What are ASTM Grades

What are ASTM Grades?

ASTM requirements define the extraordinary manufacturing strategy of the fabric and ensure the exact chemical composition of pipes, fittings and flanges, thru possibilities of the accredited quantities of carbon, magnesium, nickel, and the like., and are indicated by way of “Grade”.

For illustration, a carbon steel pipe shall be identified with Grade A or B, a stainless steel pipe with Grade TP304 or Grade TP321, a carbon steel becoming with Grade WPB and many others..

Below you can actually in finding as an illustration 3 tables with chemical requisites for:

Flanges ASTM A182 Grade F304, F304L F316L

Pipes ASTM A312 Grade TP304, TP304L, TP3016L

Fittings ASTM A403 Grade WP304, WP304L, WP316L

Furthermore, a desk with typically used ASTM Grades, prepared on Pipes, Fittings, Flanges, Valves, Bolts and Nuts, which belong in combination as a bunch.

As you may be have cited, within the table below, ASTM A105 has no Grade. Sometimes ASTM A105N is defined;

N stands no longer for Grade, but for normalized. Normalizing is a variety of heat remedy, proper to ferrous metals simply. The intent of normalizing is to eradicate the internal stresses precipitated by using warmness treating, casting, forming and the like..

CHEMICAL REQUIREMENTS COMPOSITION, %

Flanges ASTM A182

Grade C Mn P S Si Ni Cr Mo

F304 zero.08 2 0.half zero.03 1 eight – eleven 18 – 20

F304L 0.03 2 zero.1/2 zero.03 1 eight – 13 18 – 20

F316L zero.03 2 0.half zero.03 1 10 – 15 16 – 18 2 – 3

Note:

Grades F304, F304L, and F316L shall have a greatest Nitrogen content of 0.10%.

Pipes ASTM A312

Grade C Mn P S Si Cr Ni Mo

TP 304 zero.08 2 0.1/2 zero.03 1 18 – 20 8 – 11

TP 304L zero.half 2 zero.half 0.03 1 18 – 20 8 – thirteen

TP 316L zero.1/2 2 0.half zero.03 1 16 – 18 10 – 14 2 – three

Note:

For small diameter or thin partitions or either, where many drawing passes are required, a Carbon most of 0.040% is quintessential in grades TP304L and TP316L. Small open air diameter tubes are outlined as the ones less than zero.50 in. [12.7 mm] in backyard diameter and gentle wall tubes as these much less than 0.049 in. [1.20 mm] in commonplace wall thickness (zero.044 in. [1.10 mm] in minimal 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.half 0.03 1 8 – 11 18 – 20

WP 304L 0.03 (2) 2 0.half 0.03 1 eight – 12 18 – 20

WP 316L 0.03 (2) 2 0.1/2 0.03 1 10 – 14 (3) sixteen – 18 2 – 3

Notes:

(1) Maximum, unless otherwise indicated.

(2) For small diameter or skinny walls or both, wherein many drawing passes are required, a Carbon most of zero.040% is necessary in grades TP304L and TP316L. Small exterior diameter tubes are explained as the ones much less than zero.50 in. [12.7 mm] in outside diameter and easy wall tubes as these much less than zero.049 in. [1.20 mm] in ordinary wall thickness (zero.044 in. [1.10 mm] in minimal wall thickness).

(three) On pierced tubing, the Nickel will be eleven.0-sixteen.0%.

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 Get more info 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 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 metal pipe for prime-temperature provider.

A335 = This specification covers seamless ferritic alloy-metallic pipe for high-temperature carrier.

A333 = This specification covers wall seamless and welded carbon and alloy steel pipe intended to be used at low temperatures.

A312 = Standard specification for seamless, instantly-seam welded, and chilly worked welded austenitic chrome steel pipe supposed for top-temperature and standard corrosive service.

FITTINGS

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

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

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

FLANGES

A105 = This specification covers requisites for cast carbon metal piping constituents, which is, flanges, fittings, Valves, and identical elements, to be used in power structures at ambient and top-temperature service stipulations.

A182 = This specification covers forged or rolled alloy and stainless steel pipe flanges, forged fittings, and Valves and components for excessive-temperature carrier.

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

VALVES

A216 = This specification covers carbon steel castings for Valves, flanges, fittings, or other pressure-containing parts for prime-temperature service and of satisfactory fabulous for assembly with different castings or wrought-metallic materials by using fusion welding.

A217 = This specification covers metallic castings, martensitic stainless steel and alloys metallic castings for Valves, flanges, fittings, and other rigidity-containing areas supposed principally for high-temperature and corrosive provider.

A352 = This specification covers metal castings for Valves, flanges, fittings, and different power-containing constituents meant generally for low-temperature provider.

A182 = This specification covers solid or rolled alloy and chrome steel pipe flanges, solid fittings, and Valves and portions for top-temperature service.

BOLTS AND NUTS

A193 = This specification covers alloy and chrome steel bolting textile for pressure vessels, Valves, flanges, and fittings for high temperature or excessive rigidity provider, or different individual intent packages.

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

A194 = Standard specification for nuts in many different material forms.