AISI 4130 flanges

AISI 4130 flanges

AISI 4130 is a low-alloy steel that nominally contains 0.3% carbon with 1% chromium, and 0.2% molybdenum in its chemical composition. The AISI 4130 Flange are ideal for oil patch applications. The Aisi 4130 Threaded Flange have low carbon content which enhances its weldability, but reduces its thickness strength. The AISI 4130 Slip On Flange alloy has hardenability limitations which should always be taken into account while using it in an equipment. The Chromoly 4130 Blind Flange material is very versatile and it shows good atmospheric corrosion resistance with a moderate strength. The Alloy Steel AISI 4130 Loose Flange is widely used in various structural applications for aircraft and building.

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Alloy 4130 blind flange and UNS G41300 slip on flanges suppliers in UAE

AISI 4130 specification


Aisi 4130 Flanges Specification

Specification Manufacturing size range Pressure class
  • ASTM A182 AISI 4130
  • ASTM SA182 AISI 4130
  • 1/2″ to 48″
  • 15NB – 1200NB
  • PN 2.5 – PN 400

Send your drawing to above AISI 4130 flanges suppliers & manufacturers for best quote

  • Class 150
  • Class 300
  • Class 600
  • Class 900
  • Class 1500
  • Class 2500
Coating types Types Marking
  • Black phosphating treatment
  • Electric zinc coated (Yellow zinc/ white)
  • Hot dip galvanized (Thickness 200μm)
  • Anti-rust painting
  • Oil Varnished
  • Alloy material coated (Clad/ Lined)
  • Electro galvanizing coating (Thickness 20-30μm)
  • AISI SAE 4130 lap joint flanges
  • AISI 4130 chromoly steel socket weld flanges
  • 4130 chrome moly weld neck flanges
  • A182 Gr 4130 threaded flanges
  • AISI 4130 steel LWN flanges (Long weld neck)
  • 4130 AISI slip on flanges
  • AISI 4130 blind flanges
  • UNS G41300 steel reducing flange
  • Material grade
  • Sizes
  • Standard name (EN 1092-1, ASME B16.5, JIS B2220, BS 4504, GOST 12820, SABS 1123)
  • Origin of material
  • Heat number
  • Manufacturers logo / name (OEM)
  • Manufacturing date
  • Face type
  • Pressure class
Types of AISI 4130 steel slip on flanges Types of 4130 AISI blind flanges Types of 4130 chromoly weld neck flanges
  • Raised face blind flange
  • Flat face blind flange
  • Long weld neck flange
  • Raised face weld neck flange
  • Flat face slip on flange
  • AISI 4130 raised face slip on flange
Applications and installations German standard Thread/screwed types of companion or SAE 4130 threaded flanges
  • Nuclear energy sector
  • Power generation plant
  • Industrial piping connection (High/ Low pressure)
  • Petrochemical plants
  • Construction & mechanical systems
  • industrial pressure vessels

Above AISI 4130 flanges suppliers have ex-stock and already supplied to many countries such as South Africa, Middle
east, Saudi Arabia, USA, Egypt & Oman

  • 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
  • MPT thread
  • BSPP thread (Female & male)
  • FPT thread
  • MNPT thread (Male)
  • FNPT thread (Female) – ASME B1.20.1
  • NPT thread
AISI 4130 75k flange meet the requirements of Value added services Manufacturing standard and origin country
  • NACE MR0175
  • NACE TM 0177
  • Sour service
  • ISO 15156
  • HIC tested
  • NACE MR0103
  • NACE TM-0284
  • EIL approved
  • PWHT
  • IBR approved
Above listed AISI 4130 flanges suppliers & manufacturers offer these services:

