Steel Round Bars, Rods & Wires

Steel Round Bars, Rods & Wires Manufacturer, Supplier & Exporter in India 

Amardeep Steel Centre LLP is a leading steel round bar manufacturer, steel rod manufacturer and steel wire manufacturer in India, stocking Stainless Steel, Carbon Steel, Alloy Steel, Duplex & Super Duplex, Nickel Alloy, Titanium, Tantalum and Zirconium round bars, rods and wires for immediate dispatch. As an established steel round bar supplier and exporter, we ship regularly to the Middle East, Africa, Europe, the Americas and South-East Asia.

Our round bars, rods and wires are supplied from 0.3 mm to 150 mm diameter in Annealed, Strain Hardened, Centreless Ground, Centreless Ground & Polished, Cold Drawn, Smooth Turned, Forged & Rough Turned, Buffed, 100% Ultrasonically Tested, Chamfered, and Hardened & Tempered conditions, to ASTM A276, A493, A322, ASME SB 162, SB 127, SB 168, B511 and B550. Explore our complete range of other products on our Products page, or send your grade and size via the Enquiry form for an instant quote. 

What Is a Steel Round Bar?

A steel round bar is a long, cylindrical steel stock with a solid circular cross-section, produced by hot rolling or cold drawing. Round bars are used across construction, engineering, and manufacturing wherever a uniform, high-strength structural or machinable section is required — from fasteners, shafts, and studs to machined components and forgings. Amardeep Steel Centre manufactures and supplies steel round bars in Stainless Steel, Carbon Steel, Alloy Steel, Duplex, Super Duplex, Nickel Alloy, and Titanium grades, in diameters from 5.5 mm to 500 mm and standard lengths of 3, 6, and 12 meters, or custom-cut lengths on request.

Specifications for Round Bars, Rods & Wires

What Is a Round Bar? Bar vs. Rod vs. Wire

A round bar is a solid, cylindrical length of metal stainless steel, carbon steel, alloy steel, or a nickel/titanium alloy supplied in fixed lengths for machining, forging or fabrication. The terms bar, rod and wire describe the same round cross-section at different diameters: bar generally refers to larger sizes (roughly 6 mm and above) used for machined components, shafts and structural members; rod usually describes mid-range diameters used as feedstock for further drawing or light machining; and wire is the finest round cross-section, typically cold-drawn to tight tolerance and supplied in coil or cut length for springs, fasteners, welding consumables and fine electrical/instrumentation parts. 

Round bars are used to manufacture shafts, gears, nuts and bolts, machine parts, oil-rig components, pump shafts, valve stems, structural pillars and fasteners. Because their properties can be tailored through heat treatment annealing, normalizing, quenching & tempering the same base grade can be supplied soft and ductile for bending/forming applications or hardened for wear-resistant machine parts.

Manufacturing Process for Round Bars

Our round bars, rods and wires are produced from ingots and continuous-cast billets and processed by one of three routes, chosen according to the diameter, tolerance and surface finish required:

• Hot Rolled Round Bars: hot-rolled directly from billet, offering the most economical route for larger diameters and general structural/fabrication use; typically supplied from 5 mm up to 250 mm dia.
• Forged Round Bars: open-die forged for larger sections and premium alloys where grain-flow integrity is critical (shafts, forged fasteners, pressure-retaining parts); available up to 500 mm dia and above on request.
• Cold Drawn / Bright Round Bars: cold drawn, centreless ground and polished for tight dimensional tolerance and a smooth machined finish; typically supplied up to 100-160 mm dia, ideal for free-machining and precision-turned components.

Bars are further heat treated as required by annealing, normalizing, stress relieving, quenching & tempering, or spheroidize annealing, and can be supplied peeled & reeled, centreless ground, cold drawn, proof machined or finish machined to your drawing, along with cut-to-length, multiple-length or full-length options.

Round Bar Size & Weight Chart 

Approximate theoretical weight per unit length for common round bar diameters in carbon/stainless steel (density ≈ 7,850 kg/m³), calculated using the standard formula Weight (kg/m) = 0.00616 × d² (d in mm). Use our online Steel Weight Calculator for an exact figure by grade and size.

For an exact figure by grade, run your size through our Steel Weight Calculator.

