Selection summary
Overview
410 is a martensitic stainless steel that can be hardened and tempered to balance strength, hardness, and toughness. Its corrosion resistance is useful in mild environments but generally below austenitic grades; successful procurement therefore requires the exact product form, heat-treatment condition, hardness or strength target, section size, and machining allowance.
This page separates standard-oriented limits from typical reference data. Purchase acceptance comes from the ordered specification and certified material test report.
Names and systems
Identity & standards
Similar designations across ASTM, EN, JIS, and other systems are not automatically interchangeable. Product form and ordered standard control chemistry, properties, dimensions, condition, and testing.
Reference chemistry
Composition
| Element | Reference range | Why it matters |
|---|---|---|
| Carbon | ≤ 0.15% | Hardening response and carbide control |
| Chromium | 11.5–13.5% | Corrosion resistance and hardenability |
| Nickel | ≤ 0.75% | Residual alloy and toughness control |
Concise grade-family reference only. Confirm every element limit against the current standard for the exact product ordered.
Condition matters
Reference properties
Annealed, hardened, and tempered products have distinct requirements
Specify test scale, location, section, and tempering condition
Typical room-temperature engineering reference
Environment first
Corrosion behavior
Suitable for mildly corrosive atmospheres, steam, and controlled water exposure when surface and heat treatment are appropriate.
Corrosion resistance is below 304 and 316; tempering condition, deposits, crevices, chlorides, and surface damage can further reduce performance.
Temperature, concentration, deposits, crevices, stress, surface finish, cleaning, and fabrication quality can change service performance.
Service limits
Temperature & service
Tempering temperature changes strength, toughness, and corrosion response; prolonged elevated-temperature use requires grade- and condition-specific review.
Delivery condition
Heat treatment & condition
410 is commonly annealed for machining, then austenitized, quenched, and tempered to the specified strength and toughness; section size controls through-hardening and distortion.
Tempering condition must be named because low and high tempering ranges produce different hardness, toughness, residual stress, and corrosion behavior.
Process route
Fabrication
Machining is commonly performed in the annealed condition before hardening and tempering.
Welding is restricted by hardenability and cracking risk; preheat, filler, heat input, and postweld treatment require a qualified procedure.
Magnetic response: Ferromagnetic.
Decision boundaries
Comparisons & substitution
420 provides higher attainable hardness and wear resistance through higher carbon, generally with less toughness and corrosion margin.
431 uses more chromium and nickel for high-strength shafting with better corrosion/toughness balance, while 304/316 remain preferable for welded or chloride-driven service.
Where it is used
Applications
Ordering scope
Product forms & standards
Bar and shapes ordered with the exact annealed or hardened-and-tempered condition, section, straightness, and test requirements.
Plate, sheet, strip, wire, forgings, or machined components under the form-specific standard with heat identity preserved through final treatment.
Decision support
Selection guidance
Choose this grade when
- Moderate corrosion resistance must be combined with heat-treatable strength and hardness.
- The component geometry and heat-treatment route can be controlled and verified.
Review another grade when
- High chloride resistance, extensive welding, or cryogenic toughness is required.
- Dimensional distortion or through-section hardness cannot be qualified for the component size.
Before ordering
Procurement checklist
Name the governing product specification and edition, exact UNS designation, dimensions, tolerances, finish, and delivery or heat-treatment condition.
Require a traceable material test report and verify chemistry, mechanical tests, heat treatment, marking, and any supplementary examination against the purchase order.
State the service environment, design temperature, fabrication route, inspection plan, certification, packaging, and any regulatory or end-user approval before order release.
Traceable evidence