ASTM A420 WPL6 Low Temperature for pipe fittings
ASTM A420 WPL6 is a typical low temperature material grade for
ASTM A420 WPL6 Elbow,Reducer,Tee,Caps available.
ASTM A420 covers wrought carbon steel and alloy steel fittings of seamless and welded construction,covered by the latestrevision of ASME B16.9,ASME B16.11,MSS SP-79,MSS SP-83,MSS SP-95,and MSS SP-97.Fittings differing from these ASME and MSS standards shall be furnished in accordance with Supplementary Requirement S58 of Specification A960/A960M.These fittings are for use in pressure piping and pressure vessel service atl ow temperatures.
A 90° elbow manufactured to ASTM A420 Gr. WPL6.4″ Sch std Long Radius
ASTM A420 WPL6 ELBOW is aSteel pipe elbow made of A333 Grade 6 Pipes,
It is an important parts in a piping system for to change the fluid flow direction. (90deg,45dge,180deg)It is used to connect two pipes with same or different nominal Diameter
ASTM A420 WPL6 Seamless pipe fittings is made of ASTM A333 Grade 6 Pipes.
ASTM A420 WPL6 chemical composition
The chemical composition of ASTM A420 WPL6 material is as below
| C | Mn | P | S | Si | Ni | Cr | Mo | Cu | Cb | V |
|---|---|---|---|---|---|---|---|---|---|---|
| ≤0.30 | 0.50~1.05 | ≤0.035 | ≤0.040 | 0.15~0.40 | ≤0.40 | ≤0.30 | ≤0.12 | ≤0.40 | ≤0.02 | ≤0.08 |
A420 WPL6 Material Mechanical Properties
TheA420 WPL6 tensile properties of the fittings material shall conform to the requirements for the applicable grade of
material as listed as below .Longitudinal or transverse specimens cut from either .a fitting or from starting plate or pipe they were manufactured
from shall be acceptable for the tension test. For fittings made from forgings, the test specimen shall meet the requirements of Specification A350/A350M for the tension test.
The notched bar impact properties of the base metal and weld metal shall conform to the requirements of Table 4 or
Table 5 for the applicable grade of material.Retest—When the average value of the three specimens equals or exceeds the minimum value permitted for a single specimen and the value for more than one specimen is below the required average value, or when the value for one specimen is below the minimum value permitted for a single specimen, a retest of three additional specimens shall be made.The value for each of these retest specimens shall equal or exceed the required average value. When an erratic result is caused by a defective specimen, or there is uncertainty in test procedure, a retest shall be allowed
ASTM A420 WPL6 Heat Treatment
Heat Treatment : All fittings shall be furnished in the normalized, normalized and tempered, annealed, or quenched and tempered condition. All welding shall be completed prior to the austenitizing heat treatment.
The full thickness of the material from which impact test specimens are to be obtained shall be heat treated with a furnace charge as specified in 10.4.2 or 10.4.3.
After forming, the fittings shall be allowed to cool below the lower critical before applying one of the heat treatments listed in 7.1. When the fittings are to be post-weld heat treated after being welded by the purchaser and when so specified in the order, the test specimens shall be subjected to the same post-weld heat treatment. The purchaser shall use the post-weld heat treatment shown in Table 2, unless otherwise specified in the order.
ASTM A420 WPL6 Dimensions:
Dimensions :
Butt-welding fittings and butt-welding shortradius elbows and returns purchased in accordance with this specification shall conform to the dimensions and tolerances given in the latest revision of ASME B16.9. Steel socket-welding and threaded fittings purchased in accordance with this specification shall conform to the sizes, shapes, dimensions, and tolerances specified in the latest revision of ASME B16.11.
Fittings of size or shape differing from these standards, but meeting all other requirements of the specification, shall be furnished in accordance with Supplementary Requirement S58 of Specification A 960 only by agreement with the purchaser
ASTM A420 WPL6 Pipe fittings Radio-Graphic Examination
All fusion-welded butt joints shall be subjected to full length radio-graphic inspection in accordance with ASME Boiler and Pressure Vessel Code. Generally speaking, radiography or ultrasonic examination shall be performed after all forming operations have been done. But if the fittings made from the pipes that has been done such test already, then no need to do again.
ASTM A420 WPL6 Pipe fittings Inspection
Unless otherwise agreed, all inspections should be performed at the manufacturer’s site. Other tests in case required by agreement shall be made from materials of the lots in the order.
ASTM A420 WPL6 Pipe fittings certification (EN 10204 MTC 3.1 or 3.2 )
When requested by the purchaser, the manufacturer shall provide a certificate of compliance to this specification. In addition, if requested to provide test reports, the manufacturer shall also provide the following where applicable:
1 Chemical analysis results, Section 8 (Table 1),
2 Tensile property results, Section 9 (Table 3) report yield strength and ultimate strength in ksi [MPa] and elongation in percent,
3 Impact test results, Section 10 (Table 4 and Table 5),
4 Type heat treatment, Section 7,
5 Radiographic examination statement, Section 14,
6 Any supplemental testing required by the purchase order.
Certification shall state whether welds have been examined radiographically or ultrasonically. Letters of compliance and test results shall state the specification number, year of issue, revi
ASTM A420 WPL6 Pipe fittings Product Markings
All fittings shall have the prescribed information marked on each fitting in accordance with MSS SP-25, latest revision.
Besides comply with A960/A960M, below requirements also shall be adopted.
a. Avoid sharp discontinuities of stamping, shall be done with blunt-nosed continuous or blunt-nosed interrupted dot stamps.
b. Agreed by buyer and seller, markings shall be painted or stenciled on the fittings or stamped on a metal or plastic tag which shall be secureley attached to the fitting.
c. Fittings contained welds that have been ultrasonically examined instead of radiography shall be marked “U” after heat identity.
d. Threaded or Socket Weld fittings shall be marked pressure class. Plugs and bushings furnished to ASME B16.11 requirements are not required to be marked.
