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 vs 17-4 PH - Detailed Stainless Steel Comparison
Nitronic 60 vs 17-4 PH comparison for material selection. Both grades occupy the high-performance stainless / superalloy space; the choice depends on the controlling failure mode (galling vs corrosion vs strength) and the application service envelope. This page compares chemistry, mechanical properties, corrosion behavior, galling resistance per ASTM G98, cost, and the canonical use case for each grade. For Nitronic 60 specifications see UNS S21800; for the full Nitronic 60 portfolio see fasteners and bar.
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 vs 17-4 PH Side-by-Side
Nitronic 60 versus 17-4 PH pair-wise comparison:
| Property | Nitronic 60 | 17-4 PH |
|---|---|---|
| UNS | S21800 | S17400 |
| Yield (MPa) | 380 | 1100 |
| Galling resistance | Excellent | Moderate |
| PREN | 18 | 17 |
| Cost (relative to 316L) | 2x | 2x |
| Cryogenic stability | To -196 C | varies |
| Best use case | Anti-galling + austenitic non-magnetic matter | High-strength PH alloy with through-hardening |
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 stock for any application where 17-4 PH is the alternative, 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
When should I choose Nitronic 60 over 17-4 PH?
Choose Nitronic 60 when anti-galling + austenitic non-magnetic matter. The high-Mn-Si-N chemistry provides anti-galling at a stainless price point.
When should I choose 17-4 PH over Nitronic 60?
Choose 17-4 PH when high-strength ph alloy with through-hardening. Each grade has a distinct service envelope where it outperforms.
Are Nitronic 60 and 17-4 PH cross-substitutable in fasteners?
Sometimes, with engineering review. Different yield strengths, galling behavior, and corrosion envelopes change the joint design. Substitution requires confirming the controlling failure mode and re-running joint analysis.
Cost difference between Nitronic 60 and 17-4 PH?
Nitronic 60 is approximately 2x the cost of 316L. 17-4 PH is approximately 2x versus 316L. Compare on a total-life-cycle basis including disassembly, service life, and replacement frequency, not just unit cost.
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