Grade dossier
410 Stainless Steel
410 stainless steel is a heat-treatable martensitic chromium grade identified as UNS S41000 and commonly cross-referenced to EN 1.4006. Its strongest procurement case is a component that needs a practical combination of moderate corrosion resistance, hardenability, strength and wear resistance after heat treatment—such as valves, pump parts, shafts, cutlery or other mechanical parts.
Identity before substitution
Specify the 410 grade together with condition and heat treatment
Type 410 is not defined by chemistry alone. In the annealed condition it is comparatively soft and formable for a martensitic stainless steel; after austenitizing, quenching and tempering it develops the strength, hardness and wear resistance that usually justify selecting the grade. Product form, governing standard, dimensions, delivered condition, final heat treatment, finish and certificate requirements should therefore be stated on the purchase order.
410 stainless composition
ASTM A240 chemistry reference for UNS S41000
Carbon is part of the heat-treatment response
ATI lists Type 410 with 0.08–0.15% carbon and 11.5–13.5% chromium. Carbon enables martensitic hardening, while chromium provides the stainless corrosion-resistance base. Do not use chemistry alone to predict final hardness: section size, austenitizing temperature, quench and temper all matter.
| C | 0.08–0.15% |
|---|---|
| Cr | 11.5–13.5% |
| Mn | 1.00% max |
| Si | 1.00% max |
| Ni | 0.75% max |
| P | 0.040% max |
| S | 0.030% max |
| Fe | Balance |
410 stainless properties
Separate annealed specification limits from heat-treated performance
ATI ASTM A240 plate, sheet and strip requirements
| Tensile strength | 450 MPa min |
|---|---|
| 0.2% yield strength | 205 MPa min |
| Elongation | 20% min |
| Hardness | 96 HRB max |
Published ATI typical condition examples
| Annealed UTS | about 510 MPa |
|---|---|
| Annealed 0.2% YS | about 290 MPa |
| Annealed elongation | about 34% |
| Hardened + 204°C temper | about 43 HRC; UTS 1399 MPa* |
*ATI reports this as a typical sheet-sample result after hardening at 982°C and tempering at 204°C; it is not a guaranteed production property. Cleveland-Cliffs also shows that achievable hardness depends on the end user's heat-treatment process. Use the governing specification, qualified heat-treatment route and actual MTC/test results for acceptance.
Selection boundary
Where 410 belongs—and where the application needs another grade
410 is selected when heat-treated strength, hardness or wear resistance must be combined with moderate stainless corrosion resistance. It is not a default substitute for austenitic grades in aggressive corrosion service, and it is not the preferred choice when extensive welding or high-temperature service dominates the design.
Good reasons to evaluate 410
Valves, flanges, axles, pump parts and other mechanical components that need a hardenable stainless grade.
Cutlery, shears, instruments, nozzles, springs and wear surfaces where heat-treated hardness matters.
Parts that will be blanked or formed in the annealed condition and then heat treated to final properties.
Air, water and mildly corrosive chemical service after the required hardening and stress-relief/tempering route is confirmed.
Stop and review these constraints
Cleveland-Cliffs notes poor corrosion performance in the as-annealed condition; do not treat annealed stock as final corrosion performance.
Martensitic weldability is limited by hardenability and cold-cracking risk, so welding-heavy fabrication needs a qualified procedure and heat-treatment plan.
Most martensitic stainless steels are not recommended above about 425°C where strength and corrosion resistance can fall.
For severe chloride, acid or appearance-critical service, select from verified corrosion data rather than assuming 410 is sufficient.
Fabrication route
Machine and form annealed 410, then control welding and heat treatment
For maximum softness and ductility, form and machine 410 in the annealed condition. ATI gives an annealed machining-speed reference of about 18.3–24.4 m/min.
Cleveland-Cliffs describes martensitic stainless weldability as limited because of hardenability and recommends special attention to cold-cracking control, including preheat and consideration of post-weld heat treatment.
For hardening, producer guidance places Type 410 austenitizing roughly in the 927–1010°C range; quench medium, section size and final temper must be defined by the required property set.
Remove heat tint, oxide and embedded iron when corrosion performance matters. Surface condition after heat treatment should be specified and inspected.
410 stainless supplier checklist
Use attributable mill forms and sizes as a sourcing reference
A 410 stainless supplier should identify the exact form, standard, dimensions, annealed or heat-treated condition, finish, quantity, heat-treatment responsibility, inspection and MTC requirements. The ranges below are producer-published references—not a claim of live inventory on this website.
ATI: plate, sheet, strip and flat bar
ATI specifications: ASTM A240, ASME SA-240 and AMS 5504
Cleveland-Cliffs: coils and cut lengths, about 0.25–3.20 mm thick
Cleveland-Cliffs reference width: up to about 914 mm; other sizes by inquiry
MTC / heat-treatment release checkpoint
Verify heat number and traceability, 410 / UNS S41000 designation, governing specification and edition, chemistry, annealed mechanical results where applicable, final heat-treatment condition, hardness or tensile results required by the order, dimensions and supplementary inspection. If the supplier or processor performs hardening, the certificate package should identify the heat-treatment route and the test results used for release.
Interactive procurement check
Test 410 against the controlling design question
Procurement FAQ
Questions to close before ordering 410 stainless steel
What is 410 stainless steel?
410 is a martensitic chromium stainless steel, UNS S41000, commonly cross-referenced to EN 1.4006. It is selected when a hardenable stainless grade is needed for strength, hardness and wear resistance together with moderate corrosion resistance.
Is 410 stainless steel magnetic?
Yes. Martensitic stainless steels are magnetic in both the annealed and hardened conditions.
Can 410 stainless steel be hardened?
Yes. Heat treatment forms martensite and can increase hardness and strength substantially. The required austenitizing, quench and temper route must be matched to the section size and final property target.
Is 410 easy to weld?
No. Weldability is limited by hardenability and cold-cracking risk. Cleveland-Cliffs recommends special welding controls, including preheat and consideration of post-weld heat treatment; the qualified WPS should control the actual procedure.
What should a 410 RFQ include?
State product form, ASTM/ASME/AMS or EN requirement, UNS S41000, dimensions and tolerances, delivered condition, final heat-treatment responsibility, hardness or strength target, finish, quantity, service environment, MTC and inspection requirements.
Sources, scope and RFQ
Trace the 410 data, then certify the actual heat and condition
UNS S41000 chemistry, ASTM A240 plate/sheet/strip requirements, published annealed properties, heat-treatment response, machining guidance and physical-property data.
Typical chemistry and properties, coil/cut-length dimensions, corrosion limitations, weldability notes and general Type 410 heat-treatment guidance.
Martensitic classification, EN 1.4006 / UNS S41000 identity, typical 12% chromium chemistry and mechanical-engineering application examples.
Use the current order edition for flat-product acceptance and specify any additional heat-treatment, testing, dimensional or certification requirement explicitly.