Bar

Our nickel alloy round bar is produced in strict accordance with ASME and ASTM international standards. Available in Inconel, Monel, Hastelloy and other nickel-based alloys, it features excellent corrosion resistance, high temperature stability and good mechanical properties. With uniform composition, dense structure and precise dimensional tolerance, the bar is suitable for forging, machining and manufacturing key components. Widely used in petrochemical, aerospace, power generation and marine engineering. Custom sizes, lengths and surface treatments are available to meet different industrial application requirements.

Core ASTM/ASME Standards

Primary Specifications

• ASTM B160 / ASME SB160
  • Pure Nickel (UNS N02200/N02201) Bars/Rods
• ASTM B164 / ASME SB164
  • Monel Alloys (UNS N04400/N05500) Bars/Rods
• ASTM B166 / ASME SB166
  • Inconel 600/601 (UNS N06600/N06601) Bars/Rods
• ASTM B446 / ASME SB446
  • Inconel 625 (UNS N06625) Bars/Rods
• ASTM B574 / ASME SB574
  • Hastelloy C276/C22 (UNS N10276/N06022) Bars/Rods
• ASTM B637 / ASME SB637
  • Precipitation-Hardening (Inconel 718, UNS N07718) Bars/Rods
• ASTM B473 / ASME SB473
  • Alloy 20 (UNS N08020) Bars/Rods
• ASTM B649 / ASME SB649
  • Incoloy 825/925 (UNS N08825/N09925) Bars/Rods

Supplementary Standards

• ASTM B899: General requirements for nickel alloy bars/forgings
• AMS 5665/5837: Aerospace material specifications

Common Nickel Alloy Grades (UNS)

• Pure Nickel: N02200 (Ni 200), N02201 (Ni 201)
• Monel: N04400 (Monel 400), N05500 (Monel K500)
• Inconel: N06600 (600), N06625 (625), N07718 (718)
• Incoloy: N08800 (800H), N08825 (825), N09925 (925)
• Hastelloy: N10276 (C276), N06022 (C22)
• Alloy 20: N08020 (Alloy 20/CB3)

Product Forms & Dimensions

1. Round Bars (Most Common)

• Hot-Rolled (HR):
  • Diameter: 8mm – 400mm (3/8" – 16")
  • Standard lengths: 2000mm, 3000mm, 6000mm
• Cold-Drawn (CD) / Cold-Finished (CF):
  • Diameter: 3mm – 100mm (1/8" – 4")
  • Precision tolerance: h8/h9
• Standard Diameters (mm):
  • 8, 10, 12, 16, 20, 25, 30, 40, 50, 60, 80, 100, 120, 150, 200

2. Square Bars

• Size: 4mm – 100mm (5/32" – 4")
• Length: 1000mm – 6000mm

3. Hexagonal Bars (Hex Bars)

• Size: 6mm – 100mm (1/4" – 4") across flats
• Length: 1000mm – 6000mm

4. Flat Bars

• Thickness: 2mm – 100mm
• Width: 10mm – 500mm
• Length: 1000mm – 6000mm

Surface Conditions

• Black (Hot-Rolled): As-rolled, oxide scale
• Bright (Cold-Drawn): Smooth, precision finish
• Polished: Mirror/buff polished (Ra ≤ 0.8μm)
• Peeled & Ground (PG): Precision turned, high tolerance

Production Processes

• Hot Rolling: Large diameters, high strength
• Cold Drawing: Small diameters, tight tolerance
• Forging: Large billets, custom shapes
• Centerless Grinding: Precision OD finish

Typical Applications

• Fasteners (bolts, studs, nuts)
• Valve components (stems, discs, shafts)
• Pump shafts & impellers
• Heat exchanger tubesheets & baffles
• Aerospace turbine parts
• High-temperature furnace components
• Corrosion-resistant shafts & rods

Selection Guide

• Round Bars: General purpose, machining, shafts
• Hex Bars: Faster machining, bolt blanks
• Cold-Drawn: Precision parts, close tolerance
• Hot-Rolled: Structural, high-temperature service
• Hastelloy C276: Severe corrosive environments
• Inconel 718: High-temperature, high-strength aerospace