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Alloy Steel · Flanges · ASTM A182 F22

ASTM A182 F22 Flanges

In short: ASTM A182 F22 flanges are used on P22 steam and refinery piping and pressure vessels.

P22
Designation
7.85
density, g/cm³
3.1 / 3.2
EN 10204 certificates
5
P22 product forms
P22 flanges: specification designationsASTM A182 F22 DESIGNATIONS FOR P22 FLANGES ASTM A182 F22 Marked on every piece with heat number and size; matched to the 3.1 / 3.2 certificate.
Calculated values for estimating; actual weights vary within tolerances.

Why this combination

Why P22 in flanges

1.9–2.6% Cr, 0.87–1.13% MoHigher creep strength than P11Standard for hydroprocessing reactors (A387 Gr 22)Good hydrogen-attack resistance

F22 flanges match the pipe's chemistry and high-temperature strength.

Bolting is selected for temperature, often B16.

Specification

How to specify ASTM A182 F22

NPS ½" – 24" (B16.5), 26" – 60" (B16.47 Series A/B); Class 150, 300, 600, 900, 1500, 2500; EN 1092-1 PN 6 – PN 100 on request

P22 flanges ASTM A182 F22
P22 flanges: ASTM A182 F22
Specification
ASTM A182 F22
Dimensions
ASME B16.5 / B16.47

Sizes and weights

ASTM A182 F22 sizes, weighed at 7.85 g/cm³

Other sizes on request. For general flanges information, such as manufacturing routes and end finishes, see the flanges guide.

NPS ½" – 24" (B16.5), 26" – 60" (B16.47 Series A/B); Class 150, 300, 600, 900, 1500, 2500; EN 1092-1 PN 6 – PN 100 on request

Chemistry

P22 composition

Density
7.85 g/cm³
P22 Alloy Steel (2¼% chromium-1% molybdenum) chemical composition, % (ASTM A335 (P22))
ElementLimit, %Why it matters
C0.05 – 0.15
Mn0.30 – 0.60
P0.025 max
S0.025 max
Si0.50 max
Cr1.90 – 2.60
Mo0.87 – 1.13

Limits per ASTM A335 (P22); other product forms and specifications differ slightly. Your order's specification and edition govern.

0%5%10% Cr Mo
Main alloying elements of P22 Alloy Steel (2¼% chromium-1% molybdenum): bars show the permitted range (ASTM A335 (P22)).

Questions

About ASTM A182 F22

Which class of F22 flange?

Class 1 or Class 3 per A182; confirm with the design.

Are F22 flanges IBR available?

Yes, where required.

From enquiry to dispatch

How a ASTM A182 F22 order runs

  1. 01 EnquiryGrade, specification, size, quantity
  2. 02 ReviewChecked against your standard
  3. 03 InspectPMI, dimensions, TPI if required
  4. 04 CertifyEN 10204 3.1 / 3.2, heat traceable
  5. 05 ShipPacked and documented for the destination

Need ASTM A182 F22?

Send size, quantity, specification and destination. We reply with availability, certificates and delivery.

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