314 Stainless Steel Supplier

Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of 314 Stainless Steel Supplier in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.

314 Stainless Steel Supplier - UNS S31400 / EN 1.4841

Dongmeng Group supplies 314 stainless steel for furnace equipment, heat-treatment fixtures, superheater supports, enameling systems and other components exposed to elevated temperatures.

AISI 314 is a high-chromium, high-nickel austenitic heat-resistant stainless steel containing additional silicon. Its alloy design provides strong oxidation and scaling resistance in high-temperature air while maintaining useful creep strength.

Customers can order sheet, plate, coil, strip, bar, wire and drawing-based components, subject to the selected material standard, product form and mill availability.

314 stainless steel is an austenitic heat-resistant alloy containing high levels of chromium and nickel together with approximately 1.5–3% silicon, depending on the governing material specification.

Chromium supports the formation of a protective oxide layer, while nickel stabilizes the austenitic structure and contributes to elevated-temperature strength. Silicon improves scaling and oxidation resistance under suitable high-temperature conditions.

Outokumpu classifies 314/1.4841 as an austenitic heat-resistant grade with excellent oxidation resistance and lists furnace equipment, superheater suspensions, enameling grates and hardening boxes among its typical applications.

314 is primarily designed for high-temperature service. It should not automatically be selected as a general-purpose replacement for 304, 316L or other stainless steels used in aqueous and chloride-containing environments. High-temperature stainless grades are optimized for oxidation and creep performance, which can limit their resistance in some wet-corrosion conditions.

AISI 314 and EN 1.4841 are commonly treated as corresponding grades, but their permitted chemistry limits may not be completely identical.

Purchase orders should therefore state:

Required material standard

Exact grade or UNS number

Product form

Heat-treatment condition

Required mechanical properties

Testing and certification requirements

Substitution between S31400 and EN 1.4841 should only be made after confirming the complete chemistry and mechanical requirements.

The following limits represent EN 1.4841 / X15CrNiSi25-21 flat products and bars commonly associated with AISI 314.

A representative commercial 314 chemistry published by Outokumpu is approximately 0.06% carbon, 24.3% chromium, 19.2% nickel and 1.6% silicon. Exact acceptance must be based on the governing specification and Mill Test Certificate.

Some UNS S31400 specifications permit a wider carbon or silicon range than EN 1.4841. Do not combine chemistry limits from different standards in one material certificate or purchase requirement.

The following room-temperature properties are representative of annealed EN 1.4841 sheet, plate and bar products.

Mechanical properties vary according to product form, section thickness, heat treatment, testing direction and governing specification. Final acceptance must follow the purchase order and material certificate.

Oxidation Resistance

314 stainless steel can provide excellent resistance to oxidation and scaling in air at temperatures up to approximately 1150°C.

This temperature is guidance for oxidation resistance in air-not a universal allowable service temperature.

The actual operating limit depends on:

Continuous or intermittent exposure

Applied mechanical stress

Required creep life

Furnace atmosphere

Oxygen potential

Sulfur activity

Carbon activity

Thermal cycling

Component thickness

Fabrication and welding condition

Outokumpu lists approximately 1150°C as an air-service oxidation reference for 314/1.4841.

Embrittlement Range

314 has a high susceptibility to structural embrittlement during continuous operation at approximately 600–900°C.

Material that has remained in this temperature range for extended periods may show reduced room-temperature ductility or impact toughness after cooling.

This does not mean that the material can never operate in the range. The design engineer must evaluate exposure time, stress, section thickness, thermal cycling and inspection requirements.

Sulfur-Containing Atmospheres

High chromium and silicon do not guarantee resistance to every sulfur-bearing furnace atmosphere.

Published material guidance indicates that resistance to oxidizing and reducing sulfurous gases can be limited. Performance depends heavily on oxygen potential, sulfur concentration and temperature.

Ferritic heat-resistant grades may provide better resistance in some sulfur-containing gas environments because they contain little or no nickel.

Carburizing and Low-Oxygen Conditions

314 should not be promoted as universally resistant to carburizing atmospheres.

Resistance may decrease in strongly carburizing gases, particularly at elevated temperatures where a stable protective oxide layer cannot form.

Atmosphere composition must be reviewed before selecting 314 for:

Petrochemical furnace components

Carbon-rich process gases

Heat-treatment furnaces

Low-oxygen combustion zones

Nitriding or carburizing equipment

These temperatures are comparative oxidation guidance rather than pressure-design limits. Outokumpu identifies 309S for service up to approximately 1000°C, 310S up to approximately 1050°C and 314/1.4841 up to approximately 1150°C under suitable conditions.