Dimensional Tolerances of Steel Round Bars 

Round bars are supplied to standard rolling/drawing tolerance classes (e.g. IS 1732, ASTM A484, EN 10060) covering diameter, ovality and straightness. As a general guide, tighter tolerance bands apply to smaller diameters and to cold-drawn/ground bars versus hot-rolled bars; exact tolerance class, straightness and out-of-round limits are confirmed against the applicable standard and drawing at the time of order — contact us with your grade, size and specification for the precise tolerance table.

Quality Control & Testing

Every batch of round bars, rods and wires is checked and reported on a Material Test Certificate before dispatch. Depending on grade and customer specification, testing can include:

• Surface inspection (visual and Magnetic Particle Inspection / Dye Penetrant Testing), end to end
• Positive Material Identification (PMI) using XRF to verify in-process chemistry of each bar
• 100% dimensional verification using calibrated verniers and Go/No-Go gauges
• Ultrasonic Testing (UT) for internal defects
• Mechanical property testing — tensile, hardness and impact testing across service temperature range
• Macro/micro-structure and grain-size analysis on request
• Third-party inspection and EN 10204 3.1/3.2 certification (BV, SGS, TUV, Lloyds)

Steel Round Bar, Rod & Wire Grades We Stock and Supply

Below is our complete material and grade-wise round bar range. Click through to any specific grade page for chemical composition, mechanical properties, sizes and pricing.

1. Stainless Steel Round Bars

Our Stainless Steel Bars, Rods & Wires (ASTM A276/A493) cover 0.3 mm to 150 mm dia across austenitic, martensitic and precipitation-hardening grades: 201, 202, 301, 302, 303, 304, 304H, 304L, 316, 316H, 316L, 309, 309S, 310, 310S, 316Ti, 317, 317L, 347, 321, 321H, 410, 416, 420, 430, 430F, 431, 440C, 630 and F51. Related individual grade pages:

• 17-4PH SS Bar (AMS 5659) | SS 420C Round/Square Bars
• SS 904L Round Bar/Rods | SS 329 Round Bars
• SS XM-19 Round Bars (S20910) | Nitronic 60 Round Bars | Nitronic 50 Round Bar
• 17-7 Stainless Steel Spring Wire | A286 Stainless Steel Wire (UNS S66286) | A286 Round Bar
• SMO 254 Round Bar | Alloy 20MO-6 Bar

2. Duplex & Super Duplex Steel Round Bars

Our Duplex Steel Bars, Rods & Wires (S31803, S32205) and Super Duplex Steel Bars, Rods & Wires offer high strength with superior chloride corrosion resistance. Specific grades: F53 Super Duplex SS Round Bar (S32750), F55 Super Duplex SS Round Bar and Super Duplex Ferralium 255 Round Bar.

3. Carbon & Alloy Steel Round Bars

Available as Carbon Steel Bars, Rods & Wires (1018, 1035, 1040, 1045, 1541, A572, A36, 1215) and Alloy Steel Bars, Rods & Wires (4130, 4140, 4150, 4340, 5160, 8620 per ASTM A322/A29). Specific grade pages: AISI 1018 Round Bar, AISI 1045 Round Bar, 4140 Round Bar, 4130 Round Bar, 1020 Round Bar, St-52 Round Bar and St35 Round Bar.

4. Tool & Die Steel Round Bars

High-speed and die steel round bars for tooling and dies: D2 Round Bar, D3 Tool Alloy Steel Round Bar, H-11 Round Bar, H12 Die Steel Round Bar, H13 Steel Round Bar, M2 High Speed Steel Round Bar, M35 High Speed Steel Round Bar, M42 Super High Speed Steel and AISI O2 Steel Round Bar.

5. Nickel Alloy, Monel, Inconel, Incoloy & Hastelloy Round Bars

Our Nickel Alloy Bars, Rods & Wires range (UNS 2200/2201, 4400, 8825, 6600/6601, 6625, 10276, 8020 per ASTM/ASME SB 162, 127, 168, 424, 443, 574, 462) includes:

