Hechuang Stainless SteelA Kongfang Metal Company

310S Heat-Resistant Stainless Steel

Compare producer-published 310S naming, properties, product forms, China supply routes, fabrication and inspection inputs for an industrial quotation.

310S for High-Temperature Projects

310S is an austenitic chromium-nickel stainless steel selected for furnace equipment, heat-treatment fixtures and other components exposed to elevated-temperature oxidation. Hechuang Stainless Steel supplies 310S across plate, sheet, coil, strip, pipe or tube, and bar routes, with cutting, fabrication, inspection and export packing organized around the order. This page compares the producer-published UNS S31008 and EN 1.4845 naming routes, source-scoped properties and form-specific purchasing paths. Send the required standard, product form, dimensions, quantity, operating atmosphere and inspection scope, and our team will match the material and supply route to the project.

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310S heat-resistant stainless steel plate stack

310S at a Glance

UNS route
S31008
EN route
1.4845
Structure
Austenitic
Typical Cr / Ni
25.5% / 19.1%
Commercial forms
6 focused routes
Response target
Within 1 business day

Standards & Designations

Start the RFQ with the naming system your project uses, then add the product standard, edition, form and inspection requirements. This keeps the supply route clear from quotation through MTC review.

Source scope: Published comparison references for 310S naming. The ordered product standard and edition control contractual values.

Units
Designation identifiers; no dimensional unit.
Product
Cross-product reference; name the applicable flat, tubular, bar, forging or fitting standard separately.
Condition
Designation comparison only; not a material acceptance table.
Applicability
Use the row matching the order system and confirm the exact product standard rather than treating every name as automatically interchangeable.
310S designation comparison for purchase descriptions
SystemPublished designationHow to use it in an RFQ
ASTM / UNSType 310S / UNS S31008Pair with the required ASTM product standard.
EN1.4845 / X8CrNi25-21State the material number, steel name and product standard.

Typical Chemical Composition

The typical producer values below explain the alloy balance behind the 310S family. For order acceptance, compare the heat-specific MTC with the chemical limits in the product standard named in the purchase order.

Source scope: Typical producer values for Outokumpu Therma 310S/4845; these are not heat acceptance limits. The ordered product standard and edition control contractual values.

Units
% by mass.
Product
Therma 310S/4845 cold-rolled coil and sheet, hot-rolled coil and sheet, and quarto plate.
Condition
Producer typical chemistry for the austenitic grade route.
Applicability
Use for material orientation. Confirm the ordered limits and heat-specific results on the applicable MTC.

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Outokumpu Therma 310S/4845 typical producer chemistry
ElementTypical valueData class
Carbon (C)0.05%Typical producer value
Chromium (Cr)25.5%Typical producer value
Nickel (Ni)19.1%Typical producer value
Silicon (Si)0.5%Typical producer value

Specified Mechanical Properties

Use this flat-product summary to prepare an enquiry, while keeping the ordered standard, thickness rules, test method and certificate results as the acceptance basis.

Source scope: Specified room-temperature values published for Grade 310S flat product in the Atlas grade sheet. The ordered standard and edition control contractual values.

Units
MPa for strength, % for elongation, HRB or HB for hardness.
Product
Annealed plate, sheet and coil covered by the source's flat-product summary.
Condition
Solution-annealed flat product at room temperature.
Applicability
Use as an RFQ screening reference. Thickness rules, test method and acceptance criteria follow the ordered product standard.

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Atlas 310S flat-product specified-property summary
PropertySpecified valueBasis
Tensile strength515 MPa minimumRoom-temperature flat product
0.2% proof strength205 MPa minimumRoom-temperature flat product
Elongation in 50 mm40% minimumRoom-temperature flat product
Hardness95 HRB / 217 HB maximumRoom-temperature flat product

Physical Properties

Temperature matters in physical-property data. Each row therefore keeps its temperature point or range beside the published value so designers and buyers can discuss the same basis.

Source scope: Producer physical-property data based on European-standard information and Outokumpu experience for Therma 310S/4845.

Units
Units and temperature points are stated in each row.
Product
Therma 310S/4845 producer grade route; engineering reference across listed flat products.
Condition
Reference values at the stated temperature or between 20°C and the stated temperature.
Applicability
Use the temperature-specific row in design screening and verify the project design code, product route and service condition.

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Outokumpu Therma 310S/4845 physical-property values
PropertyPublished valueTemperature basis
Density7.8 kg/dm³20°C
Modulus of elasticity196 / 150 / 120 GPa20 / 600 / 1,000°C
Mean thermal expansion18.8 / 19.4 / 20.0 × 10⁻⁶/K20–600 / 20–800 / 20–1,000°C
Thermal conductivity15 / 19 / 24 W/(m·K)20 / 500 / 800°C
Specific heat capacity472 J/(kg·K)20°C
Electrical resistivity0.96 Ω·mm²/m20°C

High-Temperature Service Guidance

Use the source-specific air-atmosphere screening guidance below to start the material review, then match it to the component's complete operating and design context.

1,050°CMaximum application temperature in air according to EN 10095.

Source scope: Outokumpu Therma 310S / 1.4845

Product: Therma 310S/4845 flat-product route: cold- and hot-rolled coil and sheet, plus hot-rolled and quarto plate.

Applicability: Source-specific screening reference only, not a universal component or design limit. Review the temperature profile, atmosphere, load, pressure, cycling, deposits, section size, fabrication route and governing design code.

