Stainless Steel 1.4005
EN 1.4005 · UNS S41600 · AISI/SAE 416 · GB Y1Cr13
1.4005 (X12CrS13, AISI 416, S41600) is a sulfur-added free-machining version of the 13% Cr 410-type martensitic stainless, available annealed, cold drawn, and hardened and tempered (+QT650, +QT700, 30–35 HRC).
Reference datasheet — 1.4005 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the +A condition
1.4005 tempers and conditions
1.4005 is supplied in 6 conditions, soft to hard. +A is the default FabDigit quotes; the values on this page are for it.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
+ADefault Annealed | Standard stocked bar condition for high-volume screw-machine parts that do not need heat treatment. | 320 | 550 | 25 | 175 HB | — |
Hardened and high-temperature tempered, Rm 650–850 MPa | Standard EN quenched-and-tempered delivery condition — best compromise of strength, ductility and corrosion behaviour for shafts and valve stems. | 520 | 750 | 15 | 20 HRC | — |
Hardened and tempered, Rm 700–850 MPa | Slightly stronger Q&T grade class for small-section fasteners and pins where 500 MPa proof strength is required. | 560 | 780 | 14 | 23 HRC | — |
Cold drawn / centreless ground bar | Pick when close tolerance, straightness and higher as-supplied strength are needed without heat treatment. | 585 | 760 | 14 | 21 HRC | — |
oil/air hardened, tempered ~300–400 °C | For wear-loaded machined parts (bushings, cams, spindles) needing higher hardness than the QT grades but some residual toughness. | 860 | 1,030 | 13 | 32 HRC | — |
Hardened | Maximum hardness condition for wear surfaces and lightly loaded cutting/latching parts; brittle and low in impact toughness. | 1,050 | 1,300 | 8 | 40 HRC | — |
What is 1.4005?
1.4005 (X12CrS13, AISI 416, S41600) is a sulfur-added free-machining version of the 13% Cr 410-type martensitic stainless, available annealed, cold drawn, and hardened and tempered (+QT650, +QT700, 30–35 HRC). Annealed properties are 320 MPa yield, 550 MPa tensile, 25% elongation and 175 HB (88 HRB), with a machinability rating of 85 — the reference point for stainless screw-machine work. The sulfide inclusions reduce corrosion resistance (30), formability (30) and weldability, and service is limited to 600 °C. Use 1.4021/420 where welding is needed or 303 for better corrosion resistance. 1.4005 has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 83% of stainless steel grades. It melts at 1,480°C (2,696 °F). 1.4005 has a yield strength of 320 MPa (46.4 ksi) and a tensile strength of 550 MPa (79.8 ksi) — weaker than 60% of stainless steel grades. Elongation at break is 25% and the elastic modulus is 215 GPa (31.2 Msi).
What is 1.4005 used for?
- fasteners
- valve stems
- pump shafts
- precision turned parts
Advantages
- Easy to machine — 85/100, better than 100% of stainless steel grades
- Conducts heat well — 30 W/m·K (17.3 BTU/hr·ft·°F), better than 99% of stainless steel grades
- Low embodied carbon — 3 kg CO₂/kg, better than 97% of stainless steel grades
- High electrical conductivity — 2.9 % IACS, better than 87% of stainless steel grades
Limitations
- Hard to polish — 35/100, worse than 100% of stainless steel grades
- Needs corrosion protection — 30/100, worse than 99% of stainless steel grades
- Difficult to weld — 15/100, worse than 98% of stainless steel grades
1.4005 properties
Typical room-temperature values for 1.4005-+A; bars are the position among stainless steel grades.
Physical3
1.4005 has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 83% of stainless steel grades. It melts at 1,480°C (2,696 °F).
Mechanical15
1.4005 has a yield strength of 320 MPa (46.4 ksi) and a tensile strength of 550 MPa (79.8 ksi) — weaker than 60% of stainless steel grades. Elongation at break is 25% and the elastic modulus is 215 GPa (31.2 Msi).
Thermal6
1.4005 is rated for continuous service to 600°C (1,112 °F). It conducts heat at 30 W/m·K (17.3 BTU/hr·ft·°F), better than 99% of stainless steel grades. Thermal expansion is 10.5 µm/m·K (5.83 µin/in·°F).
Electrical3
1.4005 conducts electricity at 2.9 % IACS, better than 87% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is poor (30/100), worse than 99% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4005 takes about 43 MJ of energy and emits 3 kg of CO₂ — less than 94% of stainless steel grades. Typical recycled content is 60%.
