26"-48" RF FF RTJ 150#-900#Blind Nickel Alloy Pipe Flanges ASME
B16.47 Series B Alloy 20
1. Alloy 20 Chemistry & Specifications
Also known as Carpenter 20 and 20CB-3, Alloy 20 flanges offer users
a combination of nickel, chromium, molybdenum, and copper which
provides good general corrosion resistance. Alloy 20 flanges are
best suited for mid-range corrosion use – better than steel alloys
but not at the level of high performance nickel based alloys like Hastelloy C276. Alloy 20 is a nickel alloy that was specifically designed to
withstand the harsh environment of hot sulfuric acid but also
performs well in a variety of other acids. Alloy 20 flanges are an
ideal choice when you don’t need the corrosion resistance power and
price-tag of high performance nickel alloys like Hastelloy C276;
but you need something that will give you more protection than 316
stainless steel or even a Super Duplex 2507 stainless steel.
Alloy 20 Specifications: UNS N08020, ASME SA240, , ASME SB366, ASME SB462, ASME SB463, ASME
SB464, ASME SB473, ASME SB729, ASTM A240, ASTM B366, ASTM B463,
ASTM B464, ASTM B473, ASTM B729, ASTM BB462, ANSI/ASTM A555-79, EN
2.4660, , Werkstoff 2.4660, CN7M, DIN 2.4660
| Alloy 20 | Ni | Cr | Mo | Mn | Cu | Si | C | S | P | Cb+Ta | Fe |
| Min | 32.5 | 19.0 | 2.0 | - | 3.0 | - | - | - | - | 8.0*C1.0 | - |
| Max | 35.0 | 21.0 | 3.0 | 2.0 | 4.0 | 1.0 | 0.1 | 0.0 | 0.0 | | Bal |
Alloy 20 Sulfuric Acid Performance
Mechanical Properties
• Ultimate tensile strength: 80 ksi
• Yield strength: 35 ksi
• Density: 0.292 lb/in.3
• Electrical Resistivity (RT) 651 ohm-cir mil/ft
• Elongation: 30%
Temperature
In addition to their corrosion resistance, Alloy 20 flanges also
perform well at moderately high temperatures, with the ability to
maintain their mechanical strength up to 1000°F.
Welding
Alloy 20 flanges are stabilized with Columbium to minimize carbide
precipitation during welding. In addition it offers intergranular
corrosion resistance in the as-welded condition.
2. Alloy 20 nickel alloy flange product description
| Product Name | Carbon steel / Stainless steel / Alloy Flanges |
| Standard | ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, JISB2220, API605,
EN1092 |
| Type | WN Flange, So Flange, LJ Flange, LWN Flange, SW Flange, Orifice
Flange, Reducing Flange, figure 8 blind (blank&Spacer)
Special Flange: According to the drawing Picture |
| Materials | Nickel Alloy: ASTM/ASME S/B366 UNS N08020, N04400, N06600, N06625,
N08800, N08810, N08825, N10276,N10665,N10675
Super Stainless Steel: ASTM/ASME S/A182 F44, F904L, F317L
Stainles steel: ASTM/ASME S/A182 F304, F304L, F304H, F316, F316L,
F321, F321H, F347H
Duplex Steel: ASTM A182 F51, F53, F55
Alloy Steel: ASTM/ASME S/ A182 F11, F12, F22, F5, F9, F91 Carbon Steel: ASTM/ASME S/A105, ASTM/ASME S/A350 LF2, ASTM/ASME
S/A694/A694M, F42, F52, F56, F60, F65, F70....ASTM/ASME S/A350 LF2,
ASTM/ASME S/A694/A694M, F42, F52, F56, F60, F65, F70.... |
| Dimension | (150#,300#,600#): DN15-DN1500
900# : DN15-DN1000
1500#: DN15-DN600
2500#:D N15-DN300 |
| Marking | Supply Logo + Standard + Size(mm) + HEAT NO +or as your requirement |
| Test | Chemical Component Analysis, Mechanical Properties, Metallurgical
Analysis, Impact Testing, Hardness testing , Ferrite Testing,
Intergranular corrosion testing, X-ray Inspection (RT), PMI, PT,
UT, HIC & SSC test, etc. or as your requirment |
| Brand | BoYue |
| Certificates | API, ISO, SGS, BV, CE, PED, KOC, CCRC, PDO, CH2M HILL and etc. |
| Advantages | 1. Abundant stock and prompt delivery 2. Reasonable for whole packages and processes.
