AISI 4140 flanges

AISI 4140 Flanges

The AISI 4140 material is basically a low alloy steel which contains chromium, molybdenum, and manganese in its chemical composition. The SAE 4140 Flange is widely known for its high toughness, fatigue strength, abrasion, and impact resistance. The G41400 Blind Flanges are known for their versatility and high performances. The UNS G41400 Threaded Flange comes with enhanced strength and hardenability, and it has high ductility too. The SAE 4140 Industrial Flange can withstand wear in quenched and tempered conditions. It can resist creep up to the temperature of 538 degrees C. The DIN 1.7225 Welding Neck Flange can maintain its properties even after getting exposed to comparatively high temperatures for a long time. The AISI 4140 WNRF Flange are widely used in aerospace and oil and gas industries.

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SAE g41400 blind flange and DIN 1.7225 slip on flanges suppliers in UAE

AISI 4140 flanges specification


Aisi 4140 Flanges Specification

Specification Manufacturing size range Pressure class
  • ASTM A182 AISI 4140
  • ASTM SA182 AISI 4140
  • 1/2″ to 48″
  • 15NB – 1200NB
  • PN 2.5 – PN 400

For larger sizes please contact above AISI 4140 flanges manufacturers & suppliers in UAE

  • 150#
  • 300#
  • 600#
  • 900#
  • 1500#
  • 2500#
Coating types Types Marking
  • Black phosphating treatment
  • Anti-rust painting
  • Hot dip galvanized (Thickness 200μm)
  • Electro galvanizing coating (Thickness 20-30μm)
  • Electric zinc coated (Yellow zinc/ white)
  • Oil Varnished
  • Alloy material coated (Clad/ Lined)
  • ASTM A182 G41400 lap joint flanges
  • AISI 4140 60k weld neck flanges
  • 4140 chromoly steel socket weld flanges
  • AISI 4140 75k LWN flanges (Long weld neck)
  • 4140 chromium molybdenum steel threaded flanges
  • AISI 4140 chromoly steel slip on flanges
  • AISI 4140 chromoly blind flanges
  • AISI 4140 steel reducing flange
  • Material grade
  • Manufacturers logo / name (OEM)
  • Origin of material
  • Manufacturing date
  • Sizes
  • Standard name (EN 1092-1, ASME B16.5, JIS B2220, BS 4504, GOST 12820, SABS 1123)
  • Face type
  • Pressure class
  • Heat number
Types of 4140 chrome moly steel blind flanges Types of 4140 chrome moly weld neck flanges Types of AISI 4140 chromoly steel slip on flanges
  • ASTM A182 G41400 flat face blind flange
  • AISI SAE 4140 raised face blind flange
  • Flat face weld neck flange
  • AISI 4140 60k long weld neck flange
  • 4140 steel raised face weld neck flange
  • AISI 4140 steel flat face slip on flange
  • 42CrMo4 steel raised face slip on flange
Applications and installations German standard Thread/screwed types of companion or SAE 4140 threaded flanges
  • Power generation plant
  • Industrial piping connection (High/ Low pressure)
  • Petrochemical plants
  • Construction & mechanical systems
  • industrial pressure vessels
  • Nuclear energy sector

These listed AISI 4140 flanges suppliers are physically verified also they have 5+ years experience in supplying
UNS G41400 steel flange in South Africa, Middle east, Oman, Egypt, USA & Saudi Arabia

  • DIN 2578, 2573 Type 1 – flat
  • DIN 2527 Type 5 – blind
    DIN 2627 to 2638 Type 11 – Weld neck
  • DIN 2558, 2565, 2566, 2567, 2568, 2569 Type 12 – threaded
  • DIN 2622, 2641, 2655, 2656 Type 2, 4 Lapped
  • BSPT thread (Female)
  • BSP thread
  • BSPP thread (Female & male)
  • MPT thread
  • FPT thread
  • FNPT thread (Female) – ASME B1.20.1
  • MNPT thread (Male)
  • NPT thread
AISI 4140 pipe flange meet the requirements of Value added services Manufacturing standard and origin country
  • Sour service
  • NACE MR0103
  • NACE TM 0177
  • ISO 15156
  • EIL approved
  • PWHT
  • NACE MR0175
  • HIC tested
  • IBR approved
  • NACE TM-0284

Above listed AISI 4140 flanges suppliers & manufacturers offer these services:

