Ask around for nickel round bar in India and Kalpataru Piping’s name comes up a lot — we’ve been supplying nickel alloy round bars, rods and wires in Nickel 200 and Nickel 201, made to ASTM B160 / ASME SB160, for long enough that we know exactly what oil & gas, chemical processing, petrochemical, and marine customers actually need from this material — strength that doesn’t fade, corrosion resistance that holds up, and consistent performance whether the bar sits at room temperature or gets pushed toward its limits. Round bar rarely travels alone, though. Most orders end up paired with pipes and tubes, flanges, buttweld fittings, or forged fittings from us, which saves clients the hassle of matching grades across different suppliers. Whatever size or finish a drawing calls for, we make it to that spec, test it for chemistry and mechanical properties before it leaves the shop floor, and send it out with the mill paperwork and pricing that make it easy to say yes — wherever in the world it’s headed.
What Are Nickel Alloy Round Bars & Wires?
Solid, wrought, and tough enough to shrug off a lot of what would corrode ordinary steel — that’s nickel alloy round bar in a sentence. Nickel 200 is the commercially pure grade most people reach for by default — good mechanical properties, solid resistance to a wide range of corrosive environments. Nickel 201 is essentially the same alloy with the carbon dialled down, which matters once temperatures climb past 315°C and you’d otherwise risk intergranular embrittlement eating away at the bar from the inside.
We manufacture both Nickel 200 (UNS N02200) and Nickel 201 (UNS N02201) as round, square, hex, rectangle, and wire mesh forms, built to whatever a client’s drawing specifies rather than off-the-shelf sizes only. This comes off the same production line as our broader nickel alloy products range — plates and sheets, wiremesh, fasteners — so the grade and paperwork line up across your whole order. And when a job needs to go further than nickel 200/201 can take it, our Monel and Inconel bars come off the same shop floor, tested the same way.
Table of Contents
What Is ASTM A53 Grade B Pipe?
ASTM A53 is a carbon steel pipe specification covering seamless and welded, black and hot-dip galvanized pipe, published jointly with ASME as SA53. Grade B is the higher-strength variant of the standard, produced in three manufacturing types:
- Type S (Seamless): Formed from a solid billet with no weld seam, offering the highest structural uniformity — ideal for high-pressure and critical service lines.
- Type E (Electric-Resistance Welded / ERW): Cold-formed steel strip welded longitudinally by electric resistance — a cost-effective option for medium-pressure use.
- Type F (Furnace-Welded / Continuous Welded): Produced by a continuous butt-weld process, generally limited to lower-pressure, non-critical applications.
Grade B specifically delivers a minimum tensile strength of 60,000 psi and yield strength of 35,000 psi — noticeably higher than Grade A — which is why it is the default choice for pressure piping, boiler lines, and structural steel work across refineries, power plants, and process industries. It is frequently specified alongside ASTM A106 Grade B pipe on the same project, and complements our low-temperature carbon steel A333 Grade 6 pipe range for cryogenic or sub-zero service lines.
Nickel Alloy Round Bars Technical Specifications
|
Specification |
Details |
|---|---|
|
Standards |
ASTM B160 / ASME SB160 |
|
Size Range |
15 NB to 150 NB (5 mm to 500 mm diameter, per client requirement) |
|
Length |
100 mm to 3000 mm and above |
|
Finish |
Bright, Polished, Black, Rough Turned, No.4 Finish, Matt Finish, BA Finish |
|
Form |
Round, Square, Hex (A/F), Bush, Rectangle, Flat, Wire Mesh |
|
Grade |
Nickel Alloy 200 (UNS N02200), Werkstoff Nr. 2.4066; Nickel Alloy 201 (UNS N02201), Werkstoff Nr. 2.4068 |
|
Tolerance |
H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per client requirement |
Equivalent Grades of Nickel 200 / 201 Round Bars, Rods & Wires
|
Standard |
UNS |
Werkstoff Nr. |
JIS |
AFNOR |
BS |
GOST |
EN |
|---|---|---|---|---|---|---|---|
|
Nickel 200 |
N02200 |
2.4066 |
NW 2200 |
N-100M |
NA 11 |
НП-2 |
Ni 99.2 |
|
Nickel 201 |
N02201 |
2.4068 |
NW 2201 |
N/A |
NA 12 |
НП-2 |
LC-Ni 99 |
| Specification | Details |
|---|---|
| Standards | ASTM B160 / ASME SB160 |
| Size Range | 15 NB to 150 NB (5 mm to 500 mm diameter, per client requirement) |
| Length | 100 mm to 3000 mm and above |
| Finish | Bright, Polished, Black, Rough Turned, No.4 Finish, Matt Finish, BA Finish |
| Form | Round, Square, Hex (A/F), Bush, Rectangle, Flat, Wire Mesh |
| Grade | Nickel Alloy 200 (UNS N02200), Werkstoff Nr. 2.4066; Nickel Alloy 201 (UNS N02201), Werkstoff Nr. 2.4068 |
| Tolerance | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per client requirement |
Chemical Composition — Nickel 200 / 201 Bars
|
Element |
Nickel 200 |
Nickel 201 |
|---|---|---|
|
Nickel + Cobalt (min) |
99.0% |
99.0% |
|
Carbon (max) |
0.15% |
0.02% |
|
Manganese (max) |
0.35% |
0.35% |
|
Iron (max) |
0.40% |
0.40% |
|
Silicon (max) |
0.35% |
0.35% |
|
Copper (max) |
0.25% |
0.25% |
|
Sulphur (max) |
0.010% |
0.010% |
Mechanical Properties (ASTM B160)
|
Property |
Nickel 200 (N02200) |
Nickel 201 (N02201) |
|---|---|---|
|
Tensile Strength (min) |
380 MPa (55 ksi) |
345 MPa (50 ksi) |
|