3. 15 years' QC team service & sales management API& ASTM trained
engineers. 4. More than 150 customers spread worldwide. |
3. Alloy 20 nickel alloy flange application
• Power plants rely on alloy 20 flanges for flue-gas
desulfurization
• Alloy 20 flanges are used to connect heat exchangers, mixing
tanks, metal cleaning equipment, pickling tanks and racks, and
piping in mid-range corrosive chemcial processing environments.
• Alloy 20 flanges help solve corrosion issues in food and dye
production.
• Manufacturers of plastics and synthetic rubber also utilize alloy
20 fasteners.
4. Key Corrosion Resistant Features:
Alloy 20 flanges provide good performance in hot sulfuric acid,
specifically they offer good resistance to stress-corrosion
cracking in boiling sulfuric acid at specific range of 20% to 40%
concentration, as well as general sulfuric acid resistance. Alloy
20 offers solid acid protection and will perform better than Duplex
or even Monel, but for high temperature and high concentration
acids, you may need to look to Inconel or Hastelloy fasteners. In addition, Alloy 20 flanges also show
useful resistance to phosphoric acid and nitric acid.
- Good sulfuric acid protection at 20% - 40%
- Decent stress corrosion cracking, pitting and crevice corrosion
resistance in chloride
- Resonable general corrosion protection
- Good intergranular corrosion resistance in the as-welded condition
Product Attribute
| Place of Origin | China | Brand Name | BOYUE |
| Standard | ASME B16.5 | Type | Blind Flange |
| ModelNumber | Inconel Alloy 20 | Thickness | #150,#300,#600.#900 |
| Packing | Ply-Wood Cases | Payment | 30%TT+70% Balance |
Supply Ability:40000Pieces / per Month
Packaging & Delivery
Packaging Details:Generally plywooden case or following customer's
requirement.
Port:Shanghai/Tianjin
Product Description:
| Name | Forged Blind Flange |
| Standard | ANSI B16.5, ANSI B16.47 |
| Material Grade | Carbon Steel: A105N Stainless Steel:304,304L,316,316L,UNS31803Etc. Inconel alloy steel: 600, 625, 800, 825 |
| Outer Diameter | 1/2"-80", DN6-DN2400 |
| Pressure | CLASS 150LB -CLASS 3000LB |
| Technology | Forged flange |
| Surface | As customer request |
| Application | Pipeline and valves connection |
| MOQ | 1 piece |
| Productivity | 40000 Pieces/Month |
| Payment term | Any payment term is acceptable. |
| Packing | Wooden case or pallet packing. |
| Delivery | 5 days |
Why Choose Us
1.One-Stop Service,One Single Source.
2.No MOQ.
3.Best quality,competitive price
4.Fast Reply.
5.On-Time Delivery
6.Professional sales and technical team .
FAQ
Q1: Are you a factory or a trade company?
A1: We are a professional manufacturer for designing and producing
of Large-size products.(View Mor)
Q2: Do you make customized products or finished parts?
A2: All parts are custom made only, and in stock, we can produce
based on your drawings.
Q3: Will my drawing be e after you get it?
A3: Yes, we will not release your design to third party unless with
your permission.
Q4: What is the MOQ?
A4: Small order is acceptable, but the more, the cheaper.
Q5: How about the samples?
A5: We are happy to make prototype part or sample for clients to
ensure quality standard, but it’s charged according to your
drawing.
