Alloy 321h
(UNS A97075) W Nr.3.4365
| Chemical composition | C | Si | Mn | P | S | Cr | Ti | Ni | N | Fe |
|---|---|---|---|---|---|---|---|---|---|---|
| % Present (Max) | 0.40 – 0.10 | 0.75 | 2.00 | 0.045 | 0.030 | 17.00 – 19.00 | 0.7 | 9.00 – 12.00 | 0.10 | Bal |
Alloy 321H (UNS S32109) is the higher carbon (0.04–0.10) version of the alloy.
It was developed for enhanced creep resistance and for higher strength at temperatures above 1000°F (537°C).
In most instances, the carbon content of the plate enables dual certification.
Note: Values are in accordance with EN 10088 specifications. Actual mill certs available upon request.