Stainless Steel 1.4006
EN 1.4006 · UNS S41000 · AISI/SAE 410 · JIS SUS410 · GB 06Cr13, 1Cr13
1.4006 (X12Cr13, AISI 410) is the base 13% Cr martensitic stainless of the EN 10088 family, strengthened by quench and temper rather than by cold work.
Reference datasheet — 1.4006 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
1.4006 tempers and conditions
1.4006 is supplied in 5 conditions, soft to hard. +A is the default FabDigit quotes; the values on this page are for it.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
+ADefault Annealed | Stock condition for machining, cold forming and subsequent hardening by the user. | 300 | 520 | 24 | 155 HB | — |
Quenched and tempered to Rm 550–750 MPa | High-temperature tempered condition for shafts and fittings needing good toughness with moderate strength. | 420 | 620 | 19 | 190 HB | — |
Quenched and tempered to Rm 650–850 MPa | Standard structural strength condition for valve stems, pump shafts, bolts and turbine parts. | 520 | 730 | 17 | 21 HRC | — |
Cold drawn | Bright, close-tolerance bar for machined parts where extra strength and good surface finish are wanted without heat treatment. | 550 | 700 | 14 | 220 HB | — |
Hardened | Pick for wear parts, cutlery-type blades and seats where hardness matters more than toughness or corrosion resistance. | 1,050 | 1,350 | 12 | 42 HRC | — |
What is 1.4006?
1.4006 (X12Cr13, AISI 410) is the base 13% Cr martensitic stainless of the EN 10088 family, strengthened by quench and temper rather than by cold work. It is chosen where moderate corrosion resistance must be combined with heat-treatable strength; annealed bar, forgings, plate and wire run about 300 MPa yield, 520 MPa tensile, 24% elongation and 155 HB, with +QT550 and +QT650 tempers on file and service to 650 °C. Corrosion resistance is limited to mild atmospheric, steam and fresh-water exposure, and welding needs preheat plus an immediate post-weld temper. Step up to 1.4021 when higher hardness is required. 1.4006 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). 1.4006 has a yield strength of 300 MPa (43.5 ksi) and a tensile strength of 520 MPa (75.4 ksi) — weaker than 68% of stainless steel grades. Elongation at break is 24% and the elastic modulus is 215 GPa (31.2 Msi).
What is 1.4006 used for?
- turbine blades
- cutlery
- valve parts
- fasteners
- pump shafts
Advantages
- Conducts heat well — 30 W/m·K (17.3 BTU/hr·ft·°F), better than 99% of stainless steel grades
- Low embodied carbon — 3.2 kg CO₂/kg, better than 95% of stainless steel grades
- High electrical conductivity — 2.9 % IACS, better than 87% of stainless steel grades
- Easy to machine — 45/100, better than 84% of stainless steel grades
Limitations
- Needs corrosion protection — 40/100, worse than 93% of stainless steel grades
- Difficult to weld — 45/100, worse than 79% of stainless steel grades
- Low fracture toughness — 90 MPa·√m (81.9 ksi·√in), worse than 75% of stainless steel grades
1.4006 properties
Typical room-temperature values for 1.4006-+A; bars are the position among stainless steel grades.
Physical3
1.4006 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).
Mechanical16
1.4006 has a yield strength of 300 MPa (43.5 ksi) and a tensile strength of 520 MPa (75.4 ksi) — weaker than 68% of stainless steel grades. Elongation at break is 24% and the elastic modulus is 215 GPa (31.2 Msi).
Thermal6
1.4006 is rated for continuous service to 650°C (1,202 °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
1.4006 conducts electricity at 2.9 % IACS, better than 87% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is fair (40/100), worse than 93% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4006 takes about 45 MJ of energy and emits 3.2 kg of CO₂ — less than 91% of stainless steel grades. Typical recycled content is 60%.
Manufacturability7
1.4006's machinability is fair (45/100, better than 84% of stainless steel grades); weldability fair (45/100); formability fair (50/100).
