Stainless Steel Round / Square / Hex Bars

Altra Enterprise presents a high-quality range of SS Round, Square Hex Bars  – round, square, and hex – crafted for precision and versatility:

• Material Grades (UNS / AISI) FOR SS Round, Square Hex Bars

  • Common grades: 303, 304/304L, 316/316L – excellent corrosion resistance, machinability, and weldability

  • Specialty grades: 410, 420 (hardening); 17‑4PH, 2205/Duplex, 904L, Nitronic 50, 440C

  • Round bars: Ø 3 mm up to 100 mm+

  • Square bars: 4 mm to 100 mm

  • Hex bars: flats 5 mm–75 mm across Long lengths: up to 6 m standard; custom cutting available

•  Mechanical Condition / Finish

  • Cold-drawn bright bars, hot-rolled, polished, specializing in high precision (ISO h11 / ASTM A484) 📚 Standards & Certifications

  • ASTM A276, A479, A484; JIS, EN, UNS equivalents

  • Supplied with Mill Test Certificates (MTC) and optional 3rd-party inspection

• Applications

  • Round bars for shafts, fasteners, supports, marine fittings, food & pharma components

  • Square bars used in tool frames, machine parts, structural supports, furniture

  • Hex bars tailored for precision-machined fasteners, nuts, medical instruments, hydraulic parts, marine & aerospace uses

• Value‑Added Services

  • Straight-cutting, chamfering, surface polishing

  • Precision sawing, turning, end-grinding

  • Beveling, bar-coding, custom packaging, 3rd-party inspection

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