Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of 316 stainless steel sheet 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.

 

 

 

316 stainless steel is a chromium-nickel-molybdenum austenitic stainless steel identified as UNS S31600 and EN 1.4401.

The addition of approximately 2–3% molybdenum gives 316 better resistance than standard 304 stainless steel to pitting and crevice corrosion in many chloride-bearing environments.

Grade 316 also provides good formability, weldability, toughness and surface-finishing performance. It can be cut, bent, roll formed, welded, polished and fabricated into industrial components.

Typical applications include:

Chemical processing equipment

Food and beverage machinery

Heat exchangers

Laboratory equipment

Water treatment equipment

Coastal architectural components

Boat fittings and marine hardware

Industrial tanks and enclosures

Pharmaceutical production equipment

Filtration screens and machinery components

 

Procurement Item	Available Specification
Product	316 stainless steel sheet
Material family	Molybdenum-alloyed austenitic stainless steel
Grade	AISI 316
UNS designation	UNS S31600
EN designation	EN 1.4401 / X5CrNiMo17-12-2
JIS designation	SUS 316
Main standards	ASTM A240, ASME SA240, EN 10088-2, JIS G4304, JIS G4305
Production route	Cold rolled or hot rolled
Thickness	0.30–6.00 mm or customized
Width	1000, 1219, 1250, 1500 and 2000 mm or customized
Length	2000, 2438, 2500, 3000 and 6000 mm or cut to length
Surface finishes	No.1, 2B, 2D, BA, No.4, hairline, satin and mirror
Edge	Mill edge, slit edge, sheared edge or deburred edge
Surface protection	Paper interleaving, PE film, PVC film or laser film
Processing	Cutting, slitting, shearing, bending, polishing, perforating and custom fabrication
Material documentation	EN 10204 3.1 Mill Test Certificate
Optional inspection	PMI, dimensional inspection and independent third-party inspection
Packaging	Standard export seaworthy packing or project-specific packing
Trade terms	EXW, FOB, CFR or CIF
MOQ	Confirmed according to grade, thickness, finish, size and stock status
Lead time	Confirmed after specification, processing and inspection requirements are reviewed

 

316 is commonly described as a marine-grade stainless steel, but it is not completely immune to seawater corrosion.

Actual performance depends on:

Chloride concentration

Operating temperature

Surface finish

Crevice geometry

Oxygen availability

Chemical concentration

Cleaning and maintenance

Welding quality

Surface contamination

Contact with dissimilar metals

For continuous seawater immersion, warm chloride solutions, stagnant conditions or severe crevices, a duplex or higher-alloy stainless steel may be more suitable. Send Dongmeng Group the operating conditions for a preliminary material review.

 

 

System	Grade or Designation
AISI / ASTM type	316
UNS	S31600
EN material number	1.4401
EN designation	X5CrNiMo17-12-2
JIS	SUS 316
ASTM flat-product standard	ASTM A240 / A240M
ASME flat-product standard	ASME SA240 / SA240M
European flat-product standard	EN 10088-2
Japanese hot-rolled standard	JIS G4304
Japanese cold-rolled standard	JIS G4305

Grade equivalents should be treated as technically comparable designations rather than automatic contractual substitutes. The purchase order should state the required governing standard.

 

Element	ASTM A240 Type 316 Requirement
Carbon, C	≤ 0.08%
Manganese, Mn	≤ 2.00%
Silicon, Si	≤ 0.75%
Phosphorus, P	≤ 0.045%
Sulfur, S	≤ 0.030%
Chromium, Cr	16.00–18.00%
Nickel, Ni	10.00–14.00%
Molybdenum, Mo	2.00–3.00%
Nitrogen, N	≤ 0.10%

 

The actual heat analysis should be verified against the Mill Test Certificate supplied with the production batch.

Chemical composition should not be confirmed only through a handheld alloy analyser when carbon content or full specification compliance is critical. PMI is useful for grade verification, while the MTC and appropriate laboratory testing provide the complete composition record.

The following values apply to annealed flat-rolled Type 316 products under the referenced ASTM specification.

