Nickel Alloy Round Bars Supplier, Stockist & Exporter in India
When industries demand materials that refuse to give up under extreme heat, aggressive chemicals, and relentless pressure, nickel alloy round bars are the answer every engineer reaches for. At Kalpataru Piping, we have spent years building one of India’s most reliable inventories of nickel alloy round bars and wires – sourced from certified mills, tested in-house, and shipped to clients across 50+ countries. Whether you need a single bar for a maintenance job or a full project lot for an offshore platform, we have the grades, the dimensions, and the documentation ready.
Our nickel alloy round bars conform to ASTM B160 / ASME SB160 standards and cover the complete range of commercially important alloys: Nickel 200, Nickel 201, Monel 400, Inconel 625, Inconel 600, Inconel 718, Hastelloy C276, and Incoloy 825. Diameters run from 3 mm to 800 mm, and every bar leaves our facility with a full material test report, heat certificate, and third-party inspection clearance. If you are looking for a nickel alloy round bars manufacturers and supplier in India who treats deadlines as seriously as quality, you have found the right partner.
Table of Contents
What Are Nickel Alloy Round Bars?
Nickel alloy round bars are cylindrical solid bars manufactured primarily from nickel and its alloys, engineered to perform in environments where standard stainless steel or carbon steel simply cannot hold up. The combination of nickel with elements like copper, chromium, molybdenum, and iron produces alloys with outstanding corrosion resistance, high-temperature strength, and remarkable toughness across a wide cryogenic-to-elevated temperature range.
These bars serve as the raw stock for machined components, fasteners, flanges, valve bodies, pump shafts, and structural elements across the oil & gas, chemical processing, power generation, marine, and aerospace industries. They are available in multiple bar forms to match every engineering need:
- Round Bars – most versatile; used for machined parts, shafts, and general structural applications
- Hex Bars – ideal for fastener stock; no secondary material removal needed
- Square Bars – used in tool and die, moulding, and keyway applications
- Hollow Bars – reduces material cost and machining time for bore-through components
- Bright Bars – cold-drawn with tight tolerances for precision-machined parts
- Forged Bars – for applications requiring superior grain structure and mechanical properties
At Kalpataru Piping, all these forms are stocked in our Mumbai warehouse and can be custom-cut to length or machined to your drawing. Our nickel alloy pipes and tubes and nickel alloy flanges complement these bars as a complete supply solution.
- Specifications
- Grades
- Size & Weight Charts
- Surface Finish & Condition Options
- Applications & Industries
- Comparison
Nickel Alloy Round Bars Specifications
All Kalpataru Piping nickel alloy round bars conform to internationally recognised standards. The table below covers the full specification range we supply.
|
Parameter |
Details |
|---|---|
|
Standard |
ASTM B160 / ASME SB160 |
|
Dimensions |
EN, DIN, JIS, ASTM, BS, AISI |
|
Round Bar Diameter |
3 mm – 800 mm |
|
Hex Bar Size |
2 mm – 100 mm A/F |
|
Square Bar Size |
4 mm – 100 mm |
|
Angle Bar Size |
3×20 mm to 100×100 mm |
|
Rectangular Bar Thickness |
3.0 mm – 12.0 mm |
|
Channel Bar |
60×40 mm to 150×75 mm; 5.0 – 6.0 mm thickness |
|
Hollow Bar OD |
32 mm OD × 16 mm ID to 250 mm OD × 200 mm ID |
|
Threaded Bar Billet Size |
1/2” – 495 mm diameter |
|
Rectangular Size |
33×30 mm to 295×1065 mm |
|
Bar Cutting Length |
Up to 650 mm |
|
Finish |
Cold drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, rough turned, bright, polished, grinding, hairline |
|
Tolerance |
H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per client requirement |
|
Surface |
Bright, hot rolled pickled, cold drawn, sand blasting, polished, hairline |
|
Condition |
Hardened & tempered, annealed |
|
Technique |
Hot rolled, cold drawn, cold rolled, forged round bar, rod |
|
Form |
Round, rod, T-bar, channel bar, precision ground bar, square, blocks, rings, hollow, triangle, rectangle, hex (A/F), threaded, half round bar, profiles, billet, ingot, I/H bar, forging |
|
Quality Compliance |
NACE MR0175 / ISO 15156 |
|
Packaging |
Hexagonal bundles, wooden boxes, steel/wooden crates, custom packaging per order |
Nickel Alloy Grades We Supply
Kalpataru Piping stocks round bars in every commercially significant nickel alloy grade. The table below lists the UNS number, governing standard, and the primary reason each grade is chosen by design engineers.
