AISI 4140 Flanges

Manufacturing Sizes :

• DN15 – DN1500
• PN 2.5 – PN 400
• NPS: ½” to 48″

Melting Point :

• 1416°C

Advantages :

• High fatigue resistance
• Good machinability
• High tensile strength

Available THK :

• SCH 120/ 140
• SCH 160/ 180
• SCH 10/ 20/ 40
• SCH 60/ 80/ 100

Pressure Class :

• 125# To 150#
• 300# To 400#
• 600# To 900#
• 1500# To 2500#

ASME Standard :

• ASME B16.5
• ASME B16.36
• ASME B16.47
• ASME B16.48

Forging Temperature :

• 850°C (Minimum)

Supporting Material:

• Gaskets
• Bolts
• Ring Joint
• Nuts

Bolts Hole:

• 4 To 48

Machining Process :

• Choose material
• Forging
• Forming
• Drilling holes
• Inspection test
• Chamfering edges
• Cutting
• Sealing faces
• Heat treatment
• Machining
• Packaging

Threads Types :

• NPT
• MPT/ BSPT (Female)
• BSPP (Male & female)
• FPT
• BSP
• MNPT (Male)

Certificates :

• Third Party Inspection
• 100% Radiography Test
• MTC BS EN 10204 3.1/ 3.2
• NACE MR0175

Sealing Face :

• LJ face (Lap joint)
• M&F face (Male & female)
• FF face (flat)
• T&G face (Tongue & groove)
• RTJ face (Ring type joint)
• RF face (Raised)

Finish :

• Mirror finish
• Serrated finish
• Smooth finish
• Cold water finish
• Spiral serrated
• Concentric serrated
• Stock finish

Application :

• Petrochemicals industry
• Petrochemical plants
• Power generation plant
• Oil & gas plants
• Nuclear energy sector
• Sea water exchanger

Available Packaging :

• Plastic bag
• Wooden case
• Carton box
• Custom as required

Logistics Types :

• By Train
• By Sea
• By Air
• Oman = 5 to 6 days
• UAE = 6 to 7 day
• Bahrain = 9 to 10 days
• Saudi Arabia = 7 to 8 day
• Qatar = 7 day

Connection :

• Welding (Welded)
• TH (Threaded)

Marking :

• Sizes
• Material Origin
• Pressure Class
• ASME/ ASTM Standard
• Facing Type
• Grade
• Manufacturer logo
• Material

Density :

• 7.85 g/cc
• 0.284 lb/in³

Temperature :

• Up to 538°C

Manufacturing Method :

• Plate
• Forged
• Cast

Testing & Inspection :

• Impact test
• Material inspection
• PMI test
• Visual inspection
• Tensile test
• Hardness test

Specific Heat Capacity :

• 0.473 J/g-°C

Thermal Conductivity :

• 42.6 W/m-K

Modulus of Elasticity :

• 190-210 GPa

Electrical Resistivity :

• 0.0000220 ohm-cm

STANDARD

• AISI 4140 Flanges

UNS

• G41400

Werkstoff

• 1.7225

Casting Equivalent

• ASTM A915 SC 4140

Manganese [Mn] :

• 0.75-1.00%

Silicon [Si] :

• 0.15-0.35%

Phosphorus [P] :

• 0.035%

Sulfur [S] :

• 0.025%

Carbon [C] :

• 0.38-0.43%

Copper (Cu) :

• 0.80-1.10%

Chromium (Cr) :

• 0.80-1.10%

Nickel (Ni) :

• –

Melting Point

• 205 to 649°C

Yield Strength 0.2% (Proof)

• 415

Elongation (% in 50mm)

• 25.70% min.

Tensile Strength

• 655 MPa min.

Hardness

• 197 (Brinell)