Property	ASTM A240 Type 316 Requirement
Tensile strength	≥ 515 MPa
0.2% proof yield strength	≥ 205 MPa
Elongation in 50 mm	≥ 40%
Rockwell hardness	≤ 95 HRB
Brinell hardness	≤ 217 HB

Mechanical requirements can differ for bars, pipes, castings, cold-worked products and fabricated components. Always specify the required product standard in the purchase order.

Property	Typical Value
Density	Approximately 8.0 g/cm³
Elastic modulus	Approximately 193 GPa
Thermal conductivity at 100°C	Approximately 16.3 W/m·K
Specific heat	Approximately 500 J/kg·K
Magnetic response	Generally low in the annealed condition

Cold working, forming and welding can increase the magnetic response of austenitic stainless steel. Magnetic testing alone should not be used to confirm whether a sheet is Grade 316.

Selection Factor	304	316	316L	Duplex 2205
Structure	Austenitic	Austenitic	Austenitic	Austenitic-ferritic duplex
Molybdenum	Normally none	2–3%	2–3%	Approximately 3%
Maximum carbon	0.08%	0.08%	0.03%	Low
Chloride pitting resistance	Lower	Higher than 304	Similar to 316	Generally higher than 316
General formability	Excellent	Very good	Very good	Lower than 316
Weldability	Excellent	Good	Preferred for many welded fabrications	Good with controlled procedures
Weld sensitisation risk	Higher than 304L	Higher than 316L	Reduced due to lower carbon	Different duplex welding controls apply
Strength	Standard austenitic level	Standard austenitic level	Standard austenitic level	Significantly higher
Typical choice	Mild indoor and general environments	Chloride-bearing and chemical environments	Welded equipment in corrosive service	Higher loads and more severe chloride service
Procurement concern	Do not use where chloride exposure requires 316	Heavy welded sections require engineering review	Confirm dual certification and operating temperature	Welding procedure and phase balance require control

Choose 304 When

The environment is relatively mild.

Chloride exposure is limited.

General fabrication and lower material cost are priorities.

Molybdenum-bearing stainless steel is not required.

Choose 316 When

Better pitting and crevice corrosion resistance than 304 is required.

The component is used in coastal, food-processing or chemical environments.

Grade 316 is specified by the project or customer.

Welding exposure is limited or properly controlled.

Choose 316L When

Extensive welding is required.

The welded component will operate in a corrosive environment.

Post-weld solution annealing is not practical.

Lower carbon content is specified to reduce sensitisation risk.

Consider Duplex 2205 When

Higher mechanical strength is required.

The environment contains higher chloride levels.

Resistance to chloride stress corrosion cracking is a major design consideration.

The project can accommodate more controlled forming and welding procedures.

Material selection must be based on the complete service environment rather than grade name alone.

Service Condition	Initial Material Direction	Procurement Note
Indoor equipment with limited chloride exposure	304 may be sufficient	Compare lifecycle requirement and cleaning chemicals
Food equipment exposed to salt or aggressive cleaning	316 or 316L	Specify finish, weld treatment and cleaning method
Welded chemical tanks	316L is commonly preferred	State chemical, concentration, temperature and welding standard
Coastal architectural panels	316 or 316L	Specify smooth finish, drainage, cleaning and grain direction
Boat fittings above the splash zone	316 or 316L	Avoid crevices and carbon-steel contamination
Continuous seawater immersion	Engineering review required	Consider duplex or higher-alloy grades
Warm chloride-bearing water	Engineering review required	316 may be insufficient at higher temperature
Heat exchangers	316, 316L or higher alloy	State both fluid compositions, pressure and temperature
Pharmaceutical equipment	Often 316L	Specify surface roughness, weld finish and cleaning validation
High-temperature structural service	316H or 316Ti may be considered	Confirm design code and temperature range

Dongmeng Group should be provided with the actual fluid, concentration, temperature, pressure, cleaning process and design life whenever corrosion performance is critical.

