Materials Atlas DefMetrix

Stainless Steel · Product form

Stainless Steel Plate

Who makes or stocks plate in this alloy, and can I get it US-melted?

What it is

Flat rolled product above the thickness threshold that separates it from sheet, supplied in the mill-annealed or as-rolled condition and typically sold by the pound from a cut plate.

Typical dimensions
0.1875 inch and thicker; widths to roughly 120 inches depending on mill.
Also known as
plates, flat rolled, cut plate

Suppliers

Grouped by what they actually are. A mill and a distributor answer different needs.

Mills and producers 6

Companies that manufacture this form. Mill direct means longer lead times and mill minimums, with full melt traceability.

  • ATI Inc. Verified
    Dallas, TX · Mill Converter
    US melted

    Flat rolled specialty steel including plate. Grade level availability was not enumerated on the source page. MELT ORIGIN re-confirmed 2026-07-30 and corroborated rather than superseded: this is an integrated domestic producer that melts its own material. It remains a per-heat question regardless. DFARS 252.225-7009 status is settled on the mill certificate for the specific heat, not by the company record.

    source
  • Cleveland-Cliffs Reported
    Cleveland, OH · Mill
    US melted

    More than fifty stainless grades produced. Melt origin recorded as US on the strength of an integrated domestic producer that describes itself as spanning iron ore mining through post-consumer recycling. The deep-dive did NOT establish individual plant locations or whether the route is blast furnace, EAF or DRI, so treat DFARS 252.225-7009 status as a per-heat question to be confirmed on the mill certificate rather than as settled by this record.

    source
  • Electralloy Verified
    Oil City, PA · Mill
    US melted

    Plate through the G.O. Carlson plate arm.

    source
  • North American Stainless Reported
    Ghent, KY · Mill
    US melted

    Integrated melting through finishing at Ghent, Kentucky. MELT ORIGIN re-confirmed 2026-07-30 and corroborated rather than superseded: this is an integrated domestic producer that melts its own material. It remains a per-heat question regardless. DFARS 252.225-7009 status is settled on the mill certificate for the specific heat, not by the company record.

    source
  • Outokumpu Stainless USA Verified
    Calvert, AL · Mill
    US melted

    Melt shop and cold rolling mill at Calvert, Alabama.

    source
  • Universal Stainless & Alloy Products Verified
    Bridgeville, PA · Mill
    US melted

    . Re-confirmed 2026-07-30 and corroborated by the melt routes established this pass: AOD, ESR and VAR at Bridgeville and VIM plus ESR or VAR at North Jackson. Those are different cleanliness levels, not synonyms. An aerospace specification usually names the one it requires, so ask for the route as well as the origin.

    source

Distributors and stockists 9

Companies that hold inventory for resale. Faster and available in small quantities, at a markup. Ask what mill the material came from if traceability matters.

  • Alro Steel Reported
    Jackson, MI · Distributor

    Distributor stock. Establish grade and mill certification per heat rather than from the catalog listing.

    source
  • Continental Steel & Tube Reported
    Fort Lauderdale, FL · Distributor

    Distributor stock. Establish grade and mill certification per heat rather than from the catalog listing.

    source
  • EFINEA Metals Verified
    Franklin Lakes, NJ · Distributor
    AS910017-4PH, 15-5PH

    Stocked as precipitation hardening stainless only. EFINEA lists 17-4PH and 15-5PH under high strength stainless; it is not a source for 300 series stainless.

    source
  • Olympic Steel Verified
    Highland Hills, OH · Distributor Service provider

    Stainless is explicitly among the stocked flat-rolled metals.

    source
  • Penn Stainless Products Verified
    Quakertown, PA · Distributor Service provider

    Stocked in over thirty grades spanning 300 and 400 series, duplex, 17-4PH and high temperature grades, with cutting, polishing, grinding and fabrication available.

    source
  • Rolled Alloys Reported
    Temperance, MI · Distributor Service provider
    2205 Duplex

    Duplex and austenitic stainless plate within a heat and corrosion resistant alloy catalogue. Forms not confirmed on the company page.

    source
  • Ryerson Inferred
    Chicago, IL · Distributor

    Distributor stock. Establish grade and mill certification per heat rather than from the catalog listing.

    source
  • Sandmeyer Steel Company Verified
    Philadelphia, PA · Distributor Service provider
    304 and 304L, 316 and 316L, 2205 Duplex

    Stocks over 15 million pounds on a single site, which the company describes as the most extensive single-site stainless plate inventory in North America. Grades include 304/304L, 316/316L, 317/317L, 321, 347, duplex 2205 and 2507, and 904L. Processing in house covers plasma, laser and five-axis waterjet cutting, bandsaw, drilling, milling, polishing and flattening. Thickness and width ranges are published only in a downloadable stock list, so they are not recorded here.

    source
  • TW Metals Reported
    Exton, PA · Distributor

    Distributor stock. Establish grade and mill certification per heat rather than from the catalog listing.

    source

Elsewhere in the atlas

Stainless SteelMaterial overview and full supply chainSearch and filterNarrow by state, alloy, role or process