201
Typical reasons to choose 201
- Household appliances
- Kitchen utensils
- Sinks in suitable mild environments
- Doors and window components
- Railroad cars
- High-strength formed sheet components
Stainless steel grade comparison
201 vs 316 Stainless Steel
Compare 201 and 316 stainless steel by chemistry, strength, corrosion resistance, chloride performance, work hardening, weldability, formability, product forms and total procurement priorities.
Quick answer:
choose 201 when high mechanical strength, lower nickel
content and material economy matter in a mild environment.
Choose 316 when the service includes chlorides, more aggressive
chemicals, process equipment or higher corrosion-resistance
requirements. 201 has the strength advantage; 316 has the
corrosion-resistance advantage.
The alloying difference behind the selection decision
201
EN 1.4372 · UNS S20100
- Structure Austenitic
- Typical Cr 16.1%
- Typical Ni 3.6%
- Typical Mn 6.6%
316
EN 1.4401 · UNS S31600
- Structure Austenitic
- Typical Cr 17.2%
- Typical Ni 10.1%
- Typical Mo 2.1%
Typical chemistry basis: Outokumpu Core 201/4372 and Supra 316/4401. Actual heat chemistry must be verified from the governing material standard and MTC.
M03 · Decision summary
201 or 316 stainless steel: which one should you specify?
The choice is mainly a trade-off between mechanical strength and corrosion resistance. 201 uses manganese and nitrogen to reduce nickel content and increase strength. 316 uses higher nickel plus molybdenum to provide substantially greater corrosion resistance, particularly when chlorides or more aggressive process environments are involved.
| Decision factor | 201 stainless steel | 316 stainless steel |
|---|---|---|
| General corrosion resistance | Good for many mild indoor and general-use environments. |
Higher general corrosion resistance for more demanding
process and environmental exposure.
Preferred |
| Chloride resistance | No molybdenum addition and lower basic pitting resistance. |
Approximately 2% molybdenum substantially improves
localized-corrosion resistance compared with 201.
Clear advantage |
| Annealed strength |
Substantially higher proof and tensile strength
in the compared cold-rolled condition.
Strength advantage |
Lower annealed strength but still suitable for a broad range of process equipment. |
| Work hardening |
Strong work-hardening response and high energy
absorption during deformation.
High work hardening |
Austenitic and work-hardening, but generally selected for corrosion performance rather than extreme work-hardening response. |
| Food / pharmaceutical processing | Can suit selected mild-service equipment, subject to hygiene and corrosion requirements. |
Common material family for food, beverage,
pharmaceutical and process equipment.
Broader process use |
| Chemical service | Limited to compatible mild environments. | Used where above-average corrosion resistance is required, including chemical and petrochemical service. |
| Nickel / alloy cost |
Lower nickel content can provide an alloy-cost advantage.
Cost potential |
Higher nickel and molybdenum content normally increase raw-material alloy cost. |
| Supply route | Primarily associated with sheet, coil and strip products. |
Widely available in coil, sheet, plate, strip,
pipe, tube and many process-product forms.
Broader supply |
Selection rule: use 201 when the environment is mild and its higher strength or lower nickel content creates a genuine benefit. Use 316 when corrosion exposure is the controlling design factor. For direct seawater, hot concentrated chlorides or severe chemical service, even standard 316 may require further alloy review.
M04 · Technical data
201 vs 316 stainless steel properties
The tables separate typical manufacturer chemistry from standard mechanical-property values. Mechanical strength should only be compared under the same product form and condition.
Typical chemical composition
Typical values by mass. These are reference values, not guaranteed purchase limits.
| Element / indicator | 201 / S20100 | 316 / S31600 | Selection significance | Reference |
|---|---|---|---|---|
| Carbon, C | 0.05% | 0.04% | Check the governing specification for maximum carbon requirements. | Typical manufacturer chemistry |
| Chromium, Cr | 16.1% | 17.2% | 316 contains somewhat more chromium and also benefits from its molybdenum addition. | Outokumpu reference |
| Nickel, Ni | 3.6% | 10.1% | 201 deliberately reduces nickel by using manganese and nitrogen as additional austenite stabilizers. | Outokumpu reference |
| Manganese, Mn | 6.6% | Standard Cr-Ni-Mo level | High manganese is one of the defining features of Type 201. | Outokumpu reference |
| Molybdenum, Mo | Not intentionally alloyed | 2.1% | The molybdenum addition is a major reason 316 provides better localized-corrosion resistance in chloride-containing environments. | Outokumpu reference |
| Nitrogen, N | 0.08% | 0.04% | Nitrogen contributes to the higher mechanical strength of 201. | Outokumpu reference |
| PRE | Approx. 17 | Approx. 24 | 316 has a substantially higher composition-based pitting-resistance indicator. | PRE = Cr + 3.3Mo + 16N |
Mechanical properties at 20°C
EN 10088-2 cold-rolled coil and sheet reference comparison.
