Description
UNS N08020 Alloy 20 Flanges
Alloy 20 flanges are designed for extreme resistance to corrosion in chemical and acidic environments. Manufactured in compliance with ASTM B462 and ANSI B16.5 standards, these flanges are ideal for applications involving sulfuric acid, nitric acid, and chloride-rich systems. Whether you require weld neck, blind, or slip-on designs, our Alloy 20 flanges deliver unmatched performance and durability. Suitable for use in chemical processing, food-grade systems, and marine installations, they provide exceptional strength and resistance to stress corrosion cracking. As a trusted supplier of corrosion-resistant alloy flanges, we offer fast delivery and customization options to meet your exact requirements.
Specifications of Alloy 20 Flanges
| Specifications | ASTM A182 / ASME SA182 |
|---|---|
| Class | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| Size | 1/2″ (15 NB) to 48″ (1200NB) |
| Standards | ANSI/ASME B16.5, B16.48, BS4504, B 16.47 Series A & B, BS 10, EN-1092, DIN, etc. |
Size Range of UNS N08020 Flanges
- ASME SA182 F316 Flange : 1/2″ (15 NB) to 48″ (1200NB)
- UNS S31600 Blind Flange : 1/2″ NB – 24″ NB
- 316 SS Slip on Flange : 1/2″ NB – 12″ NB
Chemical Composition of ASTM B462 Alloy 20 Flanges
| Alloy 20 | Ni | C | Mo | Mn | Si | Fe | Cu | S | P | Cr |
| 32 – 38 | 0.02 max | 2 – 3 | 1 – 2 | 0.7 max | Bal | 3 – 4 | 0.005 max | 0.02 max | 19 – 21 |
Mechanical Analysis of Alloy UNS N08020 Pipe Flange
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 8.1 g/cm3 | 1443 °C (2430 °F) | Psi – 35000 , MPa – 241 | Psi – 80000 , MPa – 551 | 30 % |
Types of Alloy 20 Pipe Flange
 |  |  |  |
| Blind Flanges | Lap Joint Flanges | Long Weld Neck Flanges | Plate Flanges |
 |  |  |  |
| Reducing Flanges | Ring Type Joint Flanges | Slip On Flanges | Socket Weld Flanges |
 |  |  |  |
| Weld Neck Flanges | Tongue & Groove Flanges | Threaded / Screwed Flanges | Spectacle Blind Flanges |
UNS N08020 Flanges Equivalent Grades
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | EN | JIS | BS | GOST |
| Alloy 20 | N08020 | 2.4660 | Z2NCUD31-20AZ | NiCr20CuMo |
Stock of 20 Alloy Pipe Flange
| Alloy 20 Flange | Alloy UNS N08020 Blind Flange |
| Alloy 2.4660 Slip on Flange | 20 Alloy Threaded Flange |
| Carpenter 20 Reducing Flange | UNS N08020 Socket Weld Flange |
| ASME SB462 Alloy 20 Weld Neck Flanges | ASTM B462 Alloy 20 Lap Joint Flanges |
| UNS N08020 Long Weld Neck Flanges | Alloy 2.4660 Spectacle Blind Flanges |
| Carpenter 20 Spades & Ring Spacers | Alloy UNS N08020 Nipoflange |
| 20 Alloy 5D Weldoflange | ASME SB462 Alloy 20 Flange Outlet |
| Alloy 20 Forged Flanges | UNS N08020 Plate Flange |
| 20 Alloy Ring Type Joint Flanges | Carpenter 20 Raised Face Flanges |
| ASTM B462 Alloy 20 Tongue and Groove Flanges | Alloy 2.4660 Male and Female Flange |
| ASME SB462 Alloy 20 Reducing Flanges | Alloy UNS N08020 ASME B16.5 Flanges |
| Alloy 20 Flanges | UNS N08020 BS 10 Flanges |
| Carpenter 20 BS 4504 Flanges | 20 Alloy EN 1092-1 Flanges |
| ASME SB462 Alloy 20 SORF Flange | Alloy 2.4660 BLRF Flange |
| Alloy UNS N08020 WNRF Flange | Alloy 20 Series a Lap Joint Ring Flange |
| UNS N08020 PN16 blind flange | Carpenter 20 Forged Socket Weld Pipe Flange |
| Alloy 2.4660 Class 300 slip on flange | ASME SB462 Alloy 20 Slip On Weld Flange |
| 20 Alloy Forged steel slip on flanges | Alloy UNS N08020 Race face slip on flange |
| Alloy 20 SWRF Flange | ASTM B462 Alloy 20 Forged blind flange |
| Alloy 2.4660 groove weld neck flange | UNS N08020 Socket Weld Hub Flange |
| Carpenter 20 threaded lap joint flange | Alloy UNS N08020 Slip On Integral flange |
| ASTM B462 Alloy 20 Forged integral puddle flange | 20 Alloy table e long weld neck |
| Alloy 2.4660 Class 150 LBS Flange | ASTM B462 Alloy 20 PN10 Forged Flanges |
