| Trade Name | Grade | UNS# | Flanges |
|---|---|---|---|
| 304 | TP304 | S30400 | A182 / SA182 |
| 304L | TP304L | S30403 | A182 / SA182 |
| 304H | TP304H | S30409 | A182 / SA182 |
| 316 | TP316 | S31600 | A182 / SA182 |
| 316L | TP316L | S31603 | A182 / SA182 |
| 316H | TP316H | S31609 | A182 / SA182 |
| 321 | T321 | S32100 | A182 / SA182 |
| 321H | TP321H | S32109 | A182 / SA182 |
| 347 | TP347 | S34700 | A182 / SA182 |
| 347H | TP347H | S34709 | A182 / SA182 |
| 317L | TP317L | S31703 | A182 / SA182 |
Work Scope
This specification covers forged stainless steel flanges for use in pressure systems manufactured to specified dimensions or to industry standard dimensional specifications.
For bars and products machined directly from bar refer to Specifications A/SA479/A/SA479M for the similar grades available in this specification. Products made to this specification are limited to a maximum weight of 10 000 lb [4540 kg]. For larger products and products for other applications, refer to Specification A/SA965/A/SA965M for the similar austenitic grades available in this specification.
Supplementary requirements are provided for use when additional testing or inspection is desired. These shall apply when specified individually by the purchaser in the order.
Review of Procurement Requirements:
It is the purchaser’s responsibility to specify in the purchase order all ordering information necessary to purchase the needed material. In addition to the ordering information guidelines in Specifications A/SA961 / A/SA961M, orders should include the following information:
- Additional requirements, and
- Description of flange and nominal dimensions (standard or special)
- Requirement, if any, that manufacturer shall submit drawings for approval showing the shape of the rough forging before machining and the exact location of test specimen material.
