S30815 Hot-Rolled Coil, Sheet and Plate

Chemical values are cast-analysis mass percentages. A dash/omitted element means no limit stated in the selected table, never zero content. Cross-standard grade names are comparison references, not automatic equivalence or proof of Sheye certification.

1.4835 / X9CrNiSiNCe21-11-2 is an EN 10095 heat-resisting grade. It is absent from the EN 10028-7:2016 austenitic grade list in Table 3; do not put EN 10095 limits into this pressure-purpose comparison row. EN 10088-1:2023 Table 6 lists the grade and chemistry, but Part 1 is a steel catalogue, not a sheet/plate delivery specification. This does not establish coverage by EN 10088-2 or EN 10028-7. Use the complete name X9CrNiSiNCe21-11-2. Shortened trade descriptions omit some characters and are not the full EN designation.

• DIN Media — DIN EN 10028-7:2016-10Current edition/status; pressure-purpose stainless flat products.
• SIST EN 10028-7:2016 official standard previewPrinted p.6 scope; pp.12–13 complete Table 3 austenitic grade list, including creep-resisting block. 1.4835 is not listed.
• EN 10088-1:2023 CEN standard sampleOriginal Standards Content (Sample), scope and Table6: austenitic heat-resistant steel cast chemistry, row1.4835. Part1 is a list of steels.
• Outokumpu Therma range datasheetTable1: Therma253MA/1.4835/S30815, typical composition,1150°C with EN10095 air/guidance footnote.

Chemistry is heat-analysis mass percent. Omitted elements have no requirement in the cited row, not zero. A480/A480M governs product-analysis tolerances and general requirements. Mechanical values use the printed SI column. ASTM regards SI and inch-pound systems as independent: do not convert ksi to generate an SI acceptance limit. Room-temperature Table 2 reference properties. Confirm delivery heat treatment, specimen preparation, dimensional tolerances and all general requirements against the contractual A480/A480M edition. Yield is based on 0.2% offset; a 0.5% total-extension-under-load alternative is permitted unless otherwise specified. Elongation gauge length is 50 mm or 2 in. HBW and the specified Rockwell scale are alternative permissible methods; thin-gauge superficial hardness provisions apply. The full 2026 numerical tables were not available for verification. Display the reference edition and confirm the contractual edition and certificate before accepting an order.

Reference chemistry is heat-analysis mass percent under ASTM A240/A240M-20a Table 1, printed p.3. Ce is an explicit cerium range, not a total rare-earth range. Elements omitted from the row have no listed limit, not a zero-content requirement. S30815 is the ASTM UNS designation; this table does not assign an AISI Type number. Hot-rolled coil, sheet and plate are product forms; annealing, finish, dimensions, test specimens and certification still need to meet the relevant flat-product requirements. The standard table does not establish Sheye's stock or production size range. 253 MA is an Outokumpu trademark associated with this alloy family. A generic S30815 offer does not by itself establish branded Outokumpu material or a particular steelmaker origin. Nominal steelmaker chemistry and a steelmaker's 650–850 MPa tensile range are not the cited ASTM A240 acceptance limits. The cited ASTM row specifies tensile strength of at least 600 MPa. Current official catalogue edition: A240/A240M-26. Its full numerical tables were not available for direct verification; these are explicitly the 20a reference values, not a claim that every limit was reverified against the 2026 edition.

• ASTM A240/A240M-20a — authored standard, public mirrorS30815: Table 1 printed p.3 (PDF page 3); Table 2 printed p.7 (PDF page 7); Table 2 notes B/C on printed p.10
• ASTM International — A240/A240M-26 official catalogueActive edition updated 17 April 2026; scope 1.1–1.3. Edition and scope reference only; numerical values use the separately identified reference edition.
• ASTM A480/A480M-22a — authored general-requirements standard, public mirror§11.1.1 No.1 sheet finish; §15.2 annealing; §17.1.1 tension-test direction, printed p.6; §17.2 hardness; Table A1.2 printed p.10, general Cr-Ni row and notes A/B
• Alleima — 253 MA technical datasheetUpdated 9 May 2025; trademark statement, Standards, Chemical composition (nominal), and Mechanical properties. Tube/pipe specifications and nominal or maker values are not substituted for ASTM A240 flat-product limits.
• Outokumpu — Therma product range, Therma 253 MATherma 253 MA, UNS S30815; hot-rolled coil and quarto-plate product forms; nominal chemistry table

JSA confirms the 2021 edition remains valid and was reaffirmed on 20 October 2025. Full purchased normative tables and all footnotes were not available for a complete current-edition audit. Listed chemistry is mass percent from primary JIS-grade summaries, not typical mill analysis. Missing cells mean not reproduced or not verified, not zero. Mechanical limits apply to the stated annealed/solution-treated cold-rolled condition at room temperature. Sampling, gauge length, direction, thickness-related rules and acceptance methods require the contractual standard. Corresponding designations are comparisons, not unconditional equivalence or proof that every supplied heat meets all listed standards.

A directly corresponding JIS G4305 grade has not been established from the reviewed primary sources. Do not relabel S30815 as SUS309S, SUS310S or a similarly named SUH grade. JIS G4305 is a cold-rolled standard. JIS G4304 covers hot-rolled stainless flat products and JIS G4312 covers heat-resistant flat products, but the scope of those standards alone does not prove that an S30815 equivalent is included. No JIS chemistry or mechanical values are invented. Any proposed JIS certification requires the exact grade and normative table to be agreed with the mill.

• JSA — JIS G4305:2021, cold-rolled stainless steelCurrent valid edition; reaffirmed2025-10-20; cold-rolled title.
• JSA — JIS G4304:2021, hot-rolled stainless steelCurrent valid edition; reaffirmed2025-10-20; hot-rolled title. S30815 numerical row not established.
• JSA — JIS G4312:2019, heat-resistant plate, sheet and stripCurrent valid edition; reaffirmed2023-10-20. Official preview lists hot-rolled and cold-rolled manufacturing sections.
• Japan Stainless Steel Association — austenitic JIS chemistryReviewed available SUS grade table; no direct S30815-equivalent designation established.
• Japan Stainless Steel Association — heat-resistant SUH chemistryReviewed SUH grade table; no direct S30815-equivalent designation established.

The original GB/T 3280-2015 Table16 and AnnexA identify 08Cr21Ni11Si2CeN / S30859 as the Chinese comparison to UNS S30815. The name 12Cr21Ni11Si2Ce was not verified and must not be substituted. Chemistry is heat analysis in mass percent. This is a standard reference row, not typical mill chemistry or unconditional cross-standard certification. The Sheye product covered here is hot-rolled coil, sheet or plate. For a Chinese hot-rolled or heat-resisting order, confirm the applicable GB/T 4237 or GB/T 4238 grade, delivery condition and mechanical limits separately. This GB/T 3280 comparison does not provide their hot-rolled acceptance limits.

• GB/T 3280-2015, authored standard (reference scan)Table16 printed p.10; Table21 p.16 and footnote p.17; AnnexA TableA.1 p.31. Visually verified from cached original scans.
• SAMR — GB/T 3280-2015, current cold-rolled product standardOfficial current status and cold-rolled title.
• SAMR — GB/T 4237-2015, current hot-rolled product standardOfficial current status and hot-rolled plate, sheet and strip scope. Edition and scope reference only; no S30815-related numerical limits are reproduced from this listing.
• SAMR — GB/T 4238-2015, heat-resisting plate, sheet and stripOfficial current status and heat-resisting flat-product scope. Edition and scope reference only; no grade-specific numerical limits are reproduced from this listing.