Stainless Steel Alloy Pipe, Valves, Fittings & Flanges

304, 304L, 304H, 316, 316L, 316H, 321, 321H, 347, 347H, 317L

One of the Most Extensive Stainless Steel Inventories in the World.

Our Chrome Alloy inventory is unsurpassed and is considered one of the most extensive chrome inventories in the world!

Turnarounds or outages, planned retrofits or emergency situations, grassroots projects worldwide; U.S. Metals has the experienced staff to assist you on all of your specialty alloy requirements, no matter how detailed the specification, no matter how difficult the situation.

New industry requirements, not an issue. We work closely with agencies like EPRI along with our utility and refining clients to be on the cutting edge of new industry requirements that affect your high energy/high temperature piping systems.

Our inventory is evolving to meet the new specifications that prevent current issues as creep cracking and hardness problems.



  • Trade Name
    304
    304L
    304H
    316
    316L
    316H
    321
    321H
    347
    347H
    317L
    UNS #
    S30400
    S30403
    S30409
    S31600
    S31603
    S31609
    S32100
    S32109
    S34700
    S34709
    S31703


  • Trade Name
    1 1/4 Chrome
    2 1/4 Chrome
    5 Chrome
    9 Chrome
    91
    92
    A691
    A691
    A691
    A691
    A691
    ----
    Grade
    1 1/4CR
    2 1/4CR
    5CR
    9CR
    91
    ----


  • Trade Name
    1 1/4 Chrome
    2 1/4 Chrome
    5 Chrome
    9 Chrome
    91
    92
    A213
    A213
    A213
    A213
    A213
    A213
    Grade
    T11
    T22
    T5
    T9
    T91
    T92
    UNS #
    K11597
    K21590
    K41545
    K90941
    K90901
    K92460


  • Trade Name
    1 1/4 Chrome
    2 1/4 Chrome
    5 Chrome
    9 Chrome
    91
    92
    A234
    A234
    A234
    A234
    A234
    ----
    Grade
    WP11 / WP11W
    WP22 / WP22W
    WP5 / WP5W
    WP9 / WP9W
    WP91 / WP91W
    ----


  • Trade Name
    1 1/4 Chrome
    2 1/4 Chrome
    5 Chrome
    9 Chrome
    91
    92
    A182
    A182
    A182
    A182
    A182
    A182
    Grade
    F11
    F22
    F5
    F9
    F91
    F92
    Class 1 / UNS #
    K11597
    K21590
    K41545
    K90941
    K90901
    K92460
    Class 2 / UNS #
    K11572
    ----
    ----
    ----
    ----
    ----
    Class 3 / UNS #
    K11572
    K21590
    ----
    ----
    ----
    ----


  • Trade Name
    1 1/4 Chrome
    2 1/4 Chrome
    5 Chrome
    9 Chrome
    91
    92
    A182
    A182
    A182
    A182
    A182
    A182
    Ident Symbol
    F11
    F22
    F5
    F9
    F91
    F92
    Class 1 / UNS #
    K11597
    K21590
    K41545
    K90941
    K90901
    K92460
    Class 2 / UNS #
    K11572
    ----
    ----
    ----
    ----
    ----
    Class 3 / UNS #
    K11572
    K21590
    ----
    ----
    ----
    ----


  • Trade Name
    1 1/4 Chrome
    2 1/4 Chrome
    5 Chrome
    9 Chrome
    91
    92
    A182
    A182
    A182
    A182
    A182
    A182
    Ident Symbol
    F11
    F22
    F5
    F9
    F91
    F92
    Class 1 / UNS #
    K11597
    K21590
    K41545
    K90941
    K90901
    K92460
    Class 2 / UNS #
    K11572
    ----
    ----
    ----
    ----
    ----
    Class 3 / UNS #
    K11572
    K21590
    ----
    ----
    ----
    ----


  • Trade Name
    1 1/4 Chrome
    2 1/4 Chrome
    5 Chrome
    9 Chrome
    91
    92
    A217
    A217
    A217
    A217
    A217
    ----
    Grade
    WC6
    WC9
    C5
    C12
    C12A
    ----
    UNS #
    J12072
    J21890
    J42045
    J82090
    J84090
    ----


  • Trade Name
    1 1/4 Chrome
    2 1/4 Chrome
    5 Chrome
    9 Chrome
    91
    92
    Chrome Alloy Plate
    A387
    A387
    A387
    A387
    A387
    A387
    Grade
    11
    22
    5
    9
    91
    ----
    Class 1 / UNS #
    K11789
    K21590
    S50200
    K90941
    ----
    ----
    Class 2 / UNS #
    K11789
    K21590
    S50200
    K90941
    K90901
    ----


  • Trade Name
    1 1/4 Chrome
    2 1/4 Chrome
    5 Chrome
    9 Chrome
    91
    92
    Chrome Alloy Bar
    A182
    A182
    A182
    A182
    A182
    A182
    Grade
    F11
    F22
    F5
    F9
    F91
    ----
    UNS #
    ----
    ----
    ----
    ----
    ----
    ----

Information provided in this page is in accordance with the 2013 Edition of the ANNUAL BOOK OF ASTM STANDARDS.
Refer to ASME B & PV Section II for non-identical A/SA requirements