|
Grade |
UNS No. |
Standard |
Key Characteristics |
Internal Link |
|---|---|---|---|---|
|
Nickel 200 |
N02200 |
ASTM B160 |
Commercially pure nickel; excellent corrosion resistance in reducing environments; good electrical conductivity |
|
|
Nickel 201 |
N02201 |
ASTM B160 |
Low-carbon version of Nickel 200; preferred above 315°C; resists caustic embrittlement |
|
|
Monel 400 |
N04400 |
ASTM B164 |
Ni-Cu alloy; exceptional resistance to seawater, HF acid, and chloride environments |
|
|
Monel K-500 |
N05500 |
ASTM B865 |
Age-hardenable Monel; 3× the strength of Monel 400; used for pump shafts and impellers |
|
|
Inconel 600 |
N06600 |
ASTM B166 |
Ni-Cr alloy; resists oxidation and carburisation at high temperatures |
|
|
Inconel 625 |
N06625 |
ASTM B446 |
Ni-Cr-Mo; outstanding fatigue and creep-rupture strength; widely used offshore |
|
|
Inconel 718 |
N07718 |
ASTM B637 |
Precipitation-hardened; highest strength of the Inconel family; used in aerospace |
|
|
Hastelloy C276 |
N10276 |
ASTM B574 |
Ni-Mo-Cr; broadest corrosion resistance of any nickel alloy; resists pitting, crevice, and SCC |
|
|
Incoloy 825 |
N08825 |
ASTM B425 |
Ni-Fe-Cr-Mo-Cu; designed for sulphuric and phosphoric acid service |
|
|
Alloy 20 (Carpenter 20) |
N08020 |
ASTM B473 |
Fe-Ni-Cr-Mo-Cu; designed for sulphuric acid environments |
Nickel Alloy Round Bars Size & Weight Charts
Round Bar Weight Chart (Diameter vs. Weight)
| Diameter (inch) | Diameter (mm) | Weight (lbs/ft) | Weight (kg/m) |
|---|---|---|---|
| 1/4 | 6.35 | 0.167 | 0.2484 |
| 1/2 | 12.7 | 0.668 | 0.9939 |
| 3/4 | 19.05 | 1.502 | 2.2349 |
| 1 | 25.4 | 2.671 | 3.9744 |
| 1-1/4 | 31.75 | 4.173 | 6.2094 |
| 1-1/2 | 38.1 | 6.009 | 8.9387 |
| 2 | 50.8 | 10.68 | 15.889 |
| 2-1/2 | 63.5 | 16.69 | 24.826 |
| 3 | 76.2 | 24.03 | 35.748 |
| 4 | 101.6 | 42.72 | 63.554 |
Round Bar Weight Chart (Diameter vs. Weight)
| Diameter (inch) | Diameter (mm) | Weight (lbs/ft) | Weight (kg/m) |
|---|---|---|---|
| 1/4 | 6.35 | 0.167 | 0.2484 |
| 1/2 | 12.7 | 0.668 | 0.9939 |
| 3/4 | 19.05 | 1.502 | 2.2349 |
| 1 | 25.4 | 2.671 | 3.9744 |
| 1-1/4 | 31.75 | 4.173 | 6.2094 |
| 1-1/2 | 38.1 | 6.009 | 8.9387 |
| 2 | 50.8 | 10.68 | 15.889 |
| 2-1/2 | 63.5 | 16.69 | 24.826 |
| 3 | 76.2 | 24.03 | 35.748 |
| 4 | 101.6 | 42.72 | 63.554 |
Nickel Alloy Hex Bar Size & Weight Chart
| Size (mm) | Weight (kg/m) | Size (mm) | Weight (kg/m) | Size (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| 7 × 7 | 0.337 | 20 × 20 | 2.747 | 40 × 40 | 10.988 |
| 10 × 10 | 0.687 | 25 × 25 | 4.292 | 50 × 50 | 17.168 |
| 12 × 12 | 0.989 | 30 × 30 | 6.181 | 60 × 60 | 24.723 |
| 14 × 14 | 1.346 | 32 × 32 | 7.032 | 65 × 65 | 29.015 |
| 16 × 16 | 1.758 | 36 × 36 | 8.9 | 70 × 70 | 33.65 |
| 19 × 19 | 2.479 | 38 × 38 | 9.916 | 75 × 75 | 38.629 |
Nickel Alloy Square Bar Size & Weight Chart
| Size (mm) | Weight (kg/ft) | Weight (kg/m) |
|---|---|---|
| 10 × 10 | 0.020 | 0.080 |
| 12 × 12 | 0.030 | 1.010 |
| 16 × 16 | 0.060 | 2.000 |
| 20 × 20 | 1.000 | 3.014 |
| 25 × 25 | 1.050 | 4.090 |
| 32 × 32 | 2.040 | 8.000 |
| 40 × 40 | 3.080 | 12.060 |
| 50 × 50 | 6.000 | 19.060 |
| 63 × 63 | 9.050 | 31.020 |
Nickel Alloy Hollow Bar Size Chart (Sample)
| OD (mm) | ID (mm) | Max OD (mm) | Min ID (mm) |
|---|---|---|---|
| 32 | 20 | 31 | 21.9 |
| 36 | 25 | 35 | 26.9 |