Choose 314 instead of 310S when the project specifically benefits from its increased silicon content and the atmosphere, fabrication route and exposure cycle have been evaluated.

Do not select 314 solely because it has the highest listed oxidation temperature.

Sheet and Plate

Available for furnace liners, heat shields, baffle plates, trays, boxes and fabricated high-temperature assemblies.

Common supply conditions include:

Hot rolled and pickled

No.1 finish

Cold rolled

Ground or polished

Cut-to-size plate

Drawing-based fabricated panels

Flat stainless steel products may be ordered to ASTM A240/A240M, EN 10095, JIS G4312 or another agreed specification, depending on grade availability and project requirements.

ASTM A240/A240M covers stainless steel plate, sheet and strip for pressure-vessel and general applications. JIS G4312:2019 is the active Japanese standard for heat-resistant steel plate, sheet and strip.

Coil and Strip

Coil and precision strip can be supplied for:

Furnace clips

Retaining parts

Thin heat shields

Formed brackets

Electrical heating equipment

Continuous production components

Available width, thickness and edge condition depend on mill rolling capability and minimum production quantity.

Bar and Rod

Round, square and flat bars can be supplied for machined furnace hardware, shafts, supports, spacers and fastening components.

ASTM A276/A276M covers hot- and cold-finished stainless steel bars and shapes. The purchase order must separately state UNS S31400 and confirm that the requested grade is covered by the selected specification and edition.

Wire

Wire may be supplied for furnace fixtures, woven products, fastening components and formed heat-resistant parts.

ASTM A580/A580M covers stainless steel wire for general corrosion resistance and high-temperature service. Grade, diameter, temper and mechanical properties must be specified.

Pipe and Tube

314 pipe and tube availability is more limited than standard 304, 316L or 310S tubing.

Before publishing or quoting a pipe specification, confirm:

Whether S31400 is included in the requested standard

Seamless or welded manufacturing route

Outside diameter and wall thickness

Heat-treatment requirements

Elevated-temperature design code

NDT and pressure-test requirements

Mill qualification and available production route

Do not automatically apply a sheet, bar or general heat-resistant steel standard to pipe and tube products.

AISI 314 is a stainless steel grade. ASTM A314 is a product specification.

ASTM A314 covers stainless steel billets and bars intended for forging. The number "314" in ASTM A314 does not mean that every product manufactured to the standard is AISI Type 314 stainless steel.

A correct purchase order for forging stock should identify both:

The applicable product standard

The required grade, such as UNS S31400

ASTM currently describes A314 as a specification for stainless steel billets and bars intended only for forging.

314 is normally supplied in a solution-annealed condition.

The heat-treatment route must provide:

Complete dissolution of undesirable precipitates

A uniform austenitic structure

Suitable room-temperature ductility

Controlled grain size

Required high-temperature performance

Surface condition appropriate for fabrication

The exact solution-treatment temperature and cooling method should follow the governing standard, section thickness and mill procedure.

Heat treatment after prolonged service cannot necessarily restore all properties without complete metallurgical evaluation.

Cold Forming

314 can be cold formed, but its austenitic structure results in work hardening and springback.

Fabricators should consider:

Larger forming loads than carbon steel

Clean stainless-steel tooling

Suitable bend radii

Intermediate annealing for severe forming

Surface protection

Trial forming for complex components

Hot Forming

Hot forming should use a controlled temperature range followed by the required solution heat treatment where specified.

Overheating, slow cooling or excessive holding can cause grain growth or undesirable phase formation.

Machining

314 is more difficult to machine than free-machining stainless steels.

Recommended practices include:

Rigid machines and workholding

Sharp carbide tooling

Positive cutting geometry

Sufficient cutting depth

Stable feed rate

Suitable cutting fluid

Avoiding tool dwell and surface glazing

314 can be welded using conventional stainless steel processes, including TIG, MIG/MAG, covered-electrode and laser welding.

Preheating is not normally required. However, the alloy has relatively low thermal conductivity and high thermal expansion, increasing the risk of distortion.

Excessive heat input and unsuitable filler metal can also increase hot-cracking risk.

Recommended controls include:

Qualified WPS and PQR

Controlled heat input

Appropriate interpass temperature

Balanced welding sequence

Short tack-weld spacing

Suitable high-temperature filler metal

Removal of surface contamination

Final visual and nondestructive inspection

Published fabrication guidance for 1.4841 states that standard welding processes can be used without routine preheating, but highlights distortion and hot-cracking concerns when heat input is not controlled.

