ASTM A420 Wpl3 Wpl6 Wpl8 Wpl9 Alloy Steel Pipe Fittings

• Connection: Welding
• Shape: Equal
• Head Code: Round
• Angle: 90 Degree
• Wall Thickness: STD
• Material: Alloy
• Model NO.: KM-20210128
• Technics: Forged
• Certification: ASME, ANSI, DIN, JIS, BS, GB, API
• Color: Black
• Size: 1/2" -48"
• Delivery Time: 20~35 Days After Down Payment
• Range: Reducer, Tee, Elbow, Cap, Lap Joint etc
• Surface: Oil Caoting,Varnish Coating,etc.
• Alloy or Not: Is Alloy
• Secondary or Not: Non Secondary
• Price Term: Fob,CIF,CNF
• Payment: L/C,T/T
• Standard or Not: Standard
• MOQ: as Requested
• Transport Package: in Wooden Box, in Wooden Pallet
• Specification: 1/2" -48"
• Trademark: kingmetal
• Origin: China (Mainland)
• HS Code: 730723
• Production Capacity: 2000 Tons Per Month

Product Description

ASTM A420 WPL3 WPL6 WPL8 WPL9 Alloy Steel Pipe Fittings

ASTM A420 is the standard specification for pipe fittings of wrought carbon steel and alloy steel for low temperature service. These fitting, either of seamless or welded construction, are primarily used in pressure piping and pressure vessel service at low temperatures. Metals-Piping can provide all the four steel grades covered by ASTM A420: WPL6, WPL9, WPL3, and WPL8.


Standard:ASTM A420
Size:1/2" -48"
Thickness: Sch10~SCH XXS(1mm~50mm)
Material: WPL3,WPL6,WPL8,WPL9
Usage: Use for petroleum, chemical, nuclear, power, ship-building, papermaking, food, water, gas, medicine, construction industry etc.

Elements	WPL6, %	WPL9, %	WPL3, %	WPL8, %
Carbon [C]	≤0.30	≤0.20	≤0.20	≤0.13
Manganese [Mn]	0.50-1.35	0.40-1.06	0.31-0.64	≤0.90
Phosphorus [P]	≤0.035	≤0.030	≤0.05	≤0.030
Sulfur [S]	≤0.040	≤0.030	≤0.05	≤0.030
Silicon [Si]	0.15-0.40	…	0.13-0.37	0.13-0.37
Nickel [Ni]	≤0.40	1.60-2.24	3.2-3.8	8.4-9.6
Chromium [Cr]	≤0.30	...	...	...
Molybdenum [Mo]	≤0.12	...	...	...
Copper [Cu]	≤0.40	0.75-1.25	…	…
Columbium [Cb]	≤0.02	...	...	...
Vanadium[V]	≤0.08	...	...	...

*For grade WPL6, the limit for Columbium may be increased up to 0.05% on heat analysis and 0.06% on product analysis.
*Fittings of WPL3 made from plate or forgings may have 0.90 % max manganese.
*Fittings of WPL8 made from plate may have 0.98 % max manganese.

 

2. ASTM A420 Mechanical Properties

 

ASTM A420/ A420M	Tensile Strength, min.	Yield Strength, min.	Elongation %, min
Grade	ksi	MPa	ksi	MPa	Longitudinal	Transverse
WPL6	65-95	415-655	35	240	22	12
WPL9	63-88	435-610	46	315	20	…
WPL3	65-90	450-620	35	240	22	14
WPL8	100-125	690-865	75	515	16	…

*All the elongation values are on the basis of standard round specimen, or small proportional specimen, min % in 4 D.

 

3. Impact Test Properties

Since these pipe fittings are primarily used for low-temperature service, the properties of charpy V-notch impact test must be considered.

 

Charpy Impact Requirements for WPL6, WPL9, and WPL3
Size of Specimen	A*		B*
mm	ft·lbf	J	ft·lbf	J
10 by 10.0	13	17.6	10	13.6
10 by 7.5	10	13.6	8	10.8
10 by 5.0	7	9.5	5	7.0
10 by 2.5	4	5.4	3	4.1

A*Charpy V-Notch Impact Value Required for Acceptance (Average of Three Specimens)
B*Minimum Charpy V-Notch Impact Value Without Requiring Retest (One Specimen Only of a Set)

 

 

Charpy Impact Requirements for WPL8
Size of Specimen	A*		B*
mm	ft·lbf	J	ft·lbf	J
10 by 10.0	25.0	33.9	20.0	27.1
10 by 7.5	21.0	28.5	17.0	23.1
10 by 5.0	17.0	23.1	14.0	19.0
10 by 2.5	8.0	10.8	6.0	8.1

A*Charpy V-Notch Impact Value Required for Acceptance (Average of Three Specimens)
B*Minimum Charpy V-Notch Impact Value Without Requiring Retest (One Specimen Only of a Set)

 

Impact Test Temperature
Grade	°F [°C]
WPL6	−50 [−45]
WPL9	−100 [−75]
WPL3	−150 [−100]
WPL8	−320 [−195]

4. Material and Manufacture

The raw material for these fittings shall be fully killed steel, consisting of forgings, bars, plates, sheet, and seamless or fusion welded tubular products(pipes, tubes, or cylinders). The steels shall be made using recognized melting practices necessary to produce steels that shall meet the impact requirements of ASTM A420.
 

Surface treament: Black painting, anti-rust varnish, anti-rust oil, hot galvanized