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ASTM A234 Carbon Steel Pipe Fittings

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Overview:

ASTM A234 is the standard specification for pipe fittings of wrought carbon steel and alloy steel for moderate and high-temperature service. The Cr-Mo low alloy steel pipe fittings has been separately listed on our website. Carbon steel pipe fittings manufactured to ASMT A234 are usually furnished in butt-welding form in accordance with ASME B16.9 or ASME B16.49. There are two carbon steel grades: WPB and WPC, of which ASTM A234 WPB is mostly often used in pipeline industry. The A234 WPB butt-welding pipe fittings include elbows, bends, returns, tees, reducers, end caps, crosses, lap joint stub ends, nipples and couplings.

carbon-steel-buttweld-fittings


Description:

Specifications : ASTM A234 / ASME SA 234

Dimensions : ASME/ANSI B16.9, ASME B16.28, MSS-SP-43, BS4504, BS4504, BS1560, BS10, ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799 MSS-SP-43

Size : Seamless 1/2″ – 10″ , Welded 1/2″ – 48″

Type : Seamless / Welded / Fabricated

Bending Radius : R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom

Thickness : Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS



Chemical Composition

Grade

C

Mn

P

S

Si

Cr

Mo

Ni

Cu

V

Nb

WPB

0.3

0.29-1.06

0.05

0.058

0.1min

0.4

0.15

0.4

0.4

0.08

0.02

WPC

0.35

0.29-1.06

0.05

0.058

0.1min

0.4

0.15

0.4

0.4

0.08

0.02

WP11 CL1

0.05-0.15

0.30-0.60

0.03

0.03

0.50-1.00

1.00-1.50

0.44-0.65

-

-

-

-

WP11 CL2/3

0.05-0.20

0.30-0.80

0.04

0.04

0.50-1.00

1.00-1.50

0.44-0.65

-

-

-

-

Notes:

The sum of Cu, Ni, Cr, and Mo shall not exceed 1.00%.

The sum of Cr and Mo shall not exceed 0.32%.

For each reduction of 0.01% below the specified C maximum, an increase of 0.06% Mn above the specified maximum will be permitted, up to a maximum of 1.35%.

The maximum carbon equivalent (C.E.) shall be 0.50, based on heat analysis and the formula C.E.=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15.


Mechanical Properties

Tensile Requirements

WPB

WPC, WP11CL2

WP11CL1

WP11CL3

Tensile Strength, min, ksi[MPa]

60-85

70-95

60-85

75-100

(0.2% offset or 0.5% extension-under-load)

[415-585]

[485-655]

[415-585]

[520-690]

Yield Strength, min, ksi[MPa]

32

40

30

45

[240]

[275]

[205]

[310]



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