  • Fastest delivery in Saudi Arabia & Middle east
  • CNC machined
  • Casting
  • Threading
  • Electroplating
  • Forging
  • Drilling
  • Fabricate (100% Radiography)
  • Metal stampings
  • MTR’s Available
  • Polishing
  • Beveling end
  • Rolling
  • Minor Fabrication
  • Pickled
  • Cutting
  • Tagging & marking
  • Sand Blasting
  • De-burring
  • Heat Treatment (Hardening & Tempering)
  • Malaysia – MS 253
  • Malaysia – MS 816
  • Australia and UK – BS 10
  • Europe – PN 10 to PN400
  • USA – ASME B16.5
  • USA – MSS SP44
  • Japan – JIS
  • Germany – DIN
  • USA – API-605
  • Europe – BS EN 1092-1
  • USA – AWWA
  • Europe – BS EN 1092-3 (Alloy)
  • Europe – BS EN 1092-1 (Steel)
  • Italy – UNI 2276/ 6091
  • Europe – BS EN 1092-2 (Iron)-
  • USA – ANSI B16.5
  • Russia – Ghost
  • USA – ANSI
  • Europe – EN
  • UK & Australia – BS 10
  • Europe – PN
  • Korean – KS
  • Japan – JIS
  • Malaysia – MS 253
  • Germany – DIN
  • Europe – ISO 7005
  • USA – AWWA
  • France – NF E 29-200/ NF E 29-203
  • Italy – UNI 2276/ 6091
  • USA – API-605
  • USA – MSS SP44
  • Russia – Ghost
  • USA – ASA
  • USA – CL 125 (Light weight)
  • China – GB/T 9112 / 9119
  • Canada – CSA B16.5/ B16.47
  • Malaysia – MS 816
  • Australia – AS 2129
ASME standard of SAE 4130 forged flange 4130 steel flanges testing requirements Other special 4130 chromoly steel flanges
  • ASME B16.20 – Ring Joint Gaskets for 4130 chromium molybdenum steel Flanges
  • ASME B16.47 Series B (Formerly API 605 )- 4130 chrome moly steel large diameter flanges (26 to 60 NPS)
  • ASME B16.34 – 4130 chromoly steel large diameter flanges (26 to 60 NPS)
  • ASME B16.5 – 4130 steel forged Flanges, NPS 1/2 to 24″
  • ASME B16.36 – 4130 low alloy steel orifice flanges
  • ASME B16.21 – Nonmetallic Flat Gaskets for AISI 4130 60k Flanges
  • Positive Material Identification Test (PMI) – Important test to check chemical composition
  • Material inspection
  • Hardness test
  • Dry film thickness check (for coating thickness by an elcometer)
  • Tensile test
  • Verify AISI 4130 flanges are manufactured as per the work order
  • Impact test
  • Visual inspection
  • A182 Gr 4130 flange dimensional check by ruler, calibrated caliper or tape
  • Shell pressure test
  • 708A25 steel swivel flange
  • AISI 4130 anchor flange
  • AISI 4130 60k expander flange
  • AISI 4130 steel high hub blind flange
  • DIN 1.7218 spade flange
  • 4130 alloy steel orifice plate
  • UNS G41300 reducing flange
  • AISI SAE 4130 ring spacer flange

Get wide range of raised face AISI 4130 alloy steel weld neck flange from SCH 5s to XXS in Saudi Arabia & UAE,
contact above listed AISI 4130 flanges suppliers for more details

4130 chrome moly steel American standards Get quality assurance from above listed AISI 4130 flanges suppliers AISI 4130 60k & 75k meaning
  • Free replacement
  • Mill certificate
  • Third Party Inspection
  • EN 10204 3.1 Certificate
  • AISI 4130 60k flange : 60,000 psi tensile strength
  • AISI 4130 75k flange: 75,000 psi tensile strength

Aisi 4130 Flanges Standard Specification

ASTM A182 G41300 faces types

Full name Short name Marking on 4130 steel flanges
UNS G41300 flat face flanges FF FF Blind
AISI 4130 75k raised face flanges RF SORF
4130 chrome moly ring joint flanges RTJ RTJ
708A25 steel lap joint flanges LJ LJF
AISI 4130 male and female flanges M&F M&F
DIN 1.7218 large and small tongue and groove flanges T&G T&G

