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ASTM A139 / ASME SA139 / Electric Resistance Welded Steel Pipe supplier & distributor in India

PIPE & TUBE ASTM STANDARDS

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ASTM A 139-89b / ASME SA 139-89b 

ELECTRIC RESISTANCE WELDED STEEL PIPE

1.Scope

1.1 This specification covers five grades of electric -fusion (arc)-welded straight-seam or spiral-seam steel pipe 
in NPS 4 to 92 (Note 1) inclusive with nominal (average) wall thick-dimensions (Note 2) may be furnished provided 
such pipe complies with all other requirements of this specification. 

The grades of steel are pipe mill grades having mechanical properties which differ from standard plate grades, 
The pipe is intended for conveying liquid , gas, or vapor.

NOTE 1?The dimensionless designator NPS 9nominal pipe size) has been substituted in this standard for such traditional terms as "nominal diameter," "size," and "nominal size."

NOTE 2?A comprehensive listing of standardized pipe dimensions is contained in ANSI B36.10.

NOTE 3?T he suitability of pipe for various purposes is somewhat dependent on its dimensions, properties, and conditions of service. For example, for high-temperature service see applicable codes and Specification A 691. 


1.2 The values stated in inch-pound units are to be regarded as the standard. 
Chemical composition Mechanical Properties 

Chemical Composition
 

The steel shall conform to the chemical requirements prescribed in Table 1 and 
the chemical analysis shall be in accordance with Test methods, Practices, and Terminology A 751.

TABLE 1 Chemical Requirements

Element Composition, max, %
Grade A Grade B Grade C Grade D Grade E
Carbon ... 0.30 0.30 0.30 0.30
Manganese 1.00 1.00 1.20 1.30 1.40
Phosphorus 0.035 0.035 0.035 0.035 0.035
Sulfur 0.035 0.035 0.035 0.035 0.035

NPS Number of Samples Selected
Under 14 2 for each lot of 200 pipes or fraction thereof
14 to 36, incl 2 for each lot of 100 pipes or fraction thereof
Over 36 2 for each 3000 ft or fraction thereof




TABLE 2 Tensile Requirements


- Grade A Grade B Grade C Grade D Grade E
Tensile strength, min, ksi (MPa)
Yield strength, min, ksi (MPa)
Elongation in 2 in. or 50 mm, min. %
Basic minimum elongation for walls 5/16 in. (7.9 mm) and over in thickness, longitudinal strip tests
For longitudinal strips tests, a deduction for each 1/32-in. (7.9 mm) from the basic minimum elongation of the following percentageA
Elongation in 8 in. (203.2 mm), in min, % b.c
48 (331) 60 (414) 60 (414) 60 (414) 66 (455)
30 (207) 35 (241) 42 (290) 46 (317) 52 (359)
- - - - -
35 30 25 23 22
- - - - -
1.75A 1.50A 1.25 1.50 2.0
1 500 000/tensile strength

AThe table below gives the computed minimum values.

BFor wall thicknesses 1/2 in. (12.7 mm) and greater, the elongation may be taken in 8 in. (203.2 mm).

CThe elongation in 8 in. (203.2 mm) need not exceed 30 %.
Wall Thickness Elongation 2 in. or 50 mm, min, %
in. mm Grade A Grade B
5/16 (0.312) 7.94 35.00 30.00
9/32 (0.281) 7.14 33.25 28.50
1/4 (0.250) 6.35 31.50 27.00
7/32 (0.219) 5.56 29.75 25.50
3/16 (0.188) 4.76 28.00 24.00
5/32 (0.156) 3.97 26.25 22.50
1/8 (0.125) 3.18 24.50 21.00
3/32 (0.094) 2.38 22.75 19.50
1/16 (0.062) 1.59 21.00 18.00

Note-The above table gives the computed minimum elongation values for each 1/32-in.
(0.79-mm) decrease in wall thickness. Where the wall thickness lies between two values shown above,
the minimum elongation value shall be determined by the following equation:

Grade Equation
A E = 56t + 17.50
B E = 48t + 15.00
C E = 48t + 12.50
D E = 48t + 8
E E = 64t + 2

where: E = elongation in 2 in. (50 mm), %, andt = actual thickness of spectimen, in. Material Comparison Tables (ASTM -> KS, JIS, DIN, BS, NBN, NF, UNI) 

ASTMSTANDARD UNS NO. KOREA/JAPANES GERMAN BRITISH
KS/JIS Symbol KS/JIS Numbe Remarks DIN Type DIN Number Materiral Number Remarks B.S Number B.S Grade Remarks
A139 Electric-Fusion (Arc)-Welded Steel Pipe
Grade B K03003 (3) (3) 3602 SAW 410
Grade C K03004 (3) (3) 3602 SAW 410

ASTMSTANDARD UNS NO. BELGIAN FRENCH ITALIAN
NBN Type NBN Grade Remarks AFNOR Type NF Number Ramarks UNI Type UNI Number Ramarks
A139 Electric-Fusion (Arc)-Welded Steel Pipe
Grade B K03003 (3) (3)
Grade C K03004 (3) (3)

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