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Stainless steel grade comparison

304 vs 410 Stainless Steel

Compare 304 and 410 stainless steel by microstructure, chemistry, corrosion resistance, hardness, heat treatment, magnetism, formability, welding, machining and product form.

Quick answer: choose 304 when corrosion resistance, ductility, forming and straightforward welding are the main requirements. Choose 410 when a heat-treatable stainless steel is required to provide higher hardness, wear resistance and mechanical strength in a comparatively mild corrosion environment.

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Corrosion & fabrication vs hardness & heat treatment

304

EN 1.4301 · UNS S30400

Structure Austenitic
Typical C 0.04%
Typical Cr 18.1%
Typical Ni 8.1%
Heat hardenable No
Main advantage Corrosion / forming

410

EN 1.4006 · UNS S41000

Structure Martensitic
Nominal C 0.13%
Nominal Cr 12.5%
Nominal Ni 0.3%
Heat hardenable Yes
Main advantage Hardness / wear

304 values are typical manufacturer chemistry. 410 values are nominal manufacturer chemistry. Final composition and properties must follow the governing product standard and MTC.

M03 · Decision summary

304 or 410 stainless steel: which one should you specify?

This is primarily a microstructure and processing decision. 304 remains a ductile austenitic stainless steel and cannot be hardened by conventional quench-and-temper heat treatment. 410 is martensitic and can be heat treated to substantially change its hardness and mechanical performance.

Decision first: start with 304 when corrosion resistance, formability and weldability control the component. Start with 410 when hardness, wear resistance or heat-treated strength controls the design and the environment is not severely corrosive.

Choose 304

Corrosion resistance and fabrication come first

Best for Kitchen equipment, tanks, food equipment, cladding, deep-formed parts and general welded fabrication.

Not recommended for Parts requiring high hardness from quenching and tempering.

Key trade-off Better corrosion and fabrication behavior, but it cannot develop 410-style martensitic hardness through heat treatment.

Alternative 316L where chloride corrosion resistance needs to be increased.

Choose 410

Hardness, strength and wear resistance come first

Best for Highly stressed components, cutlery, flat springs, refinery components and wear-sensitive mechanical parts.

Not recommended for Severe chloride exposure or fabrication where simple welding is critical.

Key trade-off Heat treatment can provide high hardness and strength, but corrosion resistance, ductility and welding simplicity are lower than 304.

Alternative 420 or another martensitic grade if a higher hardness range is required; 17-4PH where higher strength and corrosion performance must coexist.

Reconsider both

The service environment exceeds either grade's strengths

Review when Warm seawater, concentrated chlorides, aggressive acids, critical low-temperature impact or high-temperature creep service applies.

Why 304 is not a high-hardness heat-treatable grade, while 410 has lower corrosion resistance and toughness.

Alternative 316L, duplex, precipitation-hardening, higher martensitic or heat-resistant alloys depending on the failure mode.

Engineering reversal condition: the heat-treatment condition of 410 must be known. “410 stainless steel” without annealed, hardened, tempered, hardness or mechanical-property requirements is often not enough to define the finished component.

M04 · Technical data

304 vs 410 stainless steel properties

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Unlike two closely related austenitic grades, 304 and 410 must be compared by microstructure and delivery condition. Annealed 410 data does not describe a hardened-and-tempered 410 component.

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Typical / nominal chemical composition

304 values are typical Outokumpu values. 410 values are nominal Alleima values. The product specification and MTC control final acceptance.

Element / feature	304 / S30400	410 / S41000	Selection significance	Condition / source basis
Carbon, C	0.04%	0.13%	Higher carbon supports 410 martensitic hardenability.	Typical / nominal manufacturer values
Chromium, Cr	18.1%	12.5%	304's higher chromium contributes to its stronger general corrosion performance.	Typical / nominal manufacturer values
Nickel, Ni	8.1%	0.3%	304 uses substantial nickel to stabilize its austenitic structure.	Typical / nominal manufacturer values
Molybdenum, Mo	No intentional addition	No intentional addition	Neither is a molybdenum-alloyed chloride grade such as 316L.	Grade family comparison
Microstructure	Austenitic	Martensitic	This drives major differences in heat treatment, hardness, magnetism and fabrication.	Grade classification

ASTM A240 room-temperature reference

Annealed / specification-condition minimums. These values must not be used to represent hardened-and-tempered 410.