Finish	Production Description	Appearance	Typical B2B Applications	Details to Specify
No.1	Hot rolled, annealed and pickled	Dull and comparatively rough	Tanks, industrial equipment and heavy fabrication	Pickled condition, allowable surface marks
2D	Cold rolled, annealed and pickled	Smooth matte finish	Engineering components and further processing	Thickness, flatness and surface acceptance
2B	Cold rolled, annealed, pickled and skin passed	Smooth grey reflective finish	Food equipment, tanks, enclosures and fabrication	Film, surface defects and grain requirement
BA	Bright annealed in a controlled atmosphere	Brighter and more reflective than 2B	Appliance panels and decorative components	Reflectivity, film and visual sample
No.4	Mechanically polished	Directional brushed finish	Food equipment, wall panels and machinery covers	Abrasive grit, grain direction and Ra
Hairline	Continuous linear polish	Fine directional lines	Elevators, interiors and architectural panels	Grain direction and approved sample
Mirror / No.8	Progressively polished and buffed	Highly reflective	Interior decoration and display panels	Mirror level, distortion, film and sample

"2B," "No.4," "hairline" or "mirror" alone may not be sufficient for appearance-critical orders.

The purchase specification should also state:

Required roughness or polishing grit

Grain direction

Acceptable colour variation

Surface defect acceptance

One-side or two-side finish

Protective film type and thickness

Laser-film requirement

Whether an approved sample is required

Whether sheets in one project must come from the same production batch

For architectural or decorative projects, sample approval before mass production is strongly recommended.

Thickness	Common Widths	Common Lengths	Typical Use
0.30–0.50 mm	1000, 1219, 1250 mm	2000, 2438, 2500 mm	Liners, covers and light fabrication
0.60–1.00 mm	1000, 1219, 1250, 1500 mm	2000, 2438, 2500, 3000 mm	Panels, enclosures and equipment covers
1.20–1.50 mm	1219, 1250, 1500 mm	2438, 2500, 3000, 6000 mm	Food equipment and fabricated panels
2.00–3.00 mm	1219, 1500, 2000 mm	2438, 3000, 6000 mm	Tanks, chemical equipment and machinery
4.00–6.00 mm	1500 or 2000 mm	3000 or 6000 mm	Heavy fabrication and industrial components

Availability depends on the selected finish, mill source, quantity and current stock. Non-standard widths and lengths should be confirmed before the final quotation.

Dongmeng Group can supply standard sheets or processed components according to drawings and purchase specifications.

Processing Service	Information Required from Buyer	Main Control Point
Cut to length	Final dimensions and quantity	Length, squareness and edge condition
Slitting	Strip width, coil ID and quantity	Width tolerance, burr and camber
Shearing	Sheet dimensions	Squareness, burr and edge deformation
Laser cutting	CAD drawing and tolerance	Heat tint, dross, edge quality and film
Bending	Drawing, radius and grain direction	Springback, tooling marks and bend cracking
Perforating	Hole size, pitch and pattern	Hole position and sheet distortion
No.4 polishing	Grit, direction and sample	Roughness and visual consistency
Hairline finishing	Line pattern and direction	Pattern uniformity
Mirror polishing	Required mirror grade	Reflectivity, distortion and scratches
Protective film	Film type and removal conditions	Adhesion, residue and laser compatibility
Custom fabrication	Complete drawing and inspection plan	Tolerance stack-up, weld treatment and final finish

For fabricated parts, submit PDF, DWG, DXF, STEP or another agreed drawing format together with dimensional tolerances and surface requirements.

Dongmeng Group does not recommend applying one universal tolerance to every sheet thickness and processing method.

Tolerance should be agreed according to:

Governing material standard

Nominal thickness

Sheet width and length

Cold-rolled or hot-rolled condition

Mill edge or slit edge

Cut-to-length method

Flatness requirement

Final fabrication process

End-use assembly tolerance

Inspection Characteristic	What the Purchase Order Should State
Thickness	Nominal thickness and applicable standard tolerance
Width	Standard mill tolerance or project-specific tolerance
Length	Standard cut length or agreed cut-to-length tolerance
Flatness	Standard requirement or maximum deviation
Squareness	Maximum diagonal or angular deviation
Edge condition	Mill, slit, sheared, deburred or rounded
Burr	Maximum acceptable burr height
Surface	Reference finish and defect acceptance
Grain direction	Parallel to length, parallel to width or as drawing
Protective film	Film type, side and removal requirement

Project-specific tolerances should be reviewed before the order is accepted. Tighter tolerances can affect processing route, yield, cost and lead time. 

 

Quality control should be linked directly to the agreed purchase specification.

