Finished-Product Spot Check for UNS S20910 / XM-19 Austenitic Stainless Steel Rings
To support stable fit-up, repeatable performance, and full batch traceability, Octal Pipe completed a finished-product spot checkUNS S20910 / XM-19 (NITRONIC® 50). This inspection focused on dimensional accuracy, surface condition, material identification, and documentation matching-so the delivered rings can be verified efficiently during incoming inspection.
: UNS S20910 / XM-19 / NITRONIC® 50
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: ID 178 mm × OD 194 mm × Height 17 mm
: 17 mm
: Stainless (material consistency + traceability)
Spot-Check Scope (Finished Stage)
The spot check was executed around "drawing-critical dimensions + material consistency + shipment readiness":
: ID / OD / height (17 mm), plus ring geometry consistency
: batch-level verification aligned with ring markings / heat or batch reference
: product label, packing list, and key order details cross-checked for consistency
Material Highlights: Why UNS S20910 / XM-19 (NITRONIC® 50)
UNS S20910 (XM-19 / NITRONIC® 50) is widely selected when projects need , especially where dimensional stability and service reliability matter.
(often cited as significantly higher yield strength compared with 316-class materials, depending on condition)
in many media, commonly positioned as better than 316/316L and 317/317L in multiple environments
Non-magnetic tendency in cold work / low temperature contexts is frequently referenced for XM-19, supporting use cases where magnetic response is a concern
Anti-galling suitability is often highlighted for component-style applications where sliding contact can occur
During the spot check, the following were verified for "field-ready" acceptance flow:
: UNS S20910 / XM-19
: ID 178 × OD 194 × H 17 mm
What is UNS S20910 / XM-19 (NITRONIC® 50)?
It's a nitrogen-strengthened austenitic stainless steel commonly chosen for its strong balance of corrosion resistance and higher strength versus standard austenitic grades.
Why run a finished-product spot check on customized rings?
Because ring components are assembly-sensitive. Spot checks confirm the drawing-critical ID/OD/height and reduce mismatch risk during incoming inspection and fit-up.
ID 178 mm, OD 194 mm, and 17 mm height, including consistency across the ring geometry.
ISO 9001 Certificate
API Q1 Certificate
AP-5L Certificate
API-5CT Certificate
