VDM Alloys 22 Pipes

Supplier, Manufacturer, Distributor in India.

VDM Alloy 22 Pipes is a nickel-chromium-molybdenum alloy with tungsten and extremely low carbon and silicon content supplied, manufactured, and distributed by Sailesh Metal Corporation.

VDM Alloy 22 is characterized by:

  • Extraordinary resistance across a wide range of corrosive media under oxidizing and reducing conditions
  • Particularly high resistance to crevice, pitting, and stress corrosion

VDM Alloy 22 Pipes

Sailesh Metal Corporation VDM Alloy 22 Pipes

VDM Alloy 22 Pipes Supplier

Sailesh Metal Corporation VDM Alloy 22 Pipes Supplier

VDM Alloy 22 Pipes Distributor

Sailesh Metal Corporation VDM Alloy 22 Pipes Distributor

Chemical composition of VDM Alloy 22 Pipes

Element Weight %  
Ni balance
Cr 20.0 — 22.5
Mo 12.5 — 14.5
Fe 2.0 — 6.0
W 2.5 — 3.5
Co 2.5
Mn 0.5 max
V 0.35 max
Si 0.08 max
P 0.025 max
S 0.015 max
C 0.01 max

Physical properties of VDM Alloy 22 Pipes

Electrical resistivity [ ρel ] 1.14E-6 Ω·m at 20 °C
General information
Density [ ρ ]       8.70 g/cm³
Elastic modulus [ E ] 206.00 GPa at 20 °C
Elongation A50 [ A50 ] 45.00 %
Hardness, Brinell [ HB ] 240.00 [-]
Impact strength, Charpy notched [ Ivnot ] 1500 kJ/m²
Tensile strength [ Rm ] 690.00 MPa
Yield strength Rp0.2 [ Rp0.2 ] 310.00 MPa at 20 °C
Yield strength Rp1.0 [ Rp1.0 ] 290.00 MPa at 100 °C
Coefficient of thermal expansion [ α ] 1.24E-5 1/K at 100 °C
Melting point [ Tm ] 1355—1400 °C
Specific heat capacity [ cp ] 406.00 J/(kg·K) at 20 °C
Thermal conductivity [ λ ] 9.40 W/(m·K) at 20 °C

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.

Application areas of VDM Alloy 22 Pipes

Organic syntheses, flue gas desulphurization, electrolytic galvanizing, plate heat exchangers, fine chemicals production, incineration plants, pharmaceutical intermediates, combustion-resistant alloy for high-pressure oxygen applications.

Machinability of VDM Alloy 22 Pipes

Nicrofer 5621 hMoW should be machined in the solution-treated condition. As the alloy exhibits a high work-hardening rate only low cutting speeds should be used compared with low-alloyed standard austenitic stainless steels. Tools should be engaged at all times. An adequate depth of cut is important in order to cut below the previously formed work-hardened zone.

Corrosion properties of VDM Alloy 22 Pipes

The chemical composition of Nicrofer 5621 hMoW has been designed to give it outstanding corrosion resistance in as wide a range of media as possible, both oxidizing and reducing. The high chromium content of the alloy makes it particularly suitable for oxidizing conditions, including wet chlorine gas, hypochlorite solutions, or oxidizing acids. It is remarkably resistant to localized attack by halide ions, even under severe conditions of low pH and high temperatures. It resists attack in media contaminated by oxidizing chlorides such as ferric chloride or cupric chloride. Nicrofer 5621 hMoW is also resistant to many reducing media.