Name: ASTM A182 F5 Alloy Steel Weld Neck Flange Forged WNRF Black Coated
Brand: Yuhong Group Co.,Ltd
SKU: ASTM A182 F5 Alloy Steel WNRF Flange
Price: 150000.00 USD
Availability: InStock

Yuhong Holding Group Co.,LTD

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ASTM A182 F5 Alloy Steel Weld Neck Flange Forged WNRF Black Coated

Product Details:

Place of Origin:	CHINA
Brand Name:	YUHONG
Certification:	ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Model Number:	ASTM A182 F5 Alloy Steel WNRF Flange

Payment & Shipping Terms:

Minimum Order Quantity:	1PC
Packaging Details:	Ply-wooden Case / pallet
Delivery Time:	7 DAYS
Payment Terms:	L/C,T/T

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Detailed Product Description

Product Name:	Alloy Steel Flange	Dimensions:	ANSI Flange, ASME Flange, BS Flange, DIN Flanges, EN Flange
Standard:	ASTM A182 / ASME SA182	Material:	F5, F9, F11, F12, F22, F91
OD:	1/2" To 48"	Class:	150# 300# 600# 900# 1500#
WT:	Sch 5S To Sch XXS	Surface:	FF, RF, RTJ
Type:	Orifice Flange, Slip-on, Blind, Weldneck, Long Weldneck, SW Flange
Highlight:	ASTM A182 F5 Weld Neck Flange , Black Coated Weld Neck Flange , Forged Weld Neck Flange

ASTM A182 F5 Alloy Steel Forged Flange B16.5 WNRF Flange for Industries

ASTM A182 F5 WNRF Flange refers to the Weld Neck Raised Face flange, a design where the flange neck is welded to the pipe, and the sealing surface is slightly elevated (raised face) to enhance gasket compression and leak prevention. It is a specialized component used in high-temperature and high-pressure piping systems. Manufacturing Process--Produced via forging, ensuring superior structural integrity compared to cast alternatives. Conforms to ASME B16.5 for dimensions and pressure ratings (Class 150–2500).

Comparison with Similar Grades

ASTM A182 F5 vs. F9/F11:
- F9: Higher chromium (8–10%) for better oxidation resistance at extreme temperatures.
- F11: Similar to F5 but with added vanadium for enhanced creep strength .
ASTM A105 vs. A182 F5: A105 (carbon steel) is cheaper but unsuitable for high-temperature applications above 425°C (800°F) .

ASTM A182 F5 Alloy Steel Flange Chemical Composition

Grade	C	Mn	Si	S	P	Cr	Mo
A182 F5	0.15	0.3 – 0.6	0.5	0.03	0.03	4 – 6	0.044 – 0.65

ASTM A182 F5 Alloy Steel Flange Mechanical Properties

Grade	Tensile Strength (Mpa)	Yield Strength (Mpa)	Elongation %
A182 F5	275	485	20

Detailed Manufacturing Process

Forging: Heated to ~1200°C (2192°F), shaped via closed-die forging for grain refinement.
Heat Treatment:
- Normalizing: Heated to 900–950°C (1652–1742°F), air-cooled to refine microstructure.
- Tempering: Reheated to 650–700°C (1202–1292°F), then air-cooled to relieve stresses and enhance toughness.
Machining: CNC-machined to ASME B16.5 tolerances (e.g., bore diameter ±0.8 mm, face flatness <0.2 mm).
Surface Finish: Raised face (RF) serrations (125–250 µin RMS) for optimal gasket sealing.

Installation and Maintenance

Alignment: Weld neck flanges require precise alignment during welding to avoid stress concentration.
Bolt Tightening: Use ASME PCC-1 guidelines for bolt torque sequences to ensure even gasket compression .
In-Service Monitoring: Regular inspections for signs of creep, cracking, or pitting in high-temperature/pressure systems .

Industry-Specific Applications

Oil & Gas: Metering crude oil in high-pressure pipelines (e.g., API 14.3/AGA-3 standards).
Power Generation: Steam flow measurement in turbines (ASME PTC 6 compliant).
Petrochemical: Ethylene/cracker unit feed lines (resists hydrogen embrittlement).
Nuclear: Auxiliary cooling systems (ASTM A182 F5 is not for primary loops but used in secondary circuits).

ASTM A182 F5 Alloy Steel Weld Neck Flange Forged WNRF Black Coated 0