ASTM A194 Grade 7 Weld Neck Flanges

ASTM A194 Grade 7 Weld Neck Flanges are highly specialized forging components identified by their long tapered hub and smooth transition to the pipe wall, minimizing turbulence and concentrating stress into the pipe itself. These flanges are manufactured from the same heat-treated chromium-molybdenum alloy steel as the high-strength A194 Gr. 7 nut material, ensuring metallurgical compatibility and superior performance when used with B7 bolting in demanding environments. They are the preferred choice for critical, severe service applications involving high pressure, fluctuating temperatures, and sub-zero service, making them essential in power generation and petrochemical industries. Zeron Fasteners is a trusted manufacturer and supplier, providing Weld Neck Flanges engineered for maximum joint integrity.

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ASTM A194 Grade 7 Weld Neck Flanges Manufacturer in India

ASTM A194 Grade 7 Weld Neck Flanges Chemical Composition

Element Composition (% Maximum/Range)
Carbon (C) 0.38 to 0.48
Manganese (Mn) 0.75 to 1.00
Phosphorus (P) 0.035 maximum
Sulfur (S) 0.040 maximum
Silicon (Si) 0.15 to 0.35
Chromium (Cr) 0.80 to 1.10
Molybdenum (Mo) 0.15 to 0.25

ASTM A194 Grade 7 Weld Neck Flanges Mechanical Properties

Property Requirement (Based on A194 Gr. 7)
Tensile Strength, minimum 170000 psi (1172 MPa)
Yield Strength, minimum 150000 psi (1034 MPa)
Hardness (Brinell) 248 to 352 HBW
Reduction of Area, minimum Approx. 40%
Impact Test Required (Charpy V-notch)

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