Manufacturability7
1.4005's machinability is excellent (85/100, better than 100% of stainless steel grades); weldability poor (15/100); formability poor (30/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the stainless steel family
Yield strength against density for every stainless steel grade FabDigit runs. 1.4005 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 1.4005
Is 1.4005 easy to machine?
Benchmark free-machining stainless — run 25–40 % faster than 410 with sharp positive-rake carbide, sulfurised oil or good flood coolant; chips break cleanly and threads/knurls form well.
Can 1.4005 be welded?
Essentially not recommended: sulfur causes hot cracking; if unavoidable, preheat 200–300 °C, use 309L/410NiMo filler, minimum restraint and post-weld temper at 700–760 °C.
Can 1.4005 be formed, bent or molded?
Cold forming limited to light bending in the annealed condition with generous radii (≥2t); hot work 1150–800 °C then slow-cool anneal at 750–800 °C.
1.4005 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| CEN 10088-3; AISI 416 allows ≤0.15 | 0.06 – 0.15 | 0.11 |
| Si | ≤ 1 | 0.4 |
| MnAISI 416 limit ≤1.25 | ≤ 1.5 | 0.9 |
| PAISI 416 allows ≤0.060 | ≤ 0.04 | 0.03 |
| Sfree-machining addition (MnS) | 0.15 – 0.35 | 0.25 |
| Cr | 12 – 14 | 13 |
| Mooptional | ≤ 0.6 | 0.2 |
| Fe | balance |
What surface finishes work on 1.4005?
Passivate in nitric acid with sodium dichromate (not plain citric) to avoid smut from sulfide inclusions; hard chrome, electroless nickel or black oxide are common; mirror polishing is limited by sulfide stringers.
Surface treatments FabDigit runs on stainless steel parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Passivation
Organic Coating
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Stainless Steel 1.4005 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- S41600
- AISI / SAE
- 416
- EN / DIN / Werkstoff-Nr.
- X12CrS13
- GB (China)
- Y1Cr13
How much does 1.4005 cost?
1.4005 is a standard-cost stainless steel ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
1.4005 — frequently asked
What is 1.4005 used for?
1.4005 is typically used for fasteners, valve stems, pump shafts and precision turned parts. In short: best-machining martensitic stainless; machinability 85 benchmark; not for welded assemblies.
What is the yield strength of 1.4005?
1.4005 has a typical yield strength of 320 MPa (46.4 ksi) and a tensile strength of 550 MPa (79.8 ksi) — weaker than 60% of stainless steel grades. Strength varies by condition: see the 6 listed tempers.
Is 1.4005 easy to machine?
Yes — machinability is rated excellent (85/100, better than 100% of stainless steel grades). Benchmark free-machining stainless — run 25–40 % faster than 410 with sharp positive-rake carbide, sulfurised oil or good flood coolant; chips break cleanly and threads/knurls form well.
Can 1.4005 be welded?
Not readily — weldability is rated poor (15/100). Essentially not recommended: sulfur causes hot cracking; if unavoidable, preheat 200–300 °C, use 309L/410NiMo filler, minimum restraint and post-weld temper at 700–760 °C.
What surface finishes work on 1.4005?
Passivate in nitric acid with sodium dichromate (not plain citric) to avoid smut from sulfide inclusions; hard chrome, electroless nickel or black oxide are common; mirror polishing is limited by sulfide stringers.
Can 1.4005 be formed, bent or molded?
Cold forming limited to light bending in the annealed condition with generous radii (≥2t); hot work 1150–800 °C then slow-cool anneal at 750–800 °C.
What is the maximum service temperature of 1.4005?
1.4005 is rated for continuous use to about 600°C (1,112 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 1.4005 +A and 1.4005-H?
+A is the default condition — standard stocked bar condition for high-volume screw-machine parts that do not need heat treatment. H: maximum hardness condition for wear surfaces and lightly loaded cutting/latching parts; brittle and low in impact toughness. Yield strength is 320 MPa in +A versus 1,050 MPa in H.
How much does 1.4005 cost?
1.4005 is a standard-cost stainless steel ($$), cheaper than about 71% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- EN 10088-3 Stainless steels — Semi-finished products, bars, rods, sections — CEN (2014)
- EN 10088-1 Stainless steels — List of stainless steels (physical properties) — CEN (2014)
- ASTM A582/A582M Free-Machining Stainless Steel Bars — ASTM (2021)
- GB/T 1220 (Y1Cr13) — SAC (2007)
- ASM Handbook Vol.1 — Properties and Selection: Irons, Steels — ASM International (1990)
- ASM Handbook Vol.16 — Machining — ASM International (1989)
- Type 416 / 1.4005 bar datasheet — Sandvik / Outokumpu (2022)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.