| 40 | 28 | 39 | 29.9 |
| 50 | 36 | 49 | 38 |
| 63 | 50 | 62 | 51.9 |
| 80 | 63 | 78.6 | 65 |
| 100 | 80 | 98.5 | 82.3 |
Need a size not listed? Contact Kalpataru Piping for custom bar cutting and machining services.
Surface Finish & Condition Options
Every nickel alloy round bar from Kalpataru Piping is available in your specified finish. The code abbreviations below match those used on our mill test certificates.
|
Code |
Full Name |
Best Used For |
|---|---|---|
|
CD |
Cold Drawn |
Tight dimensional tolerance; smooth surface for machined parts |
|
BD |
Bright Drawn |
Superior surface quality; closely controlled dimensions |
|
CG |
Centreless Ground |
Precision OD grinding; used for shafts and precision sliding fits |
|
CF |
Cold Finished |
General cold-worked surface with improved mechanical properties |
|
P |
Polished |
Aesthetic or cleanroom requirements; reduces contamination risk |
|
SRE |
Slit Rolled Edge |
Bar cut from coil/sheet; economical option for less critical applications |
|
HF |
Hot Finished |
Scale surface; economical; used where machining allowance is acceptable |
|
HRAP |
Hot Rolled Annealed & Pickled |
Descaled; softest condition for forming; weldable |
|
P&T |
Peeled & Turned |
Removes surface defects; improved surface integrity |
|
RT |
Rough Turned / Peeled |
Moderate surface quality; intermediate machining allowance |
|
ST |
Smooth Turned |
Good surface finish; less tight than CG |
|
PR |
Peeled & Reeled |
Coil stock peeled; consistent OD for seamless tube production |
Nickel Alloy Round Bars Applications & Industries
Nickel alloy round bars are the material of choice when the environment is too aggressive for ordinary metals. The table below maps each major industry to the alloys it most commonly specifies, and why.
|
Industry |
Typical Application |
Preferred Grade(s) |
|---|---|---|
|
Oil & Gas / Offshore |
Pump shafts, valve stems, downhole tool components, subsea connectors |
Inconel 625, Monel 400, Monel K-500 |
|
Chemical Processing |
Reactor stirrers, heat exchanger tube sheets, agitator shafts, scrubber internals |
Hastelloy C276, Incoloy 825, Alloy 20 |
|
Power Generation |
Turbine blades, boiler feed pump shafts, high-temperature fasteners, condensers |
Inconel 718, Incoloy 825, Nickel 200 |
|
Marine & Shipbuilding |
Propeller shafts, seawater pump components, deck fittings, hull fastenings |
Monel 400, Monel K-500, Copper-Nickel |
|
Aerospace & Defence |
Jet engine components, airframe fasteners, landing gear parts, actuator rods |
Inconel 718, Inconel 625 |
|
Pharmaceuticals |
Mixing vessel shafts, sanitary fittings, product-contact machined parts |
Hastelloy C276, Inconel 625 |
|
Nuclear Power |
Reactor internals, control rod mechanisms, pressure boundary components |
Inconel 600, Nickel 200, Inconel 718 |
|
Food & Beverage |
Agitator shafts, pump shafts, valve bodies in high-hygiene processing |
Monel 400, Nickel 200 |
|
Pulp & Paper |
Bleach plant hardware, digester components, caustic handling equipment |
Hastelloy C276, Incoloy 825 |
|
Electronics |
Precision machined contacts, connectors, spring elements |
Nickel 200, Nickel 201 |
Looking for related products? Explore our nickel alloy flanges, nickel alloy fasteners, and nickel alloy pipe spools for a complete piping system solution.
