Polishing Cold rolling EFW ASTM B474 UNS N02201 Alloy 201 pipe
1 Overview:
Commercially pure or low-alloy nickel has characteristics that are
useful in several fields, notably chemical processing and
electronics. Nickel is highly resistant to various reducing
chemicals and is unexcelled in resistance to caustic alkalies.
Compared with nickel alloys, commercially pure nickel has high
electrical and thermal conductivity. It also has a high Curie
temperature and good magnetostrictive properties. Annealed nickel
has a low hardness and good ductility and malleability. Those
attributes, combined with good weldability, make the metal highly
fabricable. Nickel has a relatively low work-hardening rate, but it
can be cold worked to moderately high strength levels while
maintaining ductility.
Nickel 200 (UNS N02200/W.Nr. 2.4060 & 2.4066) is commercially pure
(99.6%) wrought nickel. It has good mechanical properties and
excellent resistance to many corrosive environments. Other useful
features of the alloy are its magnetic and magnetostrictive
properties, high thermal and electrical conductivities, low gas
content and low vapor pressure. Chemical composition is shown in
Table 1. The corrosion resistance of Nickel 200 makes it
particularly useful for maintaining product purity in the handling
of foods, synthetic fibers, and caustic alkalies; and also in
structural applications where resistance to corrosion is a prime
consideration. Other applications include chemical shipping drums,
electrical and electronic parts, aerospace and missile components.
Commercially pure wrought Nickel with good mechanical properties
over a wide range of temperature and excellent resistance to many
corrosives, in particular hydroxides.
Application field:
Many different industries utilize Ni 200, but it is especially
useful to those who are looking to maintain the purity of their
products. This includes:
Food handling
Manufacturing synthetic fibers
Caustic alkalis
Structural application that demand corrosion resistance
Characteristics
Ni 200 can be hot rolled into practically any shape, and it also
responds well cold forming, and machining, as long as established
practices are followed. It is also accepts most conventional
welding, brazing, and soldering processes.
Chemical Requirements:
| Ni | C | Mn | Cu | S | Si | Fe |
| Max | | 0.15 | 0.35 | 0.25 | 0.01 | 0.35 | 0.4 |
| Min | 99 | | | | | | |
Mechanical Property Requirements:
| Ultimate Tensile | Yield Strength (0.2% OS) | Elong. | R/A | Hardness |
| Cold Worked |
| Min | 75 KSi | 50 KSi | 15 | | |
| Max | | | | | |
| Min | 515 MPa | 345 MPa | | | |
| Max | | | | | |
| Hot Worked |
| Min | 55 KSi | 15 KSi | 40 | | |
| Max | | | | | |
| Min | 380 MPa | 105 MPa | | | |
| Max | | | | | |
Specifications:
| Form | Standard |
| Metal Type | UNS N02200 |
| Bar | ASTM B160 Din 17752 BS 3076 |
| Wire | |
| Sheet | ASTM B162 Din 17750 BS 3072 |
| Plate | ASTM B162 Din 17750 BS 3072 |
| Tube | ASTM B622 ASTM B161 ASTM B163 Din 17740 BS 3074 |
| Pipe | ASTM B622 ASTM B161 Din 17740 BS 3074 |
| Fitting | ASTM B366 |
| Forging | ASTM B564 |
| Weld Wire | ERNi-CI |
| Weld Electrode | ENi-1 |
| NA 11 | All forms |
| Din | 2.4066 All forms |
2.Regular packaging for ASTM B474 UNS N02201 Alloy 201 pipe :
Woven:
Wooden:
3.Process for ASTM B474 UNS N02201 Alloy 201 pipe :
4.EFW pipe vs ERW pipe
EFW
pipe
Electric Fusion Welding (EFW steel pipe) refers to an electron beam
welding, the use of high-speed movement of the electron beam
directed impact kinetic energy is converted to heat the workpiece
so that the workpiece leaving the melt, the formation of the weld.
It is mainly used for welding dissimilar steel welding sheet or
which high power density, metal weldment can rapidly heated to high
temperatures, which can melt any refractory metals and alloys. Deep
penetration welding fast, heat-affected zone is extremely small, so
small performance impact on the joints, the joint almost no
distortion. But it has a requirement on a special welding room
because welding using X-rays.
ERW pipes means Electric Resistance Welded Pipes.
Electric Resistance Welding (ERW steel pipe): welding member
combination is applying pressure through the electrodes, the use of
current through the joint area of the contact surface and the
adjacent heat generating resistance welding process method, Also
known as contact welding. It has excellent toughness and dynamic
load strength, welding deformation.
Commonly used spot welding, seam welding and butt three.