Yield Strength 0.2% offset (min) |
105 MPa (15 ksi) |
85 MPa (12 ksi) |
|
Elongation in 2 inch (min) |
35% |
40% |
|
Rockwell Hardness (max) |
B75 |
B65 |
| Element | Nickel 200 | Nickel 201 |
|---|---|---|
| Nickel + Cobalt (min) | 99.0% | 99.0% |
| Carbon (max) | 0.15% | 0.02% |
| Manganese (max) | 0.35% | 0.35% |
| Iron (max) | 0.40% | 0.40% |
| Silicon (max) | 0.35% | 0.35% |
| Copper (max) | 0.25% | 0.25% |
| Sulphur (max) | 0.010% | 0.010% |
Advantages of Nickel Alloy Round Bars, Rods & Wires
|
Advantage |
Why It Matters |
|---|---|
|
High Corrosion Resistance |
Withstands caustic, chlorinated, and saline environments better than steel |
|
High-Temperature Stability |
Retains strength and dimensional accuracy under thermal stress |
|
Excellent Conductivity |
Suited to electrical, electronic, and heat-exchanger applications |
|
Non-Magnetic Options |
Nickel alloy bars suit sensitive chemical and instrumentation applications |
|
Custom Manufacturing |
Sizes, finishes, and forms produced to exact client specification |
|
Export-Ready Documentation |
Mill certification and inspection support international projects |
Nickel 200 vs Nickel 201 Round Bar — Comparison
|
Characteristic |
Nickel 200 |
Nickel 201 |
|---|---|---|
|
Carbon Content (max) |
0.15% |
0.02% |
|
Max Service Temperature |
Up to 315°C |
Above 315°C |
|
Intergranular Embrittlement Risk |
Higher — avoid above 315°C |
Negligible at elevated temperatures |
|
Typical Applications |
Chemical processing, food equipment, ambient-temperature service |
Caustic soda service, aerospace, elevated-temperature reactor internals |
For applications running above 315°C, pair your round bar order with matching nickel alloy pipes and tubes in the Nickel 201 grade to keep material selection consistent across your project.
Nickel Alloy Round Bars Applications
- Chemical processing — resistance to caustic soda, hydrofluoric acid, and chlorine service
- Oil & gas — valve stems, pump shafts, and instrumentation components in sour gas environments
- Petrochemical plants — reactor internals and heat exchanger components requiring long-term corrosion resistance
- Aerospace & defence — electrical and electronic components demanding high conductivity and dimensional stability
- Food processing — compliance with food-grade purity requirements where contamination is critical
- Marine engineering — resistance to seawater corrosion in pump and valve trim applications
- Power generation — turbine and generator components requiring thermal stability
Our Quality Assurance Process
- Raw material sourced from reputed, certified mills with full traceability
- Custom manufacturing to client-specified size, form, and finish
- Flattening/flaring, PMI/IGC, macro/micro, hardness, and hydrostatic/radiography testing as applicable
- Mechanical and chemical property verification at each production stage
- Mill Test Certificates issued with every consignment, fully traceable to heat numbers
- Careful packing in carton boxes, shrink-wrap, or wooden crates/pallets to prevent transit damage
Certifications & Standards Compliance
- ISO 9001:2015 certified quality management system
- Manufactured and tested per ASTM B160 / ASME SB160
- Third-party inspection support available (SGS, BV, TÜV, Lloyd’s on request)
- Compliance with international export documentation requirements
FAQs – Nickel Alloy Round Bars
What is nickel alloy round bar used for?
Nickel alloy round bar is used wherever a combination of strength, corrosion resistance, and thermal or electrical conductivity is needed — including chemical processing, oil & gas, aerospace, marine, and power generation applications.
What is the difference between Nickel 200 and Nickel 201 round bar?
Nickel 200 has a higher carbon content suited to general service up to 315°C, while Nickel 201 has a lower carbon content designed for high-temperature applications above 315°C, avoiding intergranular embrittlement.
What standard covers nickel alloy round bars, rods, and wires?
Kalpataru Piping manufactures nickel alloy round bars, rods, and wires to ASTM B160 / ASME SB160 standards, with equivalent Werkstoff, UNS, JIS, AFNOR, BS, GOST, and EN grade references available on request.
What finishes and forms are available for nickel alloy round bar?
We supply nickel alloy round bars in bright, polished, black, rough turned, No.4, matt, and BA finishes, and in round, square, hex, bush, rectangle, flat, and wire mesh forms.
Do you supply Mill Test Certificates with nickel alloy bars?
Yes, every consignment of nickel alloy round bar, rod, or wire is supplied with full Mill Test Certificates traceable to heat numbers, and third-party inspection can be arranged on request.
Can Kalpataru Piping supply custom sizes and tolerances?
Yes, we manufacture custom sizes, lengths, and tolerances (H8–H13, K10–K12, or as specified) to match your exact project drawing or specification.
Do you export nickel alloy round bars, rods, and wires internationally?
Yes, Kalpataru Piping exports nickel alloy round bars, rods, and wires worldwide, with complete documentation, secure packing, and reliable shipping support for international buyers.
Get a Free Quote for Nickel Alloy Round Bars, Rods & Wires Today!
Looking for a dependable nickel alloy round bar, rod, or wire supplier in India? Kalpataru Piping delivers mill-certified material with custom sizing and fast global turnaround.