Inspection Stage	Typical Verification
Material document review	Grade, heat number, standard and chemical composition
Incoming material identification	Grade marking and heat-number traceability
PMI, when requested	Verification of alloy family and molybdenum content
Dimensional inspection	Thickness, width, length and processed dimensions
Flatness and squareness	Verification against agreed tolerances
Surface inspection	Scratches, pits, dents, stains and finish consistency
Edge inspection	Burr, damage and edge deformation
Protective-film inspection	Film type, adhesion and surface coverage
Final quantity check	Piece count, bundle count and weight
Packing inspection	Waterproofing, edge protection, labels and strapping
Pre-shipment inspection	Documentation and finished-product verification

 

Document	Availability
EN 10204 3.1 Mill Test Certificate	Available according to the supplied material
Chemical composition record	Included in the applicable MTC
Mechanical property record	Included where required by the material standard
Dimensional inspection report	Available when specified
PMI report	Available upon request
Surface inspection record	Available according to order requirements
Packing list	Standard export document
Certificate of origin	Available according to shipment requirements
Third-party inspection report	SGS, BV, TÜV or another agreed agency upon request

 Third-party inspection scope, witness points, acceptance criteria and associated cost should be confirmed before production.

 

Confirmation Item	Why It Matters
Exact grade and standard	Prevents confusion between 316, 316L and dual-certified material
Dimensions and tolerance	Determines rolling, cutting and inspection route
Required finish	Controls appearance, roughness and downstream fabrication
Grain direction	Important for decorative appearance and bending
Protective film	Prevents scratching and must suit the cutting process
Quantity and acceptable overrun	Affects production yield and final shipment quantity
MTC and inspection scope	Ensures documents match the buyer's quality plan
Packing method	Reduces edge damage, moisture exposure and scratches
Incoterm and destination	Determines quotation basis and export arrangement
Delivery schedule	Confirms stock, processing and inspection time

This confirmation process helps prevent specification misunderstandings before material is processed or shipped.

Packaging is selected according to finish, dimensions, processing condition and shipment method.

Product Condition	Recommended Protection
No.1 industrial sheets	Waterproof wrapping, edge protectors, straps and pallet
2B sheets	Waterproof paper, surface protection and reinforced pallet
BA sheets	Paper interleaving or protective film and scratch protection
No.4 or hairline sheets	Protective film, grain-direction labels and rigid pallet
Mirror sheets	Laser film, paper interleaving and reinforced wooden case
Cut components	Layer separation, part identification and secure boxes
LCL shipment	Stronger external protection against repeated handling
FCL shipment	Pallet securing and container-loading inspection

Standard export packaging may include waterproof paper, PE wrapping, corner protection, steel straps, wooden pallets or wooden cases.

Any special requirements for ISPM 15 wood treatment, lifting points, maximum bundle weight, barcode labels or project marks should be included in the purchase order.

A nominal density of 8.0 g/cm³ can be used for estimating sheet weight.

Metric formula:

Weight in kg = Thickness in mm × Width in mm × Length in mm × 0.000008

Example

A 2.0 mm × 1219 mm × 2438 mm sheet has an approximate theoretical weight of:

2.0 × 1219 × 2438 × 0.000008
= approximately 47.5 kg

The final invoiced or shipping weight may differ because of dimensional tolerance, cutting loss, protective film and packaging.

Dongmeng Group does not recommend using a fixed price difference between 304 and 316 because stainless steel prices change with alloy costs and order specifications.

Price Factor	Purchasing Impact
Nickel and molybdenum market conditions	Major influence on the base material price
Grade	316, 316L and dual-certified material may be priced differently
Thickness	Thin gauges may require additional rolling control
Width and length	Non-standard dimensions may affect yield
Surface finish	Polishing, mirror finishing and film add processing cost
Quantity	Affects production efficiency and freight allocation
Cutting and fabrication	Adds machine time, programming and inspection
Tolerance	Tight tolerances may require additional processing
Inspection	PMI and third-party inspection add cost
Documentation	Special certificates may require advance arrangement
Packing	Decorative sheets and LCL shipments require stronger protection
Trade term	EXW, FOB, CFR and CIF include different cost elements
Destination	Ocean freight, local charges and container selection vary

For an accurate quotation, provide the complete specification rather than requesting only a price per kilogram.

