ASTM A691 EFW Carbon And Alloy Steel Pipe_pipe

Description

ASTM A691 / A691M – 19 EFW Carbon and Alloy Steel Pipe for High-Pressure Service at High Temperatures

This specification covers carbon and alloy steel pipe, electric-fusion-welded with filler metal added, fabricated from the pressure-vessel-quality plate of several analyses and strength levels, and suitable for high-pressure service at high temperatures. Heat treatment may or may not be required to attain the desired mechanical properties or to comply with applicable code requirements. Supplementary requirements are provided for use when additional testing or examination is desired.

The specification nominally covers pipe 16 in. [400 mm] in outside diameter and larger with wall thicknesses up to 3 in. [75 mm] inclusive. Pipes having other dimensions may be furnished provided it complies with all other requirements of this specification.


Dimensions: OD: NPS 16″ – 60″ WT: 8 – 75mm Length: 5.8 – 12m

Class designates the type of heat treatment performed in the manufacture of the pipe, whether the weld is radiographically examined, and whether the pipe has been pressure tested as listed below:

Class designations are as follows (Note 1):

Class

Heat Treatment on Pipe

Radiography, see Section

Pressure Test, 

see Section

10

none

none

none

11

none

9

none

12

none

9

8.3

13

none

none

8.3

20

stress relieved, see 5.3.1

none

none

21

stress relieved, see 5.3.1

9

none

22

stress relieved, see 5.3.1

9

8.3

23

stress relieved, see 5.3.1

none

8.3

30

normalized, see 5.3.2

none

none

31

normalized, see 5.3.2

9

none

32

normalized, see 5.3.2

9

8.3

33

normalized, see 5.3.2

none

8.3

40

normalized and tempered, see 5.3.3

none

none

41

normalized and tempered, see 5.3.3

9

none

42

normalized and tempered, see 5.3.3

9

8.3

43

normalized and tempered, see 5.3.3

none

8.3

50

quenched and tempered, see 5.3.4

none

none

51

quenched and tempered, see 5.3.4

9

none

52

quenched and tempered, see 5.3.4

9

8.3

53

quenched and tempered, see 5.3.4

none

8.3

Plate Materials:

Pipe Grade Type of Steel ASTM Specification HB, max A
Number Grade
CM-65 carbon-molybdenum steel A204/A204M A 201
CM-70 carbon-molybdenum steel A204/A204M B 201
CM-75 carbon-molybdenum steel A204/A204M C 201
CMSH-70 carbon-manganese-silicon steel, normalized A537/A537M 1
CMS-75 carbon-manganese-silicon steel A299/A299M 
CMSH-80 carbon-manganese-silicon steel, quenched and tempered A537/A537M 2
½ CR ½% chromium, ½% molybdenum steel A387/A387M 2 201
1CR 1% chromium, ½% molybdenum steel A387/A387M 12 201
1 ¼CR 1 ¼% chromium, ½% molybdenum steel A387/A387M 11 201
2 ¼CR 2 ¼% chromium, 1% molybdenum steel A387/A387M 22 201
3CR 3% chromium, 1% molybdenum steel A387/A387M 21 201
5CR 5% chromium,½% molybdenum steel A387/A387M 5 225
9CR 9% chromium, 1% molybdenum steel A387/A387M 9 241
91 9% chromium, 1% molybdenum, vanadium, columbium A387/A387M 91 241
A Hardness values listed are applicable to S3.

Heat Treatment ParametersA

Pipe Grade

ASTM

Specification

Post-Weld Heat-Treat

Temperature Range (Stress

Relieving), °F (°C)

Normalizing

Temperature,

max unless

otherwise noted,

°F (°C)

Quenching

Temperature,

max unless

otherwise noted,

°F (°C)

Tempering Temperature,

min, °F (°C)

CM-65 A204/A204M 1100 to 1200 [590 to 650] 1700 [925]
CM-70 A204/A204M 1100 to 1200 [590 to 650] 1700 [925]
CM-75 A204/A204M 1100 to 1200 [590 to 650] 1700 [925]
CMSH-70 A537/A537M 1100 to 1200 [590 to 650] 1700 [925]
CMS-75 A299/A299M  1100 to 1200 [590 to 650] 1700 [925]
CMSH-80 A537/A537M 1100 to 1200 [590 to 650] B 1700 [925] 1100 to 1250 [590 to 675]
½ CR A387/A387M 1100 to 1300 [590 to 705] 1850 [1010] 1700 [925] 1150 to 1375 [620 to 745]
1 CR A387/A387M 1100 to 1350 [590 to 730] 1850 [1010] 1700 [925] 1150 to 1375 [620 to 745]
1 ¼CR A387/A387M 1100 to 1375 [590 to 745] 1850 [1010] 1700 [925] 1150 to 1375 [620 to 745]
2 ¼CR A387/A387M 1200 to 1400 [650 to 760] 1850 [1010] 1700 [925] 1250 to 1400 [675 to 760]
3CR A387/A387M 1200 to 1400 [650 to 760] 1850 [1010] 1700 [925] 1250 to 1400 [675 to 760]
5CR A387/A387M 1200 to 1400 [650 to 760] 1850 [1010] 1650 [900] 1300 to 1400 [705 to 760]
9CR A387/A387M 1325 to 1375 [715 to 745] C 1325 to 1375 [715 to 745]
91 A387/A387M 1350 to 1420 [730 to 770]

1900 to 2000 [1040 to 1095]

1900 min [1040

min]

1350 to 1440 [730 to 780]

Where ellipses (…) appear in the table, there is no requirement.

Requires quenching and tempering.

9 CR steel is an air-hardenable steel, at times retaining austenite down to near atmospheric temperature. 

    Good practice is to allow the steel to cool to 150°F or lower before subjecting the steel to a tempering treatment or post-weld heat treatment.

ASTM A691 Alloy Steel Pipe, ASTM A691 Chemical Composition, ASTM A691 class 22 Carbon Steel Pipe, ASTM A691 9CR CL22 Electric Fusion Welding Steel Pipe, ASTM A691 Material Electrofusion, ASTM A691 1 ¼Cr Cl22 Steel Pipes, ASTM A691 Gr.1 ½CR Cl.42 Alloy Steel Pipe, ASTM A691 1 ¼CR High-temperature Steel Pipe, ASTM A691 Gr.1 ¼CR Cl22 High-pressure Pipes, ASTM A691 5CR EFW Pipe

Hot Tags: astm a691 efw carbon and alloy steel pipe, China, manufacturers, suppliers, factory, company, exporter, seller, brands, import, buy, best, high-quality

HSH stocks a broad range of metal materials, including aluminum, steel, stainless steel, copper and brass, and specialty metals. Also, we also sell cast fittings, cast Iron, forged fittings, cutting tools, flanges, ect. If you have any needs about our products, you can contact us.
sales@metal-pipe.com

,

HSH stocks a broad range of metal materials, including aluminum, steel, stainless steel, copper and brass, and specialty metals. Also, we also sell cast fittings, cast Iron, forged fittings, cutting tools, flanges, ect. If you have any needs about our products, you can contact us.
sales@metal-pipe.com

Leave a Comment

Your email address will not be published. Required fields are marked *

Shopping Cart