AISI 4130 Flanges chemical composition

Grade Manganese Sulfur Copper Carbon Iron Phosphorus Chromium Silicon Nickel Molybdenum
A182 Gr 4130 flanges 0.40-0.60 0.025 0.28-0.33 97.3-98.22 0.035 0.80-1.10 0.15-0.35 0.50 0.15-0.25

AISI 4130 forged flange mechanical properties

Grade Proof (Megapascals) minimum Yield Strength 0.2% Melting Point Elongation (% in 50mm) minimum Brinell Hardness Tensile Strength (Megapascals) minimum
AISI 4130 flanges 460 399 to 566°C (750 to 1050°F) 21.50 217 560

AISI 4130 flange equivalent

Standard EN JIS UNS Werkstoff Casting Equivalent BS
AISI 4130 25CrMo4 JIS G4105 G41300 1.7218 ASTM A915 SC 4130 BS 970

Aisi 4130 Flanges Properties

4130 alloy forging heat treatment

Grade Type of Heat Treat Cooling media Soak Time in Inch/Minutes of maximum thick of forging Temperature[°Celsius]
AISI 4130 alloy steel flanges Quenching Quenching in water, oil or polymer 30 830-870
Tempering Air 60 640 (min)

UNS G41300 flanges hardness

0.2% Proof (Yield) (kilo-pound per square inch) Hardness Range (Hardness Brinell Wolfram) UTS (kilo-pound per square inch)
60K 174-237 85K
70K 197-237 95K

SCM430 steel 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 4130 chromoly forged flange

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

4130 chromium molybdenum steel diameter and number of the bolt holes

Pressure class Hole
4130 chromoly Class 150 flanges 25.4 mm/ 12 holes
AISI SAE 4130 Class 300 flanges 28.6 mm / 16 holes
4130 chromoly steel Class 400 flanges 34.9 mm / 16 holes
25CrMo4 steel Class 600 flanges 34.9 mm/ 20 holes
AISI 4130 60k Class 900 flanges 38.1 mm/ 20 holes
4130 low alloy steel Class 1500 flanges 54 mm/ 16 holes
AISI 4130 chromoly Class 2500 flanges 73mm / 12 holes

4130 chrome moly steel flange pressure class rating

25CrMo4 steel flange form 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″
AISI 4130 alloy steel weld neck flange Class 150-2500 Class 150-2500 Class 150-2500
708A25 steel long weld neck flange Class 150-2500 Class 150-2500 Class 150-2500
4130 alloy slip on flange Class 150-1500
DIN 1.7218 lap joint flange Class 150-2500
ASTM A182 G41300 blind flange Class 150-2500 Class 150-2500 Class 150-2500
UNS G41300 socket weld flange Class 150-1500
SCM430 steel threaded flange Class 150-2500

Aisi 4130 pipe flanges and chromoly 4130 forged flange with 100% radiography test report as per ASME b16.5

Mill Test and hydrostatic tests can be done on SAE 4130 Flanges.

The Aisi 4130 Blind Flange material is a low-alloy steel which has chromium and molybdenum in its chemical composition. It is one of the most versatile material due to enhanced mechanical properties like enhanced ductility, weldability, and machinability.

Without the middleman, your direct purchasing of 4130 aircraft steel Sorf flanges can save you 30%-40% cost in the middle east and Africa

A AISI 4130 Pipe Flange typically consists of three parts: pipe flange, gaskets, and bolting.

AISI 4130 threaded flanges and chromoly 4130 weld neck flanges in cl 150-2500 pressure class. check UNS g41300 plate flanges weight and dimensions

The pressure class of the AS 4130 Forging Pipe Flange will be imprinted on it.

Buy all types of 4130 pipe flange as per ASME b16.5. View manufacturing methods, advantages, and disadvantages

The Chromoly 4130 weld neck flanges are manufactured through the forging process.