 Grade F304, F304L F316L

Pipes ASTM A312 Grade TP304, TP304L, TP3016L

Fittings ASTM A403 Grade WP304, WP304L, WP316L

Furthermore, a table with most likely used ASTM Grades, organized on Pipes, Fittings, Flanges, Valves, Bolts and Nuts, which belong mutually as a set.

As you'll be have spoke of, within the desk beneath, ASTM A105 has no Grade. Sometimes ASTM A105N is described;

N stands now not for Grade, but for normalized. Normalizing is a variety of warmth medical care, acceptable to ferrous metals basically. The aim of normalizing is to eradicate the inner stresses prompted by way of warmth treating, casting, forming and many others..

CHEMICAL REQUIREMENTS COMPOSITION, %

Flanges ASTM A182

Grade C Mn P S Si Ni Cr Mo

F304 0.08 2 0.0.5 zero.03 1 eight – eleven 18 – 20

F304L 0.03 2 0.half 0.03 1 8 – thirteen 18 – 20

F316L 0.03 2 zero.1/2 0.03 1 10 – 15 sixteen – 18 2 – three

Note:

Grades F304, F304L, and F316L shall have a maximum Nitrogen content of zero.10%.

Pipes ASTM A312

Grade C Mn P S Si Cr Ni Mo

TP 304 zero.08 2 0.half 0.03 1 18 – 20 eight – 11

TP 304L 0.0.5 2 zero.0.5 zero.03 1 18 – 20 eight – 13

TP 316L zero.1/2 2 zero.1/2 zero.03 1 16 – 18 10 – 14 2 – 3

Note:

For small diameter or skinny partitions or both, where many drawing passes are required, a Carbon most of zero.040% is helpful in grades TP304L and TP316L. Small external diameter tubes are described as these less than 0.50 in. [12.7 mm] in external diameter and faded wall tubes as the ones much less than zero.049 in. [1.20 mm] in reasonable 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 zero.08 2 0.0.5 0.03 1 8 – 11 18 – 20

WP 304L zero.03 (2) 2 0.half zero.03 1 8 – 12 18 – 20

WP 316L 0.03 (2) 2 0.half zero.03 1 10 – 14 (three) 16 – 18 2 – three

Notes:

(1) Maximum, until differently indicated.

(2) For small diameter or skinny walls or equally, the place many drawing passes are required, a Carbon highest of zero.040% is crucial in grades TP304L and TP316L. Small outdoors diameter tubes are described as the ones less than zero.50 in. [12.7 mm] in open air diameter and faded wall tubes as the ones much less than zero.049 in. [1.20 mm] in common wall thickness (zero.044 in. [1.10 mm] in minimal wall thickness).

(three) On pierced tubing, the Nickel should be would becould very well be 11.zero-sixteen.zero%.

FREQUENTLY 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 three 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 eight

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 specification covers carbon metallic pipe for prime-temperature provider.

A335 = This specification covers seamless ferritic alloy-steel pipe for prime-temperature carrier.

A333 = This specification covers wall seamless and welded carbon and alloy metal pipe intended for use at low temperatures.

A312 = Standard specification for seamless, immediately-seam welded, and bloodless worked welded austenitic stainless steel pipe meant for excessive-temperature and widely wide-spread corrosive service.

FITTINGS

A234 = This specification covers wrought carbon metallic and alloy metallic fittings of seamless and welded structure.

A420 = Standard specification for piping fittings of wrought carbon metal and alloy metallic for low-temperature service.

A403 = Standard specification for wrought austenitic stainless-steel piping fittings.

FLANGES

A105 = This specification covers principles for cast carbon steel piping system, it's, flanges, fittings, Valves, and related areas, for use in pressure procedures at ambient and better-temperature carrier prerequisites.

A182 = This specification covers solid or Click here for more info rolled alloy and stainless steel pipe flanges, solid fittings, and Valves and areas for high-temperature service.

A350 = This specification covers countless grades of carbon and occasional alloy steel solid or ring-rolled flanges, solid fittings and Valves for low-temperature provider.

VALVES

A216 = This specification covers carbon metallic castings for Valves, flanges, fittings, or different tension-containing components for excessive-temperature carrier and of satisfactory relevant for assembly with different castings or wrought-metal components with the aid of fusion welding.

A217 = This specification covers metallic castings, martensitic stainless steel and alloys metal castings for Valves, flanges, fittings, and other force-containing areas intended generally for high-temperature and corrosive carrier.

A352 = This specification covers metallic castings for Valves, flanges, fittings, and other pressure-containing areas intended on the whole for low-temperature provider.

A182 = This specification covers solid or rolled alloy and chrome steel pipe flanges, solid fittings, and Valves and elements for high-temperature carrier.

BOLTS AND NUTS

A193 = This specification covers alloy and chrome steel bolting textile for force vessels, Valves, flanges, and fittings for excessive temperature or high rigidity carrier, or different unique intent functions.

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

A194 = Standard specification for nuts in lots of varied cloth forms.