| Property | 201 / 1.4372 | 316 / 1.4401 | Procurement interpretation | Condition |
|---|---|---|---|---|
| 0.2% proof strength | 350 MPa | 240 MPa | 201 provides substantially higher initial yield strength in the compared condition. | Cold-rolled coil / sheet |
| 1.0% proof strength | 380 MPa | 270 MPa | The strength advantage remains clear at the 1% proof level. | Cold-rolled coil / sheet |
| Tensile strength | 680–880 MPa | 530–680 MPa | 201 has the higher tensile-strength range in this comparison. | Cold-rolled coil / sheet |
| Elongation | 45% | 40% | Both remain ductile austenitic grades; 201 shows the higher cited minimum elongation. | EN 10088-2 |
Typical physical properties
Reference physical-property data. Where no published 201 value is shown, the field is deliberately not invented.
| Property | 201 | 316 | Why it matters | Condition |
|---|---|---|---|---|
| Density | 7.8 kg/dm³ | 8.0 kg/dm³ | 201 is slightly lower in density. | Reference value |
| Elastic modulus | 200 GPa | 200 GPa | Elastic stiffness is essentially the same. | 20°C |
| Thermal expansion | Verify for project calculation | 16.0 ×10⁻⁶/K | Use grade-specific approved data for thermal-expansion calculations. | 20–100°C reference |
| Thermal conductivity | 15 W/m·K | 15 W/m·K | The cited room-temperature values are the same. | 20°C |
| Specific heat | Verify for project calculation | 500 J/kg·K | Use controlled material data where thermal analysis is design-critical. | 20°C |
| Electrical resistivity | 0.70 Ω·mm²/m | 0.75 Ω·mm²/m | The electrical-property difference is modest. | 20°C |
| Magnetizable | Normally no* | Normally no* | Both are austenitic; cold work can increase magnetic response. | Solution-annealed reference |
Do not compare only tensile strength:
201 clearly has the higher room-temperature strength in this
cold-rolled comparison, but 316's molybdenum-containing chemistry
provides a much larger corrosion-resistance margin. The correct
material depends on which property controls the application.
M05 · Product form matrix
Product forms and finishes for 201 and 316
201 is strongly associated with economical sheet, coil and strip applications. 316 has a much broader process-industry supply route covering flat products, plate, pipe, tube, bars and fabricated components.
Availability note:
the table describes common commercial supply routes,
not live inventory. Confirm grade, dimensions, finish,
quantity and governing specification in your RFQ.
| Product form / finish | 201 | 316 | Procurement note |
|---|---|---|---|
| Cold-rolled coil & sheet | Common | Common | Major commercial flat-product route for both grades. |
| Hot-rolled coil & sheet | Common | Common | Confirm thickness and mill program. |
| Precision strip | Available | Available | Specify temper, edge, width and tolerance. |
| Quarto plate | Verify source | Common | 316 has a significantly broader plate supply route. |
| Pipe & tube | Application-specific | Widely available | 316 is common in process and corrosion-resistant tubular products. |
| Bars / flanges / valves | Verify source | Widely available | 316 is much more established in process-industry components. |
| 2B / 2D flat finish | Available | Common | Specify surface condition and visual acceptance criteria. |
| Polished / functional finishes | Available | Broad range | 316 is commonly supplied with functional and aesthetic finishes. |
M06 · Grade selector
Use corrosion exposure and strength needs to choose 201 or 316
Check the conditions that control your component. The result is a preliminary screening direction before exact temperature, chemistry, dimensions, fabrication and governing standards are reviewed.
Preliminary result
Start with 316
When corrosion exposure is not fully defined, 316 provides the larger corrosion-resistance margin. 201 becomes attractive when the service is known to be mild and its strength or lower-nickel chemistry creates a useful benefit.
STEP 01
Define the environment
Indoor, outdoor, moisture, chloride, chemical and cleaning exposure.