Nickel Alloy vs Stainless Steel vs Carbon Steel Round Bars – Comparison
Choosing the right bar material is the first engineering decision. This table gives you a direct comparison across the properties that matter most in demanding applications.
|
Property |
Nickel Alloy Round Bars |
Stainless Steel Round Bars |
Carbon Steel Round Bars |
|---|---|---|---|
|
Max Service Temperature |
Up to 1200°C (grade-dependent) |
Up to 870°C (310S) |
Up to 400°C |
|
Corrosion Resistance |
Excellent – resists acids, alkalis, seawater, chlorides |
Good – passive film; vulnerable to chloride SCC |
Poor – requires coating or galvanising |
|
Strength at High Temperature |
Maintains strength to >700°C |
Drops significantly above 600°C |
Severe loss above 350°C |
|
Resistance to Chloride SCC |
Excellent (Monel, Hastelloy) |
Susceptible (especially 304 / 316) |
Not susceptible but corrodes |
|
Magnetic Properties |
Mostly non-magnetic (austenitic) |
Mostly non-magnetic (austenitic grades) |
Magnetic |
|
Machinability |
Moderate – work-hardens; needs sharp tooling |
Good |
Excellent |
|
Weldability |
Good with matching filler |
Excellent |
Good |
|
Cost |
High |
Moderate |
Low |
|
Best Used When |
Extreme temperature, corrosion, or pressure |
Moderate corrosion in benign environments |
Structural, ambient-temperature service |
For applications where stainless steel has proved insufficient, nickel alloys are the proven next step. Speak to our technical team to confirm the right grade for your conditions.
Quality Control, Testing & Certifications
At Kalpataru Piping, quality is not a marketing promise — it is a documented process. Every batch of nickel alloy round bars passes through a structured quality gate before it is cleared for dispatch.
Testing We Perform In-House & Through Third-Party Labs
|
Test Type |
Purpose |
|---|---|
|
Chemical Composition Analysis (PMI) |
Confirms alloy grade and element percentages against ASTM/ASME limits |
|
Mechanical Property Testing |
Tensile strength, yield strength, elongation %, hardness (Brinell / Vickers / Rockwell) |
|
Ultrasonic Testing (UT) |
Detects internal flaws, laminations, and voids |
|
Radiography (RT) |
Visual verification of internal integrity |
|
Pitting & Crevice Corrosion Test |
Confirms suitability for chloride and acid environments |
|
Intergranular Corrosion Test (IGC) |
Detects sensitisation in welded or heat-treated bars |
|
Hardness Testing (HT) |
Ensures heat treatment compliance |
|
Hydrostatic Testing |
For hollow and tubular bar forms |
|
Third-Party Visual Inspection |
Independent verification before shipment |
Certifications & Standards Compliance
- ISO 9001:2015 – Quality Management System
- EN 10204 Type 3.1 / 3.2 – Mill Test Reports
- NACE MR0175 / ISO 15156 – Sour service compliance
- PED 2014/68/EU – Pressure Equipment Directive (for European projects)
- AD 2000 Merkblatt W2 – German pressure vessel code
- ASTM / ASME – All applicable bar standards (B160, B164, B166, B446, B574, B637)
We work with globally recognised third-party inspection agencies including SGS, Bureau Veritas, Lloyd’s Register, TUV, and Intertek to provide independent assurance on critical orders.
Nickel Alloy Round Bars Price List in India
|
Nickel alloy grade |
Approx. price per kg |
|
Nickel 200 / 201 |
₹1,500–₹3,500 |
|
Inconel 600 |
₹1,500–₹2,800 |
|
Inconel 625 |
₹2,000–₹3,500+ |
|
Inconel 718 |
₹2,500–₹4,000+ |
|
Monel 400 |
₹1,300–₹2,400 |
|
Monel K-500 |
₹1,500–₹2,700 |
|
Hastelloy C-276 |
₹1,800–₹3,200 |
|
Hastelloy C-22 |
₹2,200–₹3,000 |
Price ranges are indicative estimates for budgeting, compiled from published supplier listings and grade-specific quotations. Actual October 2026 prices may differ. GST, freight, cutting and testing charges may be extra.
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.
