Specifications
Surface Treatments
Certifications
- ISO 9001 - 2015 Certified
- PED 2014/68/EC
- NACE MR0175/ISO 15156-2
- NORSOK M-650
- DFAR
- MERKBLATT AD 2000 W2/W7/W10
Nitronic 60 Tubing (UNS S21800) - Anti-Galling Stainless Tubing
Nitronic 60 tubing (UNS S21800) per ASTM A580 / A511 for instrumentation, small-bore process, and hydraulic service. Captures T2#43 'nitronic 60 pipe' (60 vol). Manufactured by drawn-over-mandrel or seamless processes. Differs from {L('seamless-pipe','seamless pipe')} in that tubing is sized by actual OD-and-wall-thickness rather than NPS schedule.
TorqBolt stocks Nitronic 60 (UNS S21800) at our Mumbai head office and Rajkot production plant. Each consignment ships with EN 10204 3.1 mill test certification by default and 3.2 dual-witnessed inspection (Lloyds, TUV, DNV, BV) on request. Contact info@torqbolt.com or +91-22-66157017 for sized stock and lead time.
Nitronic 60 Tubing Specifications
Seamless and drawn tubing in standard OD-and-wall combinations.
- Size range: OD 1/8 inch through 3 inch, wall 0.020 inch through 0.250 inch.
- Standards: ASTM A511 / A580 (related to A312 pipe).
- Seamless and drawn-over-mandrel processes available.
- Solution-annealed (S-A) standard; cold-worked HS on request.
- Surface finish: pickled-passivated standard; polished interior on request.
- Use cases: instrumentation tubing, small-bore process, hydraulic and pneumatic.
- Related forms: seamless pipe for NPS-sized larger-diameter applications, wire for solid-stock.
Chemistry — UNS S21800
Cr 16-18 / Mn 7-9 / Ni 8-9 / Si 3.5-4.5 / N 0.08-0.18 / C ≤0.10. See full element ranges with single and aggregate limits →
Mechanical Properties
Yield 55 ksi (380 MPa) min, tensile 95 ksi (655 MPa) min, elongation 35% min (annealed). Hardness Rockwell B95-95 typical. See full mechanical specification with bar / forging / wire conditions →
Galling Resistance
Nitronic 60 threshold stress 50,000 psi+ per ASTM G98 vs 304/316L at 4,000-6,000 psi — 5 to 10× better galling resistance. See full ASTM G98 data and galling failure mechanism →
Heat Treatment
Solution anneal only at 1900-1950°F followed by water quench. No precipitation hardening response. See full heat treatment specification →
Welding
Matching filler ER218 per AMS 5847. GTAW, GMAW, and SMAW all qualified. No PWHT required for typical thicknesses. See full welding procedure →
Material Selection
Nitronic 60 wins for anti-galling at high temperature where 304/316L gall. Stellite is harder but brittle. vs 316L · vs Nitronic 50 · austenitic context →
Nitronic 60 Applications by Industry
- Marine and offshore, anti-galling bolting and deck hardware.
- Oil and gas, subsea wellhead, NACE MR0175 sour service, christmas-tree fasteners.
- Nuclear, valve trim, pump shafts, reactor coolant bolting.
- Food processing, FDA-acceptable austenitic, sanitary fittings, mixer paddles.
- Cryogenic, LNG hardware, austenitic stability to -196 C.
- Pump and rotating equipment, shafts and bushings under sliding seal contact.
- Valve stems, gate / globe valve stems under pressure cycling.
- Anti-galling general applications, cross-industry summary.
Related Nitronic 60 Forms and Fasteners
- Bar: round bar, hex bar, square bar, flat bar.
- Plate, sheet, forgings: plate, sheet, forgings.
- Wire and tubing: wire, spring wire, tubing, seamless pipe.
- Bolts: hex bolts, stud bolts, anchor bolts, socket head cap screws.
- Nuts: hex nuts, heavy hex nuts, lock nuts, jam nuts.
- Pins and inserts: dowel pins, clevis pins, bushings, Helicoil thread inserts.
- Catalog: full Nitronic 60 fastener portfolio, anti-galling fasteners.
Request a Quote
For Nitronic 60 tubing in any size, Contact the TorqBolt QA-QC team at info@torqbolt.com or +91-22-66157017. We respond within 24 hours with sized stock availability, lead time, and EN 10204 3.1 / 3.2 MTC documentation samples.
Frequently Asked Questions
What sizes of tubing are stocked?
OD 1/8 inch through 3 inch, wall 0.020 inch through 0.250 inch. Custom larger sizes and special tolerances quoted on a 4 to 8 week lead time.
What standards govern tubing?
ASTM A511 / A580 (related to A312 pipe). Customer specifications may add explicit dimensional, surface, or test requirements.
Can tubing be supplied in cold-worked HS condition?
Yes. Solution-annealed (S-A) is standard. Cold-worked HS condition reaches 620 MPa yield and 30 HRC maximum hardness; specify on order.
What surface finishes are available?
Mill / pickled-passivated standard per ASTM A380. Polished, 2B mill, and 2D mill finishes available on request. Sanitary-finish (Ra 0.4 to 0.8 um) for food-processing service.
What certification ships with tubing?
EN 10204 3.1 mill test certification by default. EN 10204 3.2 dual-witnessed third-party (Lloyds, TUV, DNV, BV) on request.
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