STEP 02
Define required strength
Yield, tensile strength, wall thickness and structural requirement.
STEP 03
Check fabrication
Drawing, stamping, bending, welding, machining and polishing.
STEP 04
Confirm purchase requirements
Grade, form, dimensions, finish, standard, MTC and inspection.
M08 · Applications & limitations
Where 201 works, where 316 is justified, and where neither grade is enough
201 is most attractive where the environment is mild and mechanical strength or alloy economy matters. 316 earns its higher alloy content where corrosion, process chemistry or chloride exposure controls the design.
316
Typical reasons to choose 316
- Heat exchangers
- Flanges and valves
- Chemical process equipment
- Petrochemical equipment
- Food and beverage equipment
- Pharmaceutical and medical applications
!
Conditions requiring higher-alloy review
- Direct seawater service
- Hot concentrated chlorides
- Persistent stagnant brine
- Strong reducing acid service
- Known 316 pitting or crevice-corrosion failures
- Safety-critical code service requiring another alloy
Fabrication and service comparison
The grade decision should consider both manufacturing behavior and the finished component environment.
| Requirement | 201 | 316 | Selection effect |
|---|---|---|---|
| High room-temperature strength | Higher annealed proof and tensile strength. | Lower annealed strength in the compared condition. | 201 can provide a structural or gauge-reduction advantage where permitted by the design. |
| Forming | Good ductility but stronger work hardening can raise forming loads and springback. | Good general cold formability and extensive process-industry fabrication experience. | Tooling and final geometry can affect the preferred grade. |
| Welding | Weldable using appropriate austenitic stainless procedures. | Good weldability; 316L is frequently considered where intergranular corrosion after welding matters. | Define carbon level, filler, thickness and service environment. |
| Chloride-containing service | Lower localized-corrosion margin. | Molybdenum provides a significant advantage. | 316 normally becomes the stronger starting point. |
| Aggressive chemical cleaning | Needs careful compatibility review. | Broader chemical-service capability, but still chemistry-dependent. | Confirm concentration, temperature and exposure time. |
| Cost-sensitive mild service | Lower nickel chemistry may provide cost advantage. | Higher Ni and Mo normally increase alloy cost. | Do not trade away required corrosion resistance for initial material cost. |
Important:
316 should not be described as completely seawater-proof.
Molybdenum gives it a substantial advantage over 201,
but temperature, chloride concentration, deposits, crevices
and flow conditions can still make standard 316 inadequate.
Material image comparison
Reserved positions for approved product imagery showing each material option. These blocks can be replaced directly with Media Library images later.
Reserved image position
Use an approved product-form or surface-detail image.
Reserved image position
Use an approved product-form or application image.
M10 · Standards & equivalence
201 and 316 stainless steel grade designations
201 and 316 are both austenitic stainless steels, but they are not equivalent materials. Their chromium, nickel, manganese, nitrogen and molybdenum contents create very different strength and corrosion behavior.
| Designation system | 201 | 316 | Procurement note |
|---|---|---|---|
| ASTM / AISI type | 201 | 316 | Common North American grade names. |
| UNS | S20100 | S31600 | Use UNS where exact grade identity is important. |
| EN material number | 1.4372 | 1.4401 | European material numbers used in this comparison. |
| Alloy family | Low-nickel Cr-Mn-N austenitic | Cr-Ni-Mo austenitic | The alloy families are designed around different performance and cost priorities. |
| Microstructure | Austenitic | Austenitic | Both have high ductility and low magnetic response in the annealed state. |
| Common related variant | 201LN / S20153 | 316L / S31603 | These are separate grades and should not be automatically substituted for 201 or 316. |
ASTM A240/A240M
Common specification family for stainless steel
sheet, strip and plate.
EN 10088-2
Technical delivery conditions for corrosion-resistant
stainless steel flat products.
ASTM A312/A312M
Common specification route for austenitic stainless
steel pipe, where the requested grade is included.
ASTM A269/A269M
Common tubing specification family for general-service
austenitic stainless tubing.
Product standards must be checked separately. A grade may be available under one specification and not another. Always define the required material grade, product form, condition, dimensions, finish and certificate level.
M11 · Direct answers
201 vs 316 stainless steel FAQ
Direct answers to the main purchasing questions behind the 201 versus 316 stainless steel decision.
What is the main difference between 201 and 316 stainless steel?
