Stainless steel 347 UNS S34700 has good mechanical properties, suitable for use in high temperature environment. SS 347 also has good intergranular corrosion resistance at chromium carbide precipitation temperatures between 800 and 1500 degrees Fahrenheit.SS 347 is similar to SS 321 in terms of intergranular corrosion, which is achieved by using niobium as a stabilizing element to maximize this property.SS347 can not be quenched by heat treatment, but can be improved by cold reduction.SS347h is an improvement of SS347 with a higher carbon content to provide better high temperature strength.
Property Of 347 Stainless Steel Tube
AISI No / Common Name | C | Si | Mn | P | S | Cr | Mo | Ni | Others |
347 | 0.08 | 0.75 | 2 | 0.045 | 0.03 | 17.0/19.0 | – | 9.0/13.0 | Nb+Ta 10 x C min/1.0 |