• +91 9664106499
  • gandhimetalindia@gmail.com
Get Quotes

Alloy Steel A182 F22 Flanges

Alloy Steel Flanges

Alloy Steel A182 F22 Flanges Specifications

Material Grades

  • Alloy Steel F22
  • ASTM A182 F22
  • ASME SA182 F22
  • F22 Class 1 / Class 3
  • UNS K21590
  • 2.25Cr-1Mo Alloy Steel
  • Chrome-Moly Alloy Steel
  • W.Nr. 1.7380

Flange Types

  • Weld Neck Flanges
  • Slip On Flanges
  • Blind Flanges
  • Socket Weld Flanges
  • Threaded Flanges
  • Lap Joint Flanges
  • Long Weld Neck Flanges
  • Orifice Flanges
  • Ring Type Joint Flanges
  • High Hub Blind Flanges

Flange Testing

  • Positive Material Identification (PMI)
  • Ultrasonic Testing
  • Magnetic Particle Testing
  • Radiographic Testing
  • Hydrostatic Testing
  • Tensile Testing
  • Hardness Testing
  • Dimensional Inspection

Value Added Services

  • Normalizing
  • Tempering
  • Heat Treatment
  • Machining
  • Pickling & Cleaning
  • Shot Blasting
  • Custom Finishing
  • Custom Marking

Manufacturing Standards

  • ASTM A182 F22
  • ASME SA182 F22
  • ASME B16.5
  • ASME B16.47 Series A & B
  • ASME B16.36
  • MSS SP-44
  • EN 1092-1
  • DIN Standards
  • Custom Drawings

Flanges Sizes

  • Size: 1/2" – 24" per ASME B16.5
  • Large Diameter: 26" – 60" per ASME B16.47
  • Pressure Class: 150 – 2500 LBS
  • Pressure Rating: PN6 – PN400
  • Faces: RF, FF & RTJ

ASTM A182 F22 Flanges Dimensions Chart

Nominal Size (NPS) Outside Diameter (mm) No. of Bolts Thickness (mm) Inner Diameter (mm) Bolt Hole Diameter (mm) Bolt Circle Diameter (mm)
1″ 114.30 4 14.22 35.05 9.65 95.25
1½″ 127.00 4 15.75 47.75 11.18 114.30
2″ 139.70 4 15.75 60.45 12.70 139.70
2½″ 152.40 4 19.05 73.15 12.70 152.40
3″ 165.10 4 19.05 88.90 14.22 177.80
4″ 190.50 4 22.10 114.30 15.75 203.20
5″ 215.90 8 25.40 139.70 15.75 228.60
6″ 241.30 8 28.45 165.10 19.05 254.00
8″ 279.40 8 31.75 215.90 19.05 304.80
10″ 330.20 8 35.05 266.70 22.35 355.60
12″ 381.00 12 38.10 317.50 22.35 406.40

ASTM A182 F22 Flanges Weight Chart

Nominal Size (NPS) Outside Diameter (mm) Face to Face (mm) Weight (kg)
1″ 114.30 23.88 1.27
1½″ 127.00 26.92 2.00
2″ 139.70 30.23 2.81
2½″ 152.40 35.05 3.67
3″ 165.10 39.62 4.76
4″ 190.50 47.75 6.35
5″ 215.90 53.85 8.26
6″ 241.30 60.45 10.61
8″ 279.40 69.85 15.69
10″ 330.20 79.25 22.23
12″ 381.00 85.85 30.98

Chemical Composition

Carbon (C)
0.05–0.15%
Manganese (Mn)
0.30–0.60%
Chromium (Cr)
1.50–2.50%
Molybdenum (Mo)
0.87–1.20%
Silicon (Si)
0.15–0.40%
Phosphorus (P)
0.025% max
Iron (Fe)
Balance
Density: 7.85 g/cm³
Melting Point: 1425–1510°C
Thermal Conductivity: 35.9 W/m·K at 100°C
Coefficient of Thermal Expansion: 11.7 × 10−6/°C
Specific Heat: 0.49 J/g·°C
Electrical Resistivity: 0.00093 Ω·cm

Mechanical Performance

620–900
MPa
Tensile Strength
345–550
MPa
Yield Strength
15%
minimum
Elongation
85
HRB
Hardness
Modulus of Elasticity: 117 GPa
Poisson's Ratio: 0.30
Material Grade: ASTM A182 F22 Class 1 / Class 3
UNS: K21590


MANUFACTURING

Forging Process

Each flange follows a rigorous 8-step forging and quality-control process to ensure conformance with ASTM A182 and ASME standards.

1

Material Selection

Prime 304 stainless steel billet sourced and certified.

2

Billet Preparation

Heat to 1100°C – 1250°C for optimal forgeability.

3

Forging

Shape billet into flange geometry under controlled pressure.

4

Heat Treatment

Solution anneal at 1040°C – 1120°C, then quench.

5

Machining & Finishing

CNC machining, drilling, and surface finishing.

6

Testing & Inspection

Tensile, hardness, PMI, visual and impact tests performed.