Email:sales@chrome-moly-pipe.com
Need help? Contact Us! +86 13733279413
Name: | ASTM A860 Specification |
Specificaiton: | ASTM A860, MSS-SP-75 |
Size:: | 1/4" to 60" |
Rating: | SCH10 through SCHXXS |
Steel Grade: | A860 WPHY 42, WPHY 52, WPHY 56, WPHY 60, WPHY 65, WPHY 70 |
MOQ: | 100 KGS |
Ends: | PE OR BE |
Delivery term: | FOB, CNF, CIF and EXW |
Payment Term: | TT or LC At sight |
Loading Port: | XINGANG |
Deliver mode: | By Sea, By Air and By Land |
Packing: | Standard seaworthy/airworthy packing |
1.1 ASTM A860 specification covers wroughthigh – strength ferritic steel butt-welding fitting of seamless and electric and fusion-weldedconstruction covered by the latest revision of ASME B16.9 and MSS-SP-75 .Butt-welding fittings differing from these ASME and MSS standards shall be furnishedin accordance with Supplementary Requirements S58 of specification A960/A960M . These fittings are for use in high – pressure gas and oil transmission and distribution system .
The material for fittings shall be fully killed fine – grain material made by a melting process that is intended to producer ounded , well dispersed , fine sulphide inclusions , that promote good notch toughness , assists in the resistance to hydrogen induced cracking ,and for weldability suitable for field welding .
All butt – weld tees manufactured by cold –forming methods shall be liquid penetrant or magnetic particle examined by one of the specified in supplementary Requirements S69 or S70 of Specification a960/A960M . this examination shall be performed in accordance with a written procedure and shall be performed after final heat treatment . only the side wall area of the test needs be examined . this area is defined by a circle that covers area from the weld bevel of the branch outlet to the center line of the body or run . Internal and external surface shall be examined when size permits permits accessibility . No cracks shall be permitted . other imperfections shall be treated in accordance with 12.1 on finish . After the removal of any cracks , the tees shall be re-examined by the removal of any Acceptable tees shall be marked with the symbol PT or MT , as applicable , to indicate compliance . NDE personal shall be qualified in accordance with SNT-TC-1A .
All fittings shall be furnished in the heat-treated condition . fittings formed above the transformation temperature orupon which welding is performed , ASTM A860/A860M-09 shall be cooled to below the lower critical temperature prior to heat treatment . Fittings shall subsequently be heat treat edby normalizing , quenching , and tempering or stress relieving in accordance with specification A960/A960M
Composition % |
||
Heat Analysis |
||
Carbon |
0.20ᴬ |
All values are |
Manganese |
1.00-1.45 |
|
Phosphorus |
0.03 |
|
Sulfur |
0.01 |
|
Silicon |
0.15-0.40ᴮ |
|
Nickel |
0.5 |
|
Chromium |
0.3 |
|
Molybdenum |
0.25 |
|
Copper |
0.35 |
|
Titanium |
0.05 |
|
Vanadium |
0.1 |
|
Columbium |
0.04 |
|
Vanadium plus Columbium |
0.12 |
|
Aluminium |
0.06 |
ASTM A860/ 860M |
Yield Strength, min. |
Tensile Strength |
Elongation, min. |
Cv, avg./min. |
|||
Grade |
ksi |
MPa |
ksi |
MPa |
% |
ft*lbs |
J |
WPHY 42 |
42 |
290 |
60-85 |
415-585 |
25 |
30/25 |
40/34 |
WPHY 46 |
46 |
315 |
63-88 |
435-605 |
25 |
30/25 |
40/34 |
WPHY 52 |
52 |
360 |
66-91 |
455-625 |
25 |
30/25 |
40/34 |
WPHY60 |
60 |
415 |
75-100 |
515-690 |
20 |
30/25 |
40/34 |
WPHY 65 |
65 |
450 |
77-102 |
530-705 |
20 |
30/25 |
40/34 |
WPHY 70 |
70 |
485 |
80-105 |
550-725 |
20 |
ASTM A860 WPHY 65, WPHY 60, WPHY 52, WPHY 46, WPHY 42, WPHY 56 & WPHY 70 buttweld pipe fittings in Wrought High Yield Steel are generally used at High-pressure requirements.