VDM Alloys 276 Flanges
Suppliers, Manufacturers & Distributors in India
VDM Alloy 276 Flanges is a nickel-chrome-molybdenum alloy with tungsten supplied, distributed & manufactured by Sailesh Metal Corporation.
It is characterized by:
- Extraordinary resistance across a wide range of corrosive, watery media; in particular oxidizing and reducing acids
- Particularly high resistance against chloride-induced crevice, pitting, and stress corrosion
Designations and standards
| Standard | Material designation | ||
| EN | 2.4819 – NiMo16Cr15W | ||
| ISO | NiMo16Cr15Fe6W4 | ||
| UNS | N10276 | ||
| AFNOR | NC17D |
VDM Alloy 276 Flanges
VDM Alloy 276 Flanges Supplier
VDM Alloy 276 Flanges Distributor
Mechanical properties of VDM Alloy 276 Flanges
The following minimum values at room and increased temperatures apply to the solution-annealed condition for longitudinal and traverse test samples of the specified dimensions.
| Temperature | Yield strength Rp 0.2 | Tensile strength Rm | ||||||||
| °C | °F | MPa | ksi | MPa | ksi | |||||
| 20 | 68 | 310 | 45.0 | 700 | 101.5 | |||||
| 100 | 212 | 280 | 40.6 | 660 | 95.7 | |||||
| 200 | 392 | 240 | 34.8 | 630 | 91.4 | |||||
| 300 | 572 | 220 | 31.9 | 600 | 87.0 | |||||
| 400 | 752 | 195 | 28.3 | 570 | 82.7 | |||||
| 450 | 842 | 150 | 21.8 | 530 | 76.9 |
| Product form | Dimensions | Yield strength Rp 0.2 | Tensile strength Rm | Elongation A | Brinell hardness HB | |||||||||||
| mm | in | MPa | ksi | MPa | ksi | % | ||||||||||
| Sheet | ≤ 5 | 0.20 | ≥ 310 | ≥ 45.0 | ≥ 730 | ≥ 105.9 | ≥ 30 | ≤ 240 | ||||||||
| Sheet | 5-25 | 0.20-0.98 | ≥ 280 | ≥ 40.6 | ≥ 700 | ≥ 101.5 | ≥ 25 | ≤ 240 | ||||||||
| Strip | 0.1-3 | 0.004-0.12 | ≥ 310 | ≥ 45.0 | ≥ 730 | ≥ 105.9 | ≥ 30 | ≤ 240 | ||||||||
| Rod, bar | ≤ 100 | ≤ 3.94 | ≥ 280 | ≥ 40.6 | ≥ 730 | ≥ 105.9 | ≥ 30 | ≤ 240 | ||||||||
Physical properties of VDM Alloy 276 Flanges
| Density | Melting range | Relative magnetic permeability at 20 °C (68 °F) | |||
| 8.9 g/cm3 (0.32 lb/in3) at 20 °C (68 °F) | 1,325-1,370 °C (2,417-2,498 °F) | 1,001 (Maximum) |
| Temperature | Specific heat capacity | Thermal conductivity | Electrical resistivity | Modulus of elasticity | Coefficient of thermal expansion | ||||||||||||||
|
°C |
°F |
J
Kg · K |
Btu lb ∙ °F | W
m ∙ K |
Btu ∙ in
sq. ft ∙ h ∙ °F |
μΩ · cm |
GPa |
103 ksi |
10-6
K |
10-6
°F |
|||||||||
| 20 | 68 | 426 | 0.102 | 10.2 | 70.8 | 125 | 208 | 30.2 | 12.1 | 6.72 | |||||||||
| 100 | 212 | 438 | 0.105 | 11.6 | 80.5 | 127 | 204 | 29.6 | 12.4 | 6.89 | |||||||||
| 200 | 392 | 453 | 0.108 | 13.4 | 93.0 | 128.5 | 200 | 29.0 | 12.8 | 7.11 | |||||||||
| 300 | 572 | 469 | 0.112 | 15.1 | 104.8 | 129 | 195 | 28.3 | 13.1 | 7.28 | |||||||||
| 400 | 762 | 483 | 0.115 | 16.7 | 115.9 | 129.5 | 188 | 27.3 | 13.4 | 7.44 | |||||||||
| 500 | 932 | 493 | 0.118 | 18.1 | 125.6 | 129 | 182 | 26.4 | 13.4 | 7.44 | |||||||||
| 600 | 1,112 | 515 | 0.123 | 20.2 | 140.1 | 128.5 | 175 | 25.4 | 13.5 | 7.50 | |||||||||
| 700 | 1,292 | 609 | 0.145 | 25.7 | 178.3 | 128 | 168 | 24.4 | 14.0 | 7.78 | |||||||||
| 800 | 1,472 | 605 | 0.145 | 25.8 | 179.0 | 126.5 | 160 | 23.2 | 14.6 | 8.11 | |||||||||
| 900 | 1,652 | 609 | 0.145 | 25.9 | 179.7 | 126 | 151 | 21.9 | 15.1 | 8.39 | |||||||||
| 1,000 | 1,832 | 605 | 0.145 | 27.2 | 188.7 | 125.5 | 143 | 20.7 | 15.6 | 8.67 | |||||||||
Microstructural properties
VDM Alloy 276 has a cubic, face-centered microstructure. In the temperature range of 600 to 1,100 °C (1,112 to 2,012 °F), intermetallic phases can form during longer exposure times or when cooling is too slow. In addition, carbides can dissipate on the grain boundaries, which reduces resistance against inter-crystalline corrosion.
Chemical composition
| Ni | Cr | Fe | C | Mn | Si | W | Mo | Co | V | P | S | |||||||||||||
| Min. | 51 | 15 | 4 | 3 | 15 | |||||||||||||||||||
| Max. | 63 | 16.5 | 7 | 0.01 | 1 | 0.08 | 4.5 | 17 | 2.5 | 0.3 | 0.02 | 0.01 | ||||||||||||
Corrosion resistance
VDM Alloy 276 Flanges can be used in many chemical processes with both oxidizing as well as reducing media. The high chrome and molybdenum concentrations make the alloy resistant to chloride-ion attacks. The tungsten content further increases this resistance. VDM Alloy C 276 is one of the few materials that are resistant against chlorine gas, hypo- chlorite, and chlorine dioxide solutions. The alloy is characterized by excellent resistance against concentrated solutions of oxidizing salts.
| Alloy | KPT in °C (°F) | CCT in °C (°F) | ||
| VDM Alloy 276 | 115-120 (239-248) | 105 (221) |
Fields of application
VDM Alloy 276 Flanges has a broad field of application in the chemicals and petrochemicals industry, for components in organic processes containing chlorides, and for catalytic systems. The material can be used especially in cases where hot, contaminated mineral acids, solutions or organic acids (such as formic acid and acetic acid) and sea water occur.
Examples of fields of application:
Paper and pulp industry, e.g. for digestion and bleaching tanks
Washers, agitators and wet ventilators in flue gas desulfurization systems
Equipment and components for acid gas applications
Reactors for acetic acid production
Sulfuric acid coolers
Methylene diphenyl isocyanate (MDI)