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. 1.4006 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 1.4006
Is 1.4006 easy to machine?
Machine in the annealed or ≤26 HRC condition with sharp, rigid tooling, positive rake carbide and generous coolant; expect ~50–55 % of 1212 free-cutting steel and gummy chips at low hardness.
Can 1.4006 be welded?
Weldable with preheat 200–300 °C and immediate post-weld temper at 700–750 °C using 410 or austenitic 309/308L filler; unpreheated welds crack from hard, brittle martensite in the HAZ.
Can 1.4006 be formed, bent or molded?
Cold form only in the annealed state with generous bend radii (≥2t) and stress-relieve afterwards; hot work 1100–1200 °C and cool slowly to avoid quench cracking.
1.4006 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 X12Cr13 | 0.08 – 0.15 | 0.12 |
| Si | ≤ 1 | 0.4 |
| Mn | ≤ 1.5 | 0.6 |
| P | ≤ 0.04 | 0.03 |
| S0.15–0.35 S in free-machining variant 1.4005 / 416 | ≤ 0.03 | 0.02 |
| Cr | 11.5 – 13.5 | 12.5 |
| Ni | ≤ 0.75 | 0.3 |
| Fe | balance |
What surface finishes work on 1.4006?
Passivate (ASTM A967 nitric or citric) after machining, or electropolish for best corrosion behaviour; takes a good mechanical polish and accepts hard chrome, nitriding or PVD coatings — no anodising.
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 1.4006 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- S41000
- AISI / SAE
- 410
- EN / DIN / Werkstoff-Nr.
- X12Cr13
- GB (China)
- 06Cr131Cr13
- JIS
- SUS410
How much does 1.4006 cost?
1.4006 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.
1.4006 — frequently asked
What is 1.4006 used for?
1.4006 is typically used for turbine blades, cutlery, valve parts, fasteners and pump shafts. In short: baseline 13% Cr martensitic; most weldable martensitic grade; 650 °C service limit.
What is the yield strength of 1.4006?
1.4006 has a typical yield strength of 300 MPa (43.5 ksi) and a tensile strength of 520 MPa (75.4 ksi) — weaker than 68% of stainless steel grades. Strength varies by condition: see the 5 listed tempers.
Is 1.4006 easy to machine?
Reasonably — machinability is rated fair (45/100, better than 84% of stainless steel grades). Machine in the annealed or ≤26 HRC condition with sharp, rigid tooling, positive rake carbide and generous coolant; expect ~50–55 % of 1212 free-cutting steel and gummy chips at low hardness.
Can 1.4006 be welded?
With care — weldability is rated fair (45/100). Weldable with preheat 200–300 °C and immediate post-weld temper at 700–750 °C using 410 or austenitic 309/308L filler; unpreheated welds crack from hard, brittle martensite in the HAZ.
What surface finishes work on 1.4006?
Passivate (ASTM A967 nitric or citric) after machining, or electropolish for best corrosion behaviour; takes a good mechanical polish and accepts hard chrome, nitriding or PVD coatings — no anodising.
Can 1.4006 be formed, bent or molded?
Cold form only in the annealed state with generous bend radii (≥2t) and stress-relieve afterwards; hot work 1100–1200 °C and cool slowly to avoid quench cracking.
What is the maximum service temperature of 1.4006?
1.4006 is rated for continuous use to about 650°C (1,202 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 1.4006 +A and 1.4006-H?
+A is the default condition — stock condition for machining, cold forming and subsequent hardening by the user. H: pick for wear parts, cutlery-type blades and seats where hardness matters more than toughness or corrosion resistance. Yield strength is 300 MPa in +A versus 1,050 MPa in H.
How much does 1.4006 cost?
1.4006 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 — CEN (2014)
- ASTM A276/A276M Stainless Steel Bars and Shapes — ASTM (2023)
- GB/T 1220 — SAC (2007)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels — ASM International (1990)
- Martensitic stainless steel 410/1.4006 datasheet — Outokumpu / Sandvik (2021)
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.