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publisherLisa
time2021/08/04
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:
Furthermore, a table with frequently used ASTM Grades, arranged on Pipes, 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. Sometimes ASTM A105N is described;
N stands 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, %
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 |
Note: Grades F304, F304L, and F316L shall have a maximum Nitrogen content 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 |
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). | ||||||||
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 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 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 |
PIPES
FITTINGS
FLANGES
VALVES
BOLTS AND NUTS
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