• Monel Bars, Rods & Wires | Monel 400 Round Bar
• Inconel Bars, Rods & Wires – Inconel 600 Round Bar (UNS N06600), Inconel 625 Round Bar, Inconel 625 Round Bar (UNS N06625), Inconel 718 Round Bar, Inconel X-750 Round Bar
• Incoloy 800 Round Bar (UNS N08800) | Incoloy 825 Round Bar (NO8825) | Incoloy 925 Round Bar
• Hastelloy Bars, Rods & Wires
• Waspaloy Round Bar | Haynes 25 Round Bars | MP159 Round Bar | MP35N Nickel-Cobalt Alloy
• Custom 465 Round Bar | AISI S2 Round Bar | 35NCD16 Round Bar
• Invar 36 Round Bar | Invar 42 Round Bar | Alloy 20 Round Bar

6. Titanium, Tantalum, Zirconium & Niobium Round Bars

For aerospace and chemical-processing applications, we supply Titanium Bars, Rods & Wires (Grade 1 to 23), including Titanium Grade 5 Round Bar/Rod/Hex Bar, plus Tantalum Round Bar/Rod, Tantalum Wire, Zirconium 702 Bars, Rods & Wires and Niobium Wire.

7. Copper, Cupro-Nickel & Brass Round Bars, Wires

Our Cu-Ni Bars, Rods & Wires (90/10 & 70/30) sit alongside Brass Round Bars (IS 319 1989 Gr.1), ETP Copper Round Bars, Copper Bare Wire, Copper Enamelled Wire, Aluminium Bare Wire and Aluminium Enamel Wire, along with our general Aluminum Bars, Rods & Wires range.

8. Alloy 28 / Sanicro 28 Round Bars

Also available: Alloy 28 Bars, Rods & Wires and Sanicro 28 Bars, Rods & Wires, used in sulphuric and phosphoric acid environments.

Steel Round Bar Weight Calculation

Weight (kg/m) = D × D × 0.00616, where D is the diameter of the round bar in millimeters.

Example: a 50 mm diameter steel round bar weighs 50 × 50 × 0.00616 = 15.40 kg/m.

Applications & Industries of Round Bars 

Our steel round bars, rods and wires are supplied to Chemicals, Petrochemicals, Oil & Natural Gas, Fertilizers, Sugar Mills & Distilleries, Cement Industries, Ship Building, Paper Industries, Pumps, Automation, Paints and general Steel Industries, across the following applications:

• Oil & Gas: Downhole tooling, wellhead components and valve stems operate in sour, chloride-rich and high-pressure environments, so we supply corrosion-resistant Duplex, Super Duplex and Nickel Alloy round bars engineered for sour service and extreme temperature cycling.
• Power, Marine & Petrochemical: Pump shafts, turbine components, heat-exchanger hardware and marine fasteners rely on Stainless Steel, Monel and Cu-Ni round bars for their combination of strength and seawater/process-fluid corrosion resistance.
• Automotive, Construction & Fasteners: Carbon and Alloy Steel round bars (1018, 1045, 4130, 4140) are machined into shafts, gears, nuts, bolts and structural pillars for automotive, construction and general engineering use, while our Tool & Die Steel bars support press tooling and dies.
• Chemical & Pharmaceutical Processing:High-nickel alloys such as Inconel, Incoloy and Hastelloy round bars withstand aggressive acids and high-temperature process streams found in chemical plants and pharmaceutical process equipment.

Applications of Steel Round Bars

• Machined components, pump shafts, and fasteners
• Valves, machine tools, and studs/bolts
• Forgings, auto parts, and capital goods manufacturing
• Construction, structural, and engineering applications
• Oil & gas, petrochemical, and power-generation equipment

Export Destinations

We regularly export steel round bars, rods and wires to Kuwait, UAE, UK, Iran, Iraq, Qatar, Bahrain, Oman, Yemen, Lebanon, Jordan, Saudi Arabia, Malaysia, Indonesia, Singapore, Australia, New Zealand, USA, Canada, Mexico, Brazil, Netherlands, Germany, Italy, Spain, Poland, South Africa, Turkey, Egypt and Sri Lanka, among 60+ countries.

Why Choose Amardeep Steel Centre

• Large ready stock across all diameters (0.3 mm to 150 mm) and processing conditions for immediate dispatch
• One of the most reliable steel round bar suppliers and steel rod suppliers in India, with mill-traceable EN 10204 3.1/3.2 certification
• 100% Ultrasonic Testing available on request
• Regular steel round bar manufacturer in India exports to the Middle East, Africa, Europe, Americas & South-East Asia

Read more on our About Us page, view our Certificates, check our Clients, or use the Steel Weight Calculator to estimate your order.