Please provide the following information:

Required RFQ Information	Example
Grade	AISI 316 / UNS S31600
Standard	ASTM A240
Thickness	2.0 mm
Width	1219 mm
Length	2438 mm
Surface	2B
Quantity	10 metric tons
Edge	Slit edge
Film	One-side laser film
Processing	Cut to size
Tolerance	According to ASTM A480 or drawing
Documentation	EN 10204 3.1 MTC and PMI report
Inspection	SGS pre-shipment inspection
Packing	Export seaworthy pallet
Trade term	CIF
Destination	Buyer's destination port
Application	Food-processing equipment

A complete RFQ allows Dongmeng Group to confirm material availability, production route, processing, inspection, packing and delivery more accurately.

Specification-Based Quotations

Quotations are prepared according to the actual grade, dimensions, surface, quantity, tolerance, processing and inspection scope rather than a generic price list.

Multiple Processing Options

Standard sheets can be supplied together with cutting, slitting, polishing, bending, perforation, protective film and customized fabrication support.

Material Traceability

EN 10204 3.1 Mill Test Certificates and heat-number identification can be supplied according to the order and material source.

Inspection Support

PMI, dimensional inspection and independent third-party inspection can be arranged when included in the purchase specification.

Export-Oriented Packaging

Packing can be adapted for industrial sheets, polished sheets, cut components, LCL shipments and full-container shipments.

Technical Communication

Dongmeng Group helps buyers review grade, standard, finish, dimensions, tolerance, documentation and packaging before production.

 

Is 316 stainless steel better than 304?

316 provides better resistance than 304 to pitting and crevice corrosion in many chloride-bearing environments because it contains molybdenum.

However, 304 may remain the more economical choice for mild environments where chloride exposure is limited. Material selection should be based on the actual service conditions.

What is the difference between 316 and 316L?

316L has a lower maximum carbon content than standard 316.

The lower carbon content reduces the risk of carbide precipitation during welding and generally makes 316L preferable for welded components that will operate in corrosive environments.

Is 316 stainless steel completely resistant to seawater?

No. Grade 316 can experience staining, pitting and crevice corrosion in seawater, particularly under warm, stagnant or poorly maintained conditions.

For continuous immersion or severe chloride exposure, provide the operating conditions so that 2205, 2507, 904L or another alloy can be considered.

Is 316 stainless steel magnetic?

Annealed 316 is generally considered to have a low magnetic response. Cold working, bending and welding can produce a measurable magnetic response.

Magnetism is not a reliable method for confirming the exact stainless steel grade.

Can Dongmeng Group provide an EN 10204 3.1 certificate?

Yes. An EN 10204 3.1 Mill Test Certificate can be supplied according to the material source and purchase order.

State the document requirement before order confirmation.

Can you provide PMI testing?

PMI can be arranged for grade verification. The required testing percentage, locations, acceptance criteria and report format should be agreed before production.

PMI does not replace every test required by a full material specification.

Can 316 sheet be cut to custom sizes?

Yes. Cut-to-length, shearing, slitting, laser cutting and other processing options are available according to the drawing and tolerance requirements.

What finish should be used for food equipment?

2B and mechanically polished finishes are commonly used, but grade and finish alone do not guarantee suitability.

The buyer should also specify surface roughness, weld finishing, cleanability, fabrication method, cleaning chemicals and applicable hygiene regulations.

Is 316 the same as food-grade or medical-grade stainless steel?

"Food grade" and "medical grade" are application descriptions rather than complete material specifications.

Suitability depends on the exact grade, surface, fabrication, cleaning process, design, documentation and applicable regulatory requirements.

Can 316 sheet be welded?

Yes. Grade 316 has good weldability.

For extensive welding or heavy welded sections in corrosive service, 316L may be preferred. Welding procedures, heat input, filler material, weld cleaning and passivation should be controlled.

What information is needed for a quotation?

Provide grade, standard, thickness, width, length, finish, quantity, processing, tolerance, film, inspection, packing, trade term and destination.

Drawings should be supplied for processed components.

Looking for an ASTM A240 316 stainless steel sheet manufacturer for a distributor order, industrial project or custom fabrication requirement?

Send Dongmeng Group your material specification, bill of quantities or drawings. Our team will review the technical and commercial requirements before preparing the quotation.

Email: office@dongmjd.com
WhatsApp / Phone: +86 157 6921 4734

 

 

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