Standards Worldwide
Standards Worldwide
Phone +49 30 58885700-07

Standard [CURRENT]

ASTM A 1091/A 1091M:2025

Standard Specification for Steel Castings, Creep-Strength Enhanced Ferritic Alloy, for Pressure-Containing Parts, Suitable for High-Temperature Service

Publication date
2025
Original language
English
Pages
6

from 73.80 EUR VAT included

from 68.97 EUR VAT excluded

Format and language options

PDF download
  • 73.80 EUR

  • 88.60 EUR

Shipment (3-5 working days)
  • 82.10 EUR

Monitor with the Standards Ticker

This option is only available after login.
Easily subscribe: Save time and money now!

You can also subscribe to this document - together with other important standards in your industry. This makes your work easier and pays for itself after a short time.

Sparschwein_data
Subscription advantages
Sparschwein Vorteil 1_data

Important standards for your industry, regularly updated

Sparschwein Vorteil 2_data

Much cheaper than buying individually

Sparschwein Vorteil 3_data

Useful functions: Filters, version comparison and more

Publication date
2025
Original language
English
Pages
6
DOI
https://dx.doi.org/10.1520/A1091_A1091M-25

Quick delivery via download or delivery service

Buy securely with a credit card or pay upon receipt of invoice

All transactions are encrypted

Short description
1.1 This specification covers creep-strength enhanced alloy steel castings for valves, flanges, fittings, and other pressure-containing parts intended primarily for high-temperature service (see Note 1 ). However, they are not restricted to such applications and the castings may be used for other applications for which the attributes of the material, as defined by this specification, are suitable. 1.2 Two grades of martensitic alloy steel, Grade C91 (UNS No. J84090) and Grade C933 (UNS No. J84093), are covered. Grade C91 is provided in two classes, differentiated by the type of heat treatment after welding. Both grades, and similar steels, are characterized by a predominantly tempered martensitic or tempered bainitic microstructure that is stabilized by the precipitation of temper-resistant particles at various precipitate nucleation sites in the microstructure. Such steels are designed to have creep-rupture strengths significantly superior to those of alloys of nominally similar compositions, but in which the precipitates or nucleation sites are absent. Since this crucial difference cannot be revealed by room temperature mechanical property tests, these alloys require tighter controls on manufacturing and processing. Note 1: The grades covered by this specification represent materials that are generally suitable for assembly with other castings or wrought steel parts by fusion welding. It is not intended to imply that these grades possess equal degrees of weldability; therefore, it is the responsibility of the purchaser to establish a suitable welding technique. Since these grades possess varying degrees of suitability for high-temperature service, it is also the responsibility of the purchaser to determine which grade shall be furnished, due consideration being given to the requirements of the applicable construction codes. 1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ICS
77.140.80
DOI
https://dx.doi.org/10.1520/A1091_A1091M-25
Also available in
Loading recommended items...
Loading recommended items...
Loading recommended items...
Loading recommended items...