Property	304 / S30400	410 / S41000	Unit	Selection meaning
Minimum 0.2% yield strength	205	205	MPa	Similar specification minimum in this reference condition.
Minimum tensile strength	515	450	MPa	Annealed 410 does not show its heat-treated strength potential.
Minimum elongation	40	20	%	304 has much higher ductility in this comparison.
Maximum HRB reference	92	96	HRB	Specification-condition hardness only; hardened 410 requires separate heat-treatment data.

304 cold-rolled EN 10088-2 reference

Separate reference showing a defined 304 cold-rolled condition.

Property	304 value	Unit	Condition	Source basis
Rp0.2	230	MPa	Cold rolled coil / sheet	EN 10088-2 manufacturer reference
Rp1.0	260	MPa	Cold rolled coil / sheet	EN 10088-2 manufacturer reference
Rm	540–750	MPa	Cold rolled coil / sheet	EN 10088-2 manufacturer reference
Minimum elongation	45	%	Cold rolled coil / sheet	EN 10088-2 manufacturer reference

Heat-treatment response

410 processing temperatures below are published supplier guidance. Exact cycles depend on section size, target properties and product form.

Process	304	410	410 reference range	Engineering effect
Conventional hardening	Not hardenable by quench and temper	Hardenable	925–1010°C hardening reference	410 can transform to a hard martensitic structure.
Annealing	Solution anneal by applicable specification	Annealable	815–900°C supplier guidance	Annealed 410 is softer and easier to machine / form.
Stress relieving	Application-specific	Applicable	150–425°C supplier guidance	Used after appropriate processing where required.
Tempering	Not used to develop martensitic hardness	Critical property-control step	590–760°C published supplier guidance	Target hardness, strength and toughness require a defined heat-treatment route.

Typical physical properties

410 metric values are rounded conversions from published imperial supplier data.

Property	304	410	Reference condition	Engineering significance
Density	7.9 kg/dm³	≈7.7 kg/dm³	Typical reference	410 is slightly less dense.
Elastic modulus	200 GPa	≈214 GPa	Room temperature	410 has a slightly higher cited modulus.
Thermal expansion	16.0 ×10⁻⁶/K	≈10.5 ×10⁻⁶/K	Approx. 20–100°C	410 expands less for the same temperature change.
Thermal conductivity	15 W/m·K	≈30 W/m·K	Room-temperature reference	410 conducts heat more readily in the cited data.
Specific heat	500 J/kg·K	≈460 J/kg·K	Room-temperature reference	Moderate difference.
Electrical resistivity	0.73 Ω·mm²/m	≈0.60 Ω·mm²/m	Room-temperature reference	Different alloy electrical response.
Magnetic response	Normally low in annealed condition; can increase after cold work	Ferromagnetic	General grade behavior	Important for magnetic components and sensing systems.

Most important procurement rule: never compare an annealed 410 certificate with a hardened-and-tempered design requirement as though they are the same material condition. For 410, specify both the grade and the required heat-treatment / hardness condition.

M05 · Product form matrix

Product forms and supply routes for 304 and 410

304 has an exceptionally broad flat-product and fabrication supply chain. 410 is available in multiple wrought forms, but purchasing must also define the required annealed or heat-treated condition.

Availability note: this matrix is not live inventory. Confirm actual grade, product form, dimensions, surface condition, heat-treatment state and certification before placing an order.

Product / route	304	410	Status	Procurement note
Sheet / strip	Typical product form	Available by supplier program	Confirm availability	For 410, specify annealed or required final mechanical condition.
Plate	Typical product form	Published ASTM product route	Confirm availability	410 plate fabrication may require subsequent heat-treatment planning.
Cold-rolled coil	Key product route	Supplier-dependent	304 typical	304 supports broad finishing and forming routes.
Bar / rounds	Widely produced alloy family	Established 410 product route	Product-standard dependent	For 410 bar, define hardness / heat treatment and ASTM A276 or A479 where applicable.
Billet	Supplier-dependent	Published 410 route	Project-specific	Useful for forging, re-rolling and subsequent heat-treated components.
Wire / rod	Supplier-dependent	Published 410 product family	Confirm availability	Confirm ASTM A580 or application-specific wire requirements.
Hardened & tempered component	Not a 304 heat-treatment route	Core 410 capability	Property-specific	Order to final hardness, strength and heat-treatment requirements, not grade alone.
Deep-formed fabrication	Strong application route	More limited	Application-specific	304's austenitic ductility is normally more favorable for demanding forming.