310S Product Forms

Open the form page that matches your purchase intent. Each route keeps its dimensions, finish, processing, inspection and RFQ details separate for faster review.

310S PlateHot-rolled and quarto plate dimensions, cutting, finish and inspection.310S SheetHot- and cold-rolled sheet with finish, flatness, film and cut length.310S CoilCoil route by thickness, width, coil weight, ID/OD, edge and finish.310S StripPrecision strip by thickness, slit width, condition, edge and coil presentation.310S Pipe & TubeSeamless and welded routes by OD, wall, length, heat treatment and testing.310S BarRound and forged bar by diameter, condition, machining allowance and inspection.

Available Dimensions

Source scope: Published 310S plate route in the China supply network. Availability is matched to the requested standard, dimensions, quantity and inspection scope.

Units
Millimetres (mm).
Product
310S stainless steel plate.
Condition
Published dimensional listing; surface, delivery condition and tolerances are confirmed in the purchase description.
Applicability
Grade, standard, mill route, quantity, inspection scope and written quotation review are required before the dimensions form part of an order.

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Published China 310S plate dimensional route
ProductThicknessWidthLength
310S plate5–80 mm800–3,400 mm2,000–12,500 mm

Availability is matched to the requested standard, dimensions, quantity and inspection scope. Send us your requirements and we'll confirm the most suitable route.

Cutting, Fabrication & Inspection

Processing Route

Select cut-to-length, slitting, laser, waterjet or plasma cutting, bending, rolling, machining, welding preparation, surface treatment and export packing from the requirements on your drawing.

Welding Preparation

Define joint geometry, filler selection, WPS/PQR, heat input, interpass controls, cleaning and passivation with the fabricator. GTAW, GMAW, SMAW and SAW routes can be reviewed against the source guidance and project procedure.

Inspection Options

Specify MTC type, heat traceability, dimensions, surface, PMI, NDT and any SGS, BV, TÜV or CCIC witness point before quotation so the inspection plan and cost are aligned with the order.

Follow the comparison, standards, fabrication, inspection or furnace route that fits the decision in front of you. You can also browse the complete technical guide library.

310 vs 310SCompare carbon ranges, naming and procurement implications.309S vs 310SCompare alloy content, service inputs and purchasing decisions.310S vs 253MAReview alloy systems, cycling, atmosphere, fabrication and route drivers.310S Standards & DesignationsBuild an unambiguous ASTM, UNS, EN, JIS or GB purchase description.310S Welding & FabricationPlan cutting, forming, welding, cleaning and inspection preparation.Industrial Furnace Project SolutionOrganize component, service, fabrication, inspection and packing inputs.310S MTC & RFQ ChecklistReview documents and send the details needed for a complete quotation.

Frequently asked questions

  1. What is 310S stainless steel?

    310S is an austenitic chromium-nickel stainless steel identified as UNS S31008. Its alloy system is used for equipment and components that need oxidation resistance and strength at elevated temperatures.

  2. Are 310S, UNS S31008 and EN 1.4845 automatically equivalent?

    They are useful comparison references, but the purchase order should name the exact designation and governing product standard. Product form, composition limits, properties, dimensions and inspection requirements follow that ordered route.

  3. Which 310S product forms can Hechuang Stainless Steel supply?

    The focused 310S program covers plate, sheet, coil, strip, seamless or welded pipe and tube, and bar. Forgings, flanges, fittings and custom parts can also be reviewed from drawings and order requirements.

  4. What temperature can 310S stainless steel handle?

    There is no single temperature that suits every component. Use source-specific air-atmosphere guidance for initial screening, then review the temperature profile, atmosphere, load, cycling, section size, fabrication and design code for the application.

  5. Can 310S be cut, formed and welded?

    Yes. The supply route can include cut-to-length, slitting, laser, waterjet or plasma cutting, bending, rolling, machining and welding preparation. Joint design, filler, procedure qualification, cleaning and inspection should be set by the fabricator and project specification.

  6. What inspection documents are available for a 310S order?

    Orders can include an MTC linked to the supplied heat and ordered standard. EN 10204 3.1, PMI, dimensional or surface records, NDT and third-party inspection can be included when they are defined in the quotation and purchase order.

  7. What information should I send for a 310S quotation?

    Send the designation and product standard, product form, dimensions, quantity, delivery condition, surface or edge, service atmosphere, fabrication needs, inspection and certificate scope, packing, destination and required delivery date.

Reviewed by Hechuang Stainless Steel Technical & Quality Team
Last updated:

Technical References

  1. Therma 310S / 1.4845Outokumpu
  2. 310S Stainless Steel PlateJiangsu Dageng

    Product-page evidence for this specific 310S dimensional route.

  3. Confirmed Product ProgramWuxi Hechuang Stainless Steel Co., Ltd.

Supporting References

  1. Grade Data Sheet — 310 / 310S / 310HAtlas Steels

    Secondary guidance. The ordered standard controls contractual values.

  2. China Supply-Network Dimension ReferencesWuxi Hechuang Stainless Steel Co., Ltd.

Talk to the 310S Team

What to Send for a Quote

Send the standard, product form, dimensions, quantity, service inputs, inspection scope, packing and destination. Hechuang Stainless Steel Sales Team will respond within one business day.

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Send your RFQ

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