VẬT LIỆU THEO TIÊU CHUẨN: ASTM - Nme

Trang chủ » Tiêu Chuẩn Astm A403 » VẬT LIỆU THEO TIÊU CHUẨN: ASTM - Nme

Có thể bạn quan tâm

VẬT LIỆU THEO TIÊU CHUẨN: ASTM What are ASTM Grades?

ASTM 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".

For 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..

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

  1. Flanges according to ASTM A182 Grade F304, F304L F316L
  2. Pipes according to ASTM A312 Grade TP304, TP304L, TP3016L
  3. Fittings according to ASTM A403 Grade WP304, WP304L, WP316L

Furthermore, a table with frequently used ASTM Grades, arranged on Pipes, Fittings, Flanges, Valves, Bolts & Nuts, which belong together as a group.

As you may be have noted, in the table below, ASTM A105 has no Grade. Sometimes ASTM A105N is described;Nstands not for Grade, but for normalized. Normalizing is a type of heat treatment, applicable to ferrous metals only. The purpose of normalizing is to remove the internal stresses induced by heat treating, casting, forming etc..

Chemical requirements composition, %

Flangesaccording to ASTM A182
GradeCMnPSSiNiCrMo
F3040.082.00.0450.0301.08.0-11.018.0-20.0
F304L0.0302.00.0450.0301.08.0-13.018.0-20.0
F316L0.0302.00.0450.0301.010.0-15.016.0-18.02.0-3.0
Note:Grades F304, F304L, and F316L shall have a maximum Nitrogen content of 0.10%.
Pipesaccording to ASTM A312
GradeCMnPSSiCrNiMo
TP3040.082.00.0450.0301.018.0-20.08.0-11.0
TP304L0.0352.00.0450.0301.018.0-20.08.0-13.0
TP316L0.0352.00.0450.0301.016.0-18.010.0-14.02.0-3.0
Note: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. Small outside diameter tubes are defined as those less than 0.50 in. [12.7 mm] in outside diameter and light wall tubes as those less than 0.049 in. [1.20 mm] in average wall thickness (0.044 in. [1.10 mm] in minimum wall thickness).
Fittingsaccording to ASTM A403
GradeC(1)Mn(1)P(1)S(1)Si(1)NiCrMo
WP3040.082.00.0450.0301.08.0-11.018.0-20.0
WP304L0.030 (2)2.00.0450.0301.08.0-12.018.0-20.0
WP316L0.030 (2)2.00.0450.0301.010.0-14.0 (3)16.0-18.02.0-3.0
Notes:(1)Maximum, unless otherwise indicated.(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. Small outside diameter tubes are defined as those less than 0.50 in. [12.7 mm] in outside diameter and light wall tubes as those less than 0.049 in. [1.20 mm] in average wall thickness (0.044 in. [1.10 mm] in minimum wall thickness).(3)On pierced tubing, the Nickel may be 11.0-16.0%.
Frequently usedASTM Grades
MaterialPipesFittingsFlangesValvesBolts&Nuts
Carbon SteelA106 Gr AA234 Gr WPAA105A216 Gr WCBA193 Gr B7A194 Gr 2H
A106 Gr BA234 Gr WPBA105A216 Gr WCB
A106 Gr CA234 Gr WPCA105A216 Gr WCB
Carbon SteelAlloyHigh-TempA335 Gr P1A234 Gr WP1A182 Gr F1A217 Gr WC1A193 Gr B7A194 Gr 2H
A335 Gr P11A234 Gr WP11A182 Gr F11A217 Gr WC6
A335 Gr P12A234 Gr WP12A182 Gr F12A217 Gr WC6
A335 Gr P22A234 Gr WP22A182 Gr F22A217 Gr WC9
A335 Gr P5A234 Gr WP5A182 Gr F5A217 Gr C5
A335 Gr P9A234 Gr WP9A182 Gr F9A217 Gr C12
Carbon SteelAlloyLow-TempA333 Gr 6A420 Gr WPL6A350 Gr LF2A352 Gr LCBA320 Gr L7A194 Gr 7
A333 Gr 3A420 Gr WPL3A350 Gr LF3A352 Gr LC3
AusteniticStainlessSteelA312 Gr TP304A403 Gr WP304A182 Gr F304A182 Gr F304A193 Gr B8A194 Gr 8
A312 Gr TP316A403 Gr WP316A182 Gr F316A182 Gr F316
A312 Gr TP321A403 Gr WP321A182 Gr F321A182 Gr F321
A312 Gr TP347A403 Gr WP347A182 Gr F347A182 Gr F347
ASTM Materials
  • VẬT LIỆU THEO TIÊU CHUẨN: ASTM
  • VẬT LIỆU THEO TIÊU CHUẨN: JIS - ASTM

Từ khóa » Tiêu Chuẩn Astm A403