Cast super duplex (the cast equivalent of wrought UNS S32760 / Zeron 100) is supplied by TorqBolt from qualified foundries. The cast version carries UNS J93380 with chemistry matching wrought S32760; the ASTM spec is A890 Grade 1B (general castings) and A995 Grade 6A (pressure-containing castings). We do not pour castings ourselves, we source from NORSOK M-650 qualified foundries and ship with EN 10204 type 3.1 or 3.2 certificates plus pattern records and machining drawings. Note: cast super duplex requires careful solution annealing + radiographic inspection because casting porosity and sigma-phase risk are higher than wrought.
Cast equivalent of wrought UNS S32760 . Supplied by TorqBolt from qualified foundries . Pump bodies + valve bodies + impellers + large complex shapes . NORSOK M-650 + NACE MR0175 traceable
ASTM A890 Grade 1B (UNS J93380) for general-purpose super duplex castings. ASTM A995 Grade 6A for pressure-containing castings used in valve bodies, pump bodies, and pressure-vessel parts. EN 10283 for European castings. NORSOK M-630 MDS 055 acceptance. NACE MR0175 / ISO 15156-3 sour-service hardness cap. API 6A PSL3 / 17D / 20E BSL-3 for oil-and-gas valve bodies.
| Attribute | Cast (J93380, A890 1B / A995 6A) | Forged (S32760, A182 F55) |
|---|---|---|
| Chemistry | Matches wrought S32760 (Cr 24-26, Ni 6-8, Mo 3-4, Cu 0.5-1, W 0.5-1, N 0.2-0.3) | Same composition envelope |
| Microstructure | Dendritic, requires solution anneal + rapid quench | Wrought, finer grain after forge + SA |
| Yield strength | ≥ 450 MPa (A890 1B) | ≥ 550 MPa (A182 F55) |
| Sigma-phase risk | Higher (thicker sections, slower cooldown) | Lower (forging cycle + post-forge SA) |
| Typical service | Complex shapes (pump body, valve body, impeller) | Flanges, fittings, fasteners, shafts |
| NDT required | RT + UT + MT mandatory | UT + MT (RT for thick sections only) |
Send the spec (component drawing + ASME class + size + weight + project standard + supplementary requirements + quantity + destination port) to info@torqbolt.com or +91-22-66157017 / WhatsApp. Cross-reference: Zeron 100 forgings (when forging is preferred over casting), Zeron 100 valves, Zeron 100 pipe, ASTM A182 F55 forging spec.