M08 · Applications & limitations

Where 304 works, where 410 is justified, and where another grade is required

Discuss Your Application

304 is primarily a corrosion-resistant fabrication alloy. 410 is a heat-treatable mechanical alloy that combines moderate corrosion resistance with hardness and strength.

304

Typical reasons to choose 304

Kitchen equipment
Household appliances
Food and beverage equipment
Storage tanks
Architectural cladding
Handrails and fittings
General formed and welded parts

410

Typical reasons to choose 410

Flat springs
Cutlery
Refinery equipment
Petrochemical components
Mineral-processing components
Fasteners and mechanical parts
Heat-treated wear components

Review

Conditions that may require another alloy

Seawater or severe chloride service
Strong reducing acids
Extreme wear requiring higher hardness
Critical low-temperature impact loading
Complex welded martensitic assemblies
Severe chloride SCC environments
High-temperature creep-controlled service

Failure modes that can reverse the recommendation

410 weld and heat-affected-zone cracking

410 can transform to hard martensite during welding and cooling. This increases cracking risk and can make preheat, filler selection and post-weld heat treatment important.

Incorrect 410 heat treatment

The final strength, hardness and toughness of 410 depend heavily on hardening and tempering practice. Incorrect cycles can create an unacceptable property balance.

410 corrosion in aggressive environments

410 has substantially less chromium and nickel than 304 and is intended for environments where corrosion is comparatively mild. Do not select it solely because both grades are called stainless steel.

304 chloride pitting

304 has significantly better general corrosion behavior than 410, but it is not a molybdenum-bearing chloride grade. More severe chloride exposure can require 316L or duplex stainless steel.

304 chloride stress-corrosion cracking

304 remains an austenitic stainless steel and can suffer chloride SCC when chloride concentration, temperature and tensile stress reach a critical combination.

410 low-temperature toughness

Martensitic stainless steels can lose ductility at low temperature. Critical impact applications should therefore be evaluated using the actual heat-treated condition and required test temperature.

410 over-tempering at elevated temperature

Long exposure at elevated temperature can reduce the strength of hardened 410 through tempering effects. A high-temperature design therefore needs more than a room-temperature hardness specification.

304 work hardening during forming

304 has excellent ductility, but it still work hardens during cold deformation. Severe forming may require appropriate tooling, process control or intermediate annealing.

Inspection guidance: for 410, record the final heat-treatment condition and verify hardness in addition to dimensions. For 304, inspect weld condition, crevices, deposits and localized corrosion where the service environment is more aggressive.

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304 stainless steel

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410 stainless steel

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M10 · Standards & equivalence

304 and 410 stainless steel grade designations

304 and 410 are not equivalent grades. Their UNS, EN designations, microstructures and manufacturing routes are fundamentally different.

Designation / standard	304	410	Procurement caveat
ASTM / AISI type	304	410	Different stainless steel families.
UNS	S30400	S41000	Use exact UNS for material identification.
EN material number	1.4301	1.4006	Not interchangeable EN grades.
EN name	X5CrNi18-10	X12Cr13	The chemistry reflects austenitic versus martensitic design.
JIS	SUS304	SUS410	Verify the governing JIS product standard.
GB reference	Verify against project standard	Verify against project standard	Do not rely on informal equivalence charts.
ASTM A240/A240M	Flat-product grade	Flat-product grade	Use correct condition and mechanical requirements.
ASTM A276	Applicable long-product family	Applicable 410 specification	Check bar / shape requirements separately.
ASTM A479	Application-dependent	Listed 410 specification	Confirm pressure-service or project requirements.
ASTM A580	Wire product family	Listed 410 specification	Wire requirements differ from plate / sheet.
Heat-treatment designation	Not martensitic hardening	Must be defined when properties depend on it	For 410, grade alone may not define final performance.

