Hechuang Stainless SteelA Kongfang Metal Company

310S Heat-Resistant Stainless Steel

310S stainless steel supply in plate, sheet, coil, strip, pipe, tube and bar, with grade data, processing, inspection and export support.

310S for High-Temperature Projects

Hechuang Stainless Steel supplies 310S plate, sheet, coil, strip, pipe, tube and bar for furnace equipment, heat-treatment fixtures and other elevated-temperature components. We can include cutting, fabrication preparation, inspection and export packing in the order. 310S is an austenitic chromium-nickel stainless steel identified as UNS S31008 or EN 1.4845; the ordered product standard determines the applicable requirements. For fabricated items, include drawing tolerances, weld preparation, surface condition, marking and packing requirements. Send the standard, product form, dimensions, quantity, operating atmosphere and inspection scope for a form-specific quotation.

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Heat-resistant stainless steel plate stack prepared for supply review

310S at a Glance

UNS designation
S31008
EN designation
1.4845
Structure
Austenitic
Typical Cr / Ni
25.5% / 19.1%
Available forms
10 product forms
Response target
We normally reply within 1 business day. Technical enquiries may require additional review.

Standards & Designations

Start the RFQ with the naming system your project uses, then add the product standard, edition, form and inspection requirements. Use the same description in the quotation, purchase order and MTC check.

Units
Designation identifiers; no dimensional unit.
Product
Cross-product comparison; name the applicable flat, tubular, bar, forging or fitting standard separately.
Condition
Designation reference; material acceptance follows the ordered product standard and MTC.
Applicability
Use the row matching your order system and state the exact product standard because the designations are not automatically interchangeable.
310S designations for clear purchase descriptions
SystemDesignationWhat to state in the 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 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.

Units
% by mass.
Product
310S / 1.4845 cold-rolled coil and sheet, hot-rolled coil and sheet, and quarto plate.
Condition
Typical chemistry for this austenitic grade.
Applicability
Use for grade comparison, then check the ordered limits and heat-specific results on the applicable MTC.

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310S/4845 typical 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.

Units
MPa for strength, % for elongation, HRB or HB for hardness.
Product
Annealed plate, sheet and coil in the flat-product summary.
Condition
Solution-annealed flat product at room temperature.
Applicability
Use when preparing the RFQ. Thickness rules, test method and acceptance criteria follow the ordered product standard.

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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.

Units
Units and temperature points are stated in each row.
Product
310S / 1.4845 flat products covered by the manufacturer data.
Condition
Values at the stated temperature or between 20°C and the stated temperature.
Applicability
Use the temperature-specific row with the project design code, product form and actual service conditions.

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310S/4845 physical properties by temperature
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 air-atmosphere guidance below as a starting point, then evaluate the component's complete operating conditions and design requirements.

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

Product: 310S / 1.4845 flat products: cold- and hot-rolled coil and sheet, plus hot-rolled and quarto plate.

Applicability: This air-atmosphere value is a starting point, not a universal component design limit. Material selection must account for the temperature profile, atmosphere, load, pressure, cycling, deposits, section size, fabrication route and governing design code.

Engineer and buyer comparing stainless plate, tube and bar product forms

310S Product Forms

Open the form page that matches your purchase. Each page shows its dimensions, finish, processing, inspection and RFQ details.

The product-form list shows our regular supply capability. The dated stock table shows only current and common inventory; a form or boundary size not listed there is not a supply limit.

Calculate theoretical weight
310S PlateHot-rolled and quarto plate dimensions, cutting, finish and inspection.Regular supplyIn stock · 2026-09-08310S SheetHot- and cold-rolled sheet with finish, flatness, film and cut length.Regular supplyIn stock · 2026-09-08310S CoilCoil supply by thickness, width, coil weight, ID/OD, edge and finish.Regular supplyIn stock · 2026-09-08310S StripPrecision strip by thickness, slit width, condition, edge and coil presentation.Regular supplyIn stock · 2026-09-08310S Pipe & TubeSeamless and welded pipe or tube by OD, wall, length, heat treatment and testing.Regular supplyIn stock · 2026-09-08310S BarRound and forged bar by diameter, condition, machining allowance and inspection.Regular supplyIn stock · 2026-09-08310S ForgingsForged starting shapes with machining allowance, heat treatment and inspection matched to the part.Regular supplyAvailable to order310S FlangesFlanges supplied by type, size, facing, product standard and documentation scope.Regular supplyAvailable to order310S FittingsSeamless or welded fittings with geometry, wall and end preparation matched to the assembly.Regular supplyAvailable to order310S Custom PartsDrawing-based parts combining material, cutting, forming, machining and inspection.Regular supplyAvailable to order

Common specifications and stock

Stock snapshot:

The product-form list shows our regular supply capability. The dated stock table shows only current and common inventory; a form or boundary size not listed there is not a supply limit.

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Product formSpecificationSurface / conditionAvailability
Cold-rolled sheet1.5 × 1500 × 3000 mm2B · Solution annealedCommon specificationIn stock
Hot-rolled plate8 × 1500 × 6000 mmNo.1 · Solution annealedCommon specificationIn stock
Hot-rolled coil6 × 1500 mm coilNo.1 · Solution annealedCommon specificationIn stock
Slit strip2 × 200 mm coil2B · Solution annealedCommon specificationIn stock
Welded pipeOD 108 × 3 wall × 6000 mmPickled · Welded / solution annealedCommon specificationIn stock
Round barØ25 × 6000 mmPickled · Hot rolled / solution annealedCommon specificationIn stock

Please confirm current quantity, tolerances, documents and delivery in the written quotation.

Available Dimensions

Units
Millimetres (mm).
Product
310S stainless steel plate.
Condition
Surface, delivery condition and tolerances are stated in the purchase description.
Applicability
State the grade, standard, exact dimensions, quantity and inspection scope; the written quotation confirms the available combination.

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310S hot-rolled flat-product supply range
ProductThicknessWidthLength
310S hot-rolled sheet and plate3–16 mmUp to 2,500 mmUp to 12,500 mm
310S medium and heavy plate16–150 mmUp to 2,500 mmUp to 12,500 mm

Supply range is not live stock. Send the standard, exact dimensions, quantity and inspection scope, and we will confirm current availability.

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. Specify GTAW, GMAW, SMAW or SAW as required by the qualified 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.

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

310 vs 310SCompare carbon ranges, designations, welding and order requirements.309S vs 310SCompare alloy content, service inputs and purchasing decisions.310S vs 253MACompare alloy systems, cycling, atmosphere and fabrication requirements.310S Standards & DesignationsBuild an unambiguous ASTM, UNS, EN, JIS or GB purchase description.310S Welding & FabricationSpecify cutting, forming, welding, cleaning and inspection requirements.310S for Industrial FurnacesOrganize component, service, fabrication, inspection and packing inputs.310S MTC & RFQ ChecklistRequest the documents and inspection details needed with your order.
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Bend geometry, welds, supports and access for inspection all affect the component review.
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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 designations, but the purchase order should name the exact designation and governing product standard. That standard and the ordered form determine the composition limits, properties, dimensions and inspection requirements.

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

    We regularly supply 310S plate, sheet, coil, strip, seamless or welded pipe and tube, bar, forgings, flanges, fittings and custom parts. Current stock is shown separately; forms not in the dated stock snapshot remain available to order.

  4. What temperature can 310S stainless steel handle?

    There is no single temperature that suits every component. Use air-atmosphere data as a starting point, then evaluate the temperature profile, atmosphere, load, cycling, section size, fabrication and design code for the application.

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

    Yes. We can supply cut-to-length or slit material and arrange 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.

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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