  • CNC machined
  • Casting
  • Threading
  • Fastest delivery in Saudi Arabia & Middle east
  • MTR’s Available
  • Forging
  • Polishing
  • Electroplating
  • Fabricate (100% Radiography)
  • Drilling
  • Cutting
  • Metal stampings
  • Beveling end
  • Minor Fabrication
  • Rolling
  • Sand Blasting
  • Tagging & marking
  • De-burring
  • Pickled
  • Heat Treatment (Hardening & Tempering)
  • USA – ASME B16.5
  • Malaysia – MS 253
  • USA – MSS SP44
  • Malaysia – MS 816
  • USA – API-605
  • Australia and UK – BS 10
  • Germany – DIN
  • Europe – BS EN 1092-1
  • Japan – JIS
  • Europe – PN 10 to PN400
  • Europe – BS EN 1092-1 (Steel)
  • USA – AWWA
  • Europe – BS EN 1092-2 (Iron)-
  • USA – ANSI B16.5
  • Italy – UNI 2276/ 6091
  • Korean – KS
  • Russia – Ghost
  • UK & Australia – BS 10
  • Europe – EN
  • Europe – BS EN 1092-3 (Alloy)
  • Europe – PN
  • Germany – DIN
  • USA – ANSI
  • Malaysia – MS 253
  • Japan – JIS
  • USA – AWWA
  • Europe – ISO 7005
  • USA – API-605
  • France – NF E 29-200/ NF E 29-203
  • USA – CL 125 (Light weight)
  • USA – ASA
  • Italy – UNI 2276/ 6091
  • USA – MSS SP44
  • Canada – CSA B16.5/ B16.47
  • China – GB/T 9112 / 9119
  • Malaysia – MS 816
  • Russia – Ghost
  • Australia – AS 2129
ASME standard of 4140 steel forged flange Inspection plan Other special AISI 4140 60k flanges
  • ASME B16.5 – 4140 chrome moly forged Flanges, Nominal Pipe Size 1/2 to 24″
  • ASME B16.20 – Ring Joint Gaskets for 1.7225 steel Flanges
  • ASME B16.21 – Nonmetallic Flat Gaskets for UNS G41400 steel Flanges
  • ASME B16.36 – AISI 4140 alloy steel orifice flanges
  • ASME B16.34 – AISI 4140 large diameter flanges (26 to 60 Nominal Pipe Size)
  • ASME B16.47 Series B (Formerly API 605 )- SAE 4140 large diameter flanges (26 to 60 Nominal Pipe Size)
  • Shell pressure test
  • Tensile test
  • Verify AISI 4140 flanges are manufactured as per the work order
  • Impact test
  • Visual inspection
  • Positive Material Identification Test (PMI) – Important test to check chemical composition
  • Material inspection
  • AISI 4140 pipe flange dimensional check by ruler, calibrated caliper or tape
  • Hardness test
  • Dry film thickness check (for coating thickness by an elcometer)
  • UNS G41400 steel high hub blind flange
  • 4140 alloy steel swivel flange
  • AISI 4140 75k anchor flange
  • AISI 4140 expander flange
  • ASTM A182 Gr 4140 orifice plate
  • 4140 low alloy steel reducing flange
  • 4140 alloy spade flange
  • 4140 AISI ring spacer flange

Contact top 10 IBR approved AISI 4140 flanges suppliers & maufacturers for high quality material

ASTM A182 G41400 flanges American standards Get quality assurance from above listed AISI 4140 flanges suppliers Bolt Holes
  • Free replacement
  • Mill certificate
  • Third Party Inspection
  • EN 10204 3.1 Certificate
  • 4 to 24

Aisi 4140 Flanges Standard Specification

ASTM A182 UNS g41400 square flanges and werkstoff nr. 1.7225 welding neck flange for noncritical applications in GCC countries

AISI 4140 pipe flange faces types

Full name Short name Marking on SAE 4140 flanges
4140 chromoly flat face flanges FF FF Blind
4140 AISI raised face flanges RF SORF
ASTM A182 Gr 4140 ring joint flanges RTJ RTJ
AISI SAE 4140 lap joint flanges LJ LJF
42CrMo4 steel male and female flanges M&F M&F
UNS G41400 large and small tongue and groove flanges T&G T&G

AISI 4140 chemical composition

Grade Manganese Sulfur Copper Carbon Phosphorus Chromium Silicon Molybdenum
A182 Gr 4140 flanges 0.75-1.00 0.025 0.80-1.10 0.38-0.43 0.035 0.80-1.10 0.15-0.35 0.15-0.25