201 is a low-nickel Cr-Mn-N austenitic stainless steel with relatively high mechanical strength. 316 is a Cr-Ni-Mo austenitic stainless steel containing approximately 2% molybdenum for greater corrosion resistance, especially against localized attack in many chloride-containing environments.
Which has better corrosion resistance, 201 or 316?
316 has a substantial advantage. Its chromium, nickel and molybdenum chemistry gives it a PRE of about 24 compared with about 17 for 201 in the referenced manufacturer data.
Which is stronger, 201 or 316?
In the compared EN cold-rolled condition, 201 has the higher strength. Its cited 0.2% proof strength is approximately 350 MPa versus 240 MPa for 316, while its tensile range is approximately 680–880 MPa versus 530–680 MPa.
Why is molybdenum important in 316 stainless steel?
Molybdenum increases resistance to localized corrosion, particularly pitting and crevice corrosion in many chloride-containing environments. It is one of the main reasons 316 is selected over non-molybdenum austenitic grades.
Is 201 stainless steel cheaper than 316?
201 generally has a lower alloy-cost structure because it contains much less nickel and no intentional molybdenum addition. Actual purchase price still depends on market conditions, product form, finish, dimensions, processing and quantity.
Can 201 replace 316 stainless steel?
Only in an application where the environment is sufficiently mild. If 316 was specified because of chlorides, process chemistry or corrosion history, replacing it with 201 can substantially reduce the corrosion-resistance margin.
Is 316 stainless steel suitable for seawater?
316 provides much better chloride resistance than 201, but it should not be treated as universally immune to seawater. Temperature, stagnant conditions, crevices, deposits and chloride concentration can make a higher-alloy grade necessary.
Are 201 and 316 stainless steel magnetic?
Both are austenitic grades and normally have low magnetic response in a solution-annealed condition. Cold working can create deformation-induced martensite and increase magnetic response, particularly in metastable austenitic grades such as 201.
Should I choose 316 or 316L for welded equipment?
316L is the low-carbon variant and is often preferred when welding conditions make intergranular corrosion a concern. The correct choice depends on section thickness, welding procedure, design code and service environment.
M13 · Sources & technical review
Technical basis for this 201 vs 316 comparison
Numeric values are separated by grade, product condition and published source. Typical mill chemistry is not presented as a guaranteed purchase specification, and no live inventory or fixed price claim is implied.
Primary technical references
- Outokumpu Core Range Datasheet Core 201/4372 chemistry, EN mechanical properties, physical properties, applications and product forms.
- Outokumpu Core 201/4372 Product Information Low-nickel Cr-Mn alloy description, work-hardening behavior, corrosion guidance and typical applications.
- Outokumpu Supra Range Datasheet Supra 316/4401 chemistry, PRE, mechanical and physical-property data, applications and product forms.
- Outokumpu Supra 316/4401 Product Information Molybdenum-alloyed Cr-Ni-Mo grade description and higher-corrosion-resistance application guidance.
- EN 10088-2 Mechanical-property basis for the cited cold-rolled flat-product values.
- ASTM A240/A240M North American specification reference for stainless steel sheet, strip and plate.
Page accountability
Author
Stainless Steel Market Technical Editorial Team
Comparison structured around grade selection, procurement decisions and published technical data.
Technical review
Stainless Steel Market Materials Review
Review scope includes chemistry, mechanical properties, corrosion resistance, chloride exposure, fabrication and product-form selection.
Reviewed
23 September 2026
Technical data checked against current published manufacturer and standards-reference information.
Update log
2026-09-23 — Initial T09 201 vs 316 comparison prepared with technical tables, decision matrix, interactive selector, FAQ and procurement CTA routing.
M14 · Ask an engineer
Still deciding between 201 and 316?
Send the actual environment, required strength, product form and fabrication details. The material can then be reviewed against corrosion risk, mechanical requirements and total procurement cost.
- 201, 316 or alternative grade under consideration
- Sheet, coil, strip, plate, pipe, tube or other product form
- Thickness, width, diameter, length and tolerances
- Required yield and tensile strength
- Indoor, outdoor, wet or process environment
- Chloride concentration or salt exposure where applicable
- Process chemicals, cleaning agents and operating temperature
- Stamping, bending, deep drawing, welding or machining requirements
- Applicable ASTM, ASME, EN or customer specification
- Quantity, destination, delivery date, MTC and inspection requirements
Send your material requirement
For faster technical review, include the environment, chloride exposure, required strength, fabrication process, product form, dimensions, standard, finish and quantity.