Filler-metal selection must be based on service temperature, atmosphere, joint design, required creep strength and project code.

Dongmeng Group can arrange inspection according to the product form and purchase specification.

Available inspection items include:

Grade and heat-number verification

Chemical composition review

Positive Material Identification

Dimensional and tolerance inspection

Tensile and hardness testing

Surface and edge inspection

Heat-treatment record review

Grain-size examination when specified

Ultrasonic testing for plate or bar when required

Weld inspection for fabricated components

Final drawing inspection

Packaging and traceability verification

EN 10204 3.1 Mill Test Certificate

Certificate of Conformity

Chemical analysis report

Mechanical test report

PMI report

Heat-treatment record

Dimensional inspection report

NDT report

Third-party inspection report

Packing and heat-number list

Testing methods and acceptance criteria should be agreed before production.

314 stainless steel is commonly considered for:

Furnace equipment

Furnace support components

Superheater suspensions

Enameling grates

Hardening and annealing boxes

Heat-treatment trays

High-temperature brackets

Baffle plates

Furnace liners

Kiln components

Burner-support hardware

Heat shields

Valve components

High-temperature flanges

Industrial oven components

Metallurgical-processing equipment

Drawing-based furnace fixtures

Outokumpu specifically lists furnace equipment, superheater suspensions, enameling grates, hardening boxes, valves and flanges as representative applications.

The grade should not be selected from an application name alone. The complete operating atmosphere, load, service temperature, thermal cycle and required lifetime must be evaluated.

Dongmeng Group provides metal material supply, custom processing, quality inspection and international shipment support.

The company website reports:

Five manufacturing centers

Eighteen production lines

Ten warehouses

Sheet, plate, coil, pipe and bar supply capabilities

Material testing and export-logistics support

The company also displays ISO 9001, SGS, CPR and RoHS-related certificates and documentation.

Customers can receive:

Material-standard review before quotation

Multiple product forms

Custom dimensions

Cut-to-size processing

Drawing-based fabrication

MTC and PMI documentation

Third-party inspection support

Heat-number traceability

Export seaworthy packaging

FOB, CFR, CIF and DDP delivery support

For an accurate quotation, please provide:

Grade or UNS designation

Governing material standard

Product form

Thickness or diameter

Width and length

Required quantity

Heat-treatment condition

Surface condition

Mechanical-property requirements

Operating temperature

Furnace or process atmosphere

Fabrication drawing

Inspection requirements

Destination port or delivery address

Company: Dongmeng Group

Email: office@dongmjd.com

Phone / WhatsApp: +86 157 6921 4734

Website: www.cndmmetal.com

The email and telephone number are listed on the current Dongmeng Group contact page.

Is 314 stainless steel the same as 310S?

No. Both are high-chromium and high-nickel heat-resistant austenitic steels, but 314 contains more silicon. The added silicon improves oxidation and scaling resistance under suitable high-temperature conditions.

What is the maximum temperature for 314 stainless steel?

Approximately 1150°C is commonly published as an oxidation-resistance reference in air. It is not a universal design temperature for load-bearing, pressure-containing or chemically aggressive service.

Can 314 operate continuously between 600°C and 900°C?

It can be exposed to this range, but prolonged continuous operation can cause structural embrittlement. The expected exposure time, stress and post-service toughness requirements must be evaluated.

Is 314 suitable for sulfur-containing furnace gas?

Not automatically. Resistance can be limited in oxidizing or reducing sulfurous gases. The atmosphere chemistry and oxygen potential must be reviewed before selection.

Is 314 resistant to carburization?

Its performance depends on whether a protective oxide layer can form. Strongly carburizing or low-oxygen environments require project-specific material evaluation.

Is 314 magnetic?

In the solution-annealed condition, it is generally non-magnetic or only weakly magnetic. Cold working or service-related structural changes may increase magnetic response.

Can 314 stainless steel be welded?

Yes. Conventional welding methods can be used, but heat input, distortion and hot-cracking risk must be controlled through a qualified welding procedure.

Is ASTM A314 the standard for AISI 314 stainless steel?

Not specifically. ASTM A314 is a specification for stainless steel billets and bars intended for forging. The purchase order must separately state the required material grade.

Which product forms are available?

Dongmeng Group can review requirements for sheet, plate, coil, strip, bar, wire and custom components. Pipe and tube availability must be confirmed against the requested standard and mill route.

What information is required for material selection?

Provide the maximum and normal operating temperature, exposure duration, mechanical load, process atmosphere, sulfur or carbon activity, thermal cycling and expected component life.

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