SAE 4140 flanges mechanical properties

Grade Proof (Megapascals) minimum Yield Strength 0.2% Melting Point Elongation (% in 50mm) minimum Brinell Hardness Tensile Strength (Megapascals) minimum
AISI4140 flange 415 205 to 649°C (400 to 1200°F) 25.70 197 655

AISI 4140 equivalent

Standard UNS Werkstoff Casting Equivalent
AISI 4140 G41400 1.7225 ASTM
A915 SC 4140

Aisi 4140 Flanges Properties

AISI 4140 alloy steel flanges heat treatment

Grade Type of Heat Treat Cooling media Soak Time in Inch/Minutes of maximum thick of forging Temperature[°Celsius]
4140 AISI flanges Normalising Air 30 860-910
Quenching Quenching in water, oil or polymer 30 820-870
Tempering Air 60 670 (min)

ASTM A182 Gr 4140 flange pressure temperature ratings

Temp.°F 75# PSIG 150# PSIG 300# PSIG 400# PSIG
-20~100 145 290 750 1000
200 130 260 750 1000
300 115 230 720 965
400 100 200 695 925
500 85 170 665 885
600 70 140 605 805
650 60 125 590 785
700 110 570 755
750 95 530 710
800 80 510 675
850 65 485 650
900 50 450 600
950 35 320 425
1000 20 215 290
1050 145 190
1100 95 130
1150 65 85
1200 40 55

 

Temp.°F 600# PSIG 900# PSIG 1500# PSIG 2500# PSIG
-20~100 1500 2250 3750 6250
200 1500 2250 3750 6250
300 1445 2165 3610 6015
400 1385 2080 3465 5775
500 1330 1995 3325 5540
600 1210 1815 3025 5040
650 1175 1765 2940 4905
700 1135 1705 2840 4730
750 1065 1595 2660 4430
800 1015 1525 2540 4230
850 975 1460 2435 4060
900 900 1350 2245 3745
950 640 955 1595 2655
1000 430 650 1080 1800
1050 290 430 720 1200
1100 190 290 480 800
1150 130 195 325 545
1200 80 125 205 345

Welding requirements of 42CrMo4 steel flange

  • GTAW(TIG) process
  • GMAW(MAG) process

AISI 4140 forged steel flange diameter and number of the bolt holes

Pressure class Hole
UNS G41400 Class 150 flanges 25.4 mm/ 12 holes
4140 alloy Class 300 flanges 28.6 mm / 16 holes
1.7225 steel Class 400 flanges 34.9 mm / 16 holes
AISI 4140 chromoly Class 600 flanges 34.9 mm/ 20 holes
AISI 4140 chromoly steel Class 900 flanges 38.1 mm/ 20 holes
4140 steel Class 1500 flanges 54 mm/ 16 holes
AISI SAE 4140 Class 2500 flanges 73mm / 12 holes

4140 low alloy steel flange pressure class rating

Type ASME/ ANSI B16.5 ASME/ ANSI B16.47 (Series A/ MSS SP44) ASME/ ANSI B16.47 (Series B/ API605)
Size: 0.5″ to 24″ Size: 26″ to 60″ Size: 26″ to 60″
Weld neck Class 150-2500 Class 150-2500 Class 150-2500
Long weld neck Class 150-2500 Class 150-2500 Class 150-2500
Slip on Class 150-1500
Lap joint Class 150-2500
Blind Class 150-2500 Class 150-2500 Class 150-2500
Socket weld Class 150-1500
Threaded Class 150-2500

SAE 4140 lap joint flanges manufacturers in Dubai can supply to your specifications at a great deal. Check alloy steel AISI 4140 industrial flanges dimensions and MTC

Material Test and additional tests like hydro test can be done on AISI 4140 Flange to ensure their quality, specification, dimension, and properties.

The SAE 4140 Industrial Flange are widely used in components such as axels, gears, shafts, bolts, etc. They are also found in oil and gas extraction for sour well and refineries.

Check SAE 4140 ring type joint flanges advantages. buy UNS g41400 threaded flange from verified suppliers in the middle east and South Korea

The advantages of AISI 4140 Pipe Flange would include:

  • Good resistance to atmospheric corrosion
  • Moderable strength up to 315 degrees C
  • Increased toughness, fatigue strength
  • Enhanced resistance to impact and abrasion
Verified UNS g41400 forged flanges stockists in Bahrain who can machine to exact specifications in various finishes as per ASME b16.5 standards

The Alloy steel AISI 4140 Flange show good performance till 583 degrees C after which it is susceptible to creep.