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Most 60,000 psi connectors on the market use 17-4PH or Inconel, so when we tooled these in 316 stainless steel it wasn't for cost—it was for corrosion resistance across that -423°F to 1200°F range where cryogenic embrittlement cracks lesser alloys.
Working pressure holds at 60,000 psi (4136 bar) across all twelve models: 60G, 60C, 60P, 60U, 60RU, 60SU, 60BU, 60UT, 60UC, 60CA, and 60UE. The hex head design lets you torque without galling, which is a real issue above 40,000 psi with standerd gland-and-collar setups. Sizes run 1/4", 3/8", and 9/16" in any of the connection types—glands, collars, plugs, union couplings, reducing unions, slip-type, bulkhead, caps, elbows, tees, or crosses.
We skip the blended-edge finish many supliers use and leave a smooth machined surface that passes ASTM, ASME, and EN without extra paperwork. Actually, most buyers going into subsea or hydrogen service prefer this over the polished look because of that it doesn't trap chloride ions.
316 stainles steel handles the cryogenic side better than 304, but what it does is sacrifice some room-temperature tensile strength for impact toughness at -252°C. That trade-off matters if you're cycling between -423°F and 1200°F repeatedly—otherwise, you'll get micro-cracking in about 20-30 cycles with a 17-4PH fitting.
You order these by model number (say, 60U for union coupling) and choose hex head torque specs (we provide them on the COA, but our default is 180 ft-lbs for 9/16"). Lead time is typically 2 weeks or so, and we usually stock the 1/4" and 3/8" sizes—confirm stock on anything above that.
Every connector ships with a 1-year warranty and a full material traceability report that includes actual tensile and hardness values, not just mill certs. One detail buyers don't think to ask: the internal bore finish is 32 Ra or better, which matters for flow at 60,000 psi because surface irregularities create localized pressure spikes.
Our MOQ for these high-pressure connectors is 10 pieces per size and type. We can do smaller batches for custom orders, but that might affect pricing.
Standard sizes like 1/4", 3/8", and 9/16" usually ship within 2-3 weeks. Larger or custom orders may take 4-6 weeks depending on the configuration.
Yes, we can issue mill test reports and certificates of compliance for the 316 stainless steel material. Just let us know at the time of order.
Standard is smooth machined, but we can do a passivated or electropolished finish on request. Coatings aren't typical for this pressure range, but we can discuss if you need one.
Store them in a clean, dry area away from corrosive chemicals. Keep the original packaging or use sealed bags to prevent contamination—the stainless steel handles extreme temps fine, but storage conditions matter for long-term reliability.