304 · S30400 Austenitic Cr-Ni general-purpose stainless steel.

304 · 1.4301 EN X5CrNi18-10 austenitic designation.

410 · S41000 Hardenable martensitic chromium stainless steel.

410 · 1.4006 EN X12Cr13 martensitic designation.

For 410, always confirm whether the certificate and drawing specify annealed, hardened, tempered or another final mechanical condition. A grade cross-reference alone does not define hardness.

M11 · Direct answers

304 vs 410 stainless steel FAQ

Direct answers to common engineer and purchasing questions about 304 versus 410 stainless steel.

What is the main difference between 304 and 410 stainless steel?

304 is an austenitic chromium-nickel stainless steel designed around corrosion resistance, ductility and fabrication. 410 is a martensitic chromium stainless steel that can be hardened and tempered to obtain higher hardness and strength.

Which is more corrosion resistant, 304 or 410?

304 normally provides substantially better general corrosion resistance. It contains approximately 18% chromium and significant nickel, while 410 contains roughly 12–13% chromium and very little nickel.

Which is harder, 304 or 410?

410 can become much harder when it is correctly hardened and tempered. 304 cannot be hardened through a conventional martensitic quench-and-temper process, although cold working can increase its strength and hardness.

Is 410 stainless steel magnetic?

Yes. 410 is martensitic and ferromagnetic. Annealed 304 generally has a low magnetic response, although cold working can increase its magnetism.

Which grade is easier to weld?

304 is generally much easier to weld. 410's hardenability can produce a hard heat-affected zone and increase cracking risk. Some 410 weldments therefore require preheat, controlled filler selection and post-weld treatment.

Can 410 replace 304 to obtain higher strength?

Not automatically. The change also reduces corrosion resistance and ductility, changes magnetic behavior and introduces heat-treatment and welding requirements.

Can 304 be hardened like 410?

No. 304 does not undergo the conventional martensitic hardening treatment used for 410. 304 can become stronger through cold working, but this is a different strengthening mechanism.

Which is better for seawater?

304 is more corrosion resistant than 410, but severe seawater service can exceed the capability of both grades. 316L, duplex or higher-alloy stainless steel may be required depending on temperature, crevices and exposure conditions.

M13 · Sources & technical review

Technical basis for this 304 vs 410 comparison

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This page distinguishes austenitic corrosion-resistant 304 from heat-treatable martensitic 410 and keeps annealed data separate from hardened-and-tempered performance.

Primary technical references

Outokumpu Core Range Datasheet 304/4301 chemistry, EN mechanical properties, physical properties, applications and product forms.
Outokumpu Core 304/4301 General-purpose austenitic 18Cr-8Ni stainless steel with good corrosion resistance, formability and weldability.
Alleima 2XC24 / ASTM 410 / EN 1.4006 410 grade identity, martensitic classification, nominal chemistry and billet supply information.
Carpenter Technology 410 Hardenable martensitic grade positioning, S41000 identification, applicable specifications and product forms.
New Castle Stainless Plate 410 Datasheet ASTM A240 mechanical reference, physical properties, heat-treatment guidance, corrosion and welding behavior.
Nippon Steel Stainless Steel Plates & Sheets SUS410, 1.4006 and mechanical-property cross-reference information.
ASTM A240/A240M Plate, sheet and strip material specification framework.
ASTM A276 / ASTM A479 / ASTM A580 Product-specific references for applicable 410 bar and wire forms.

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M14 · Ask an engineer

Still deciding between 304 and 410?

Send the actual corrosion, hardness, heat-treatment, welding and dimensional requirements so the material can be reviewed against the finished component.

304, 410 or alternative grade under consideration
UNS / EN / ASTM or customer specification
Sheet, strip, plate, bar, rod, wire or component form
Thickness, width, diameter and dimensional tolerance
Required yield and tensile strength
Required hardness
Annealed, hardened or tempered condition
Heat-treatment route if 410 is selected
Wear or abrasion requirement
Forming and machining requirements
Welding process and joint details
Preheat / post-weld heat-treatment requirement
Water, chemical or chloride exposure
Normal and peak service temperature
Magnetic-property requirement
Surface finish
Quantity, destination and due date
MTC, hardness test and inspection requirement

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