Overview
Inconel 625 (UNS designation NO6625) is a nickel-based superalloy that possesses high strength properties and resistance to elevated temperatures. It also demonstrates remarkable protection against corrosion and oxidation. Its ability to withstand high stress and a wide range of temperatures, both in and out of water, as well as being able to resist corrosion while being exposed to highly acidic environments makes it a fitting choice for nuclear and marine applications.
The Ring Type Joint flanges are typically used in high pressure (Class 600 and higher rating) and/or high temperature services above 800°F (427°C). They have grooves cut into their faces which steel ring gaskets. The flanges seal when tightened bolts compress the gasket between the flanges into the grooves, deforming (or Coining) the gasket to make intimate contact inside the grooves, creating a metal to metal seal.
An RTJ flange may have a raised face with a ring groove machined into it. This raised face does not serve as any part of the sealing means. For RTJ flanges that seal with ring gaskets, the raised faces of the connected and tightened flanges may contact each other. In this case the compressed gasket will not bear additional load beyond the bolt tension, vibration and movement cannot further crush the gasket and lessen the connecting tension.
Specification
ASTM B564-19 Standard Specification for Nickel Alloy Forgings
| B564 N06625 Flange Size Chart | 1/2"(15 NB) to 48"(1200NB) DN10~DN5000 |
|---|---|
| B564 UNS N06625 SORF Flange Standards | ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092 |
| B564 Gr. N06625 Flange Pressure Rating ANSI | Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS |
| ASTM B564 UNS N06625 Flange Pressure Calculation in DIN | 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 |
| ASTM B564 N06625 Flange JIS | 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K |
| ASTM B564 N06625 Flange UNI | 6Bar 10Bar 16Bar 25Bar 40Bar |
| SB564 N06625 FlangeEN | 6Bar 10Bar 16Bar 25Bar 40Bar |
| Most common types of SB 564 UNS N06625 Flange | Forged / Threaded / Screwed / Plate |
| Test Certificates | EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc |
| ASTM B564 UNS N06625 Flange Production technique | Forged, Heat treated and machined |
Chemical Composition
| Cr | Mo | Co | Nb+Ta | Al | Ti | C | Fe | Mn | Si | P | S | Ni | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | 20 | 8 | -- | 3.15 | -- | -- | -- | -- | -- | -- | -- | -- | Balance |
| Max | 23 | 10 | 1 | 4.15 | .4 | .4 | .1 | 5 | .5 | .5 | .015 | .015 | Balance |
Mechanical Properties
Temp° F | Tensile (psi) | .2% Yield (psi) | Elongation in 2"(%) |
|---|---|---|---|
70 | 144,000 | 84,000 | 44 |
400 | 134,000 | 66,000 | 45 |
600 | 132,000 | 63,000 | 42.5 |
800 | 131,500 | 61,000 | 45 |
1000 | 130,000 | 60,500 | 48 |
1200 | 119,000 | 60,000 | 34 |
1400 | 78,000 | 58,500 | 59 |
1600 | 40,000 | 39,000 | 117 |
- 1. Engine thrust-reverser systems
- 2. Specialized seawater equipment
- 3. Chemical process equipment
