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ASTM A860 Butt Welding Fittings

Views: 5     Author: Site Editor     Publish Time: 2023-11-21      Origin: Site

ASTM A860 is a standard specification for high-strength ferritic steel materials, mainly for butt welding fittings.ASTM A860 butt welding fittings connects pipes together through welding and is suitable for high-temperature and high-pressure working environments.It is mainly used in petroleum and natural gas pipeline systems.

What Is ASTM A860 Specification

ASTM A860 is a standard developed by the American Society for Testing and Materials (ASTM) for butt-welding fittings.The standard covers aspects such as materials, properties, manufacturing, inspection, and marking to ensure the quality and performance of butt-welding fittings meet the design requirements of pipelines.

Types, Dimension,Material And Manufacturing Process

There are many types of ASTM A860 butt welding fittings ,such as 90deg/45deg elbow、bend、equal/reducing tee、cross、reducer、cap,stub end etc.These fittings can meet different pipeline layout and connection requirements。

A860 butt welding fittings dimensional requirements for 14" and smallerbutt-welding fittings are provided in ASME B16.9.Dimensional requirements for butt-welding fittingslarger than 14: through 48" are provided by MSS-SP-75.

These standards specify the dimensions, tolerances, materials, and testing requirements for butt-welding fittings to ensure their quality and applicability to piping systems with various design requirements.

Grades:

ASTM A860 WHPY42,46,52,60,65,70

Outer Diameters:

1/2" to 14" in ASME B16.9;14" to 48" in MSS-SP-75

Wall Thickness Schedule:

SCH 10, SCH 40, SCH 160 comply with ASME B16.9

Pressure Class:

Class 150, 300, 600, 900, 1500, 2500

Manufacturing Standards:

ASME B16.9, ASME B16.28, MSS-SP-75

Coatings:

3LPE, FBE, Zinc Coated, PTFE, HDPE, Fiber-Glass


ASTM A860 butt welding fittings material includs grade WPHY42、WPHY46、WPHY52、WPHY60、WPHY65、WPHY70.Which corresponding to the API 5L Pipe standard X42 to X70.

Chemical Composition:

CHEMICAL

LIMITS

C

Mn

P

S

Si

Cu

Ni

Cr

Mo

V

Ti

Al

Cb

ASTM A860

MIN


1.00



0.15









MAX

0.20

1.45

0.030

0.010

0.40

0.35

0.50

0.30

0.25

0.10

0.05

0.06

0.04

A: The carbon equivalent calculated by the following formula, shall not exceed 0.42%.
CE = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15
B: If vacuum carbon deoxidation is used, silicon shall not exceed 0.10% by heat analysis and 0.12% by product analysis.
C: Ni + Cr + Mo + Cu shall not exceed 1.0%.

Mechancal Properties

MATERIAL

WPHY42

WPHY46

WPHY52

WPHY60

WPHY65

WPHY70

T.S (MPA)

415 min

435 min

455 min

515 min

530 min

550 min

Y.S (MPA)

290 min

315 min

360 min

415 min

450 min

485 min

EL %

25 min

25 min

25 min

20 min

20 min

20 min

Impact Test:

Toughness Cenergy absorption measured at -50“F[-46C]

Size, mm

Average/min, ftlbs[J]

Lateral Expansion min,MLS(mm)

10X10

30/25[40/34]

25[0.64]

10X7.5

25/21[34/28]

21 [0.53]

10X5

20/17[27/23]

13 [0.33]

Hardness:

Fittings under ASTM A860 shall have a maximum hardness of 22 HRC (235 HBW).

Heat Treatment

ASTM A860 butt welding fittings shall be heat treated. Fittings that are formed above transformation temperature or made by welding, shall be cooled down to critical temperature before heat treatment. The methods include normalizing, quenching, tempering or stress relieving under the specification of ASTM A960/960M.

ASTM A860 butt welding elbow

914X12.7mm 90DEG BEND ASTM A860 WPHY 52 supplied to Canada

Advantages

Compressive strength

Corrosion resistance

Wide applications

Highly durable

Long service life

Various types

ASTM A860 butt welding fittings has a wide range of butt welding pipe types and sizes, which can meet the needs of different fields and applications, and is therefore widely used in various pipeline systems.


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