Stainless Steel 1.4002 Annealed
Temper · default condition
EN 1.4002 · UNS S40500 · AISI/SAE 405
Standard stocked condition for plate, sheet, bar and tube; maximum ductility and best weld/form behaviour.
Values for the Annealed condition
Other 1.4002 tempers and conditions
1.4002 is listed in 3 conditions; see the grade overview at 1.4002.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Stress relieved | Applied to heavy welded fabrications to relieve residual stress and restore HAZ ductility. | 225 | 455 | 25 | 150 HB | 2.9 % IACS |
AnnealedDefaultThis page Annealed (softened, ~780–830 °C, air/furnace cooled) | Standard stocked condition for plate, sheet, bar and tube; maximum ductility and best weld/form behaviour. | 230 | 460 | 26 | 150 HB | — |
Cold drawn | Bar/wire condition with tighter tolerances and higher strength; ductility and formability drop. | 420 | 560 | 15 | 11 HRC | 2.9 % IACS |
What is 1.4002 Annealed?
1.4002 Annealed is 1.4002 in the Annealed temper — standard stocked condition for plate, sheet, bar and tube; maximum ductility and best weld/form behaviour. 1.4002 Annealed has a yield strength of 230 MPa (33.4 ksi) and a tensile strength of 460 MPa (66.7 ksi) — weaker than 99% of stainless steel grades. Elongation at break is 26% and the elastic modulus is 200 GPa (29 Msi). 1.4002 Annealed 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).
Advantages
- Conducts heat well — 27 W/m·K (15.6 BTU/hr·ft·°F), better than 97% of stainless steel grades
- Easy to machine — 55/100, better than 94% of stainless steel grades
- High electrical conductivity — 2.9 % IACS, better than 87% of stainless steel grades
- Low embodied carbon — 3.6 kg CO₂/kg, better than 83% of stainless steel grades
Limitations
- Low strength — 230 MPa (33.4 ksi), worse than 99% of stainless steel grades
- Needs corrosion protection — 42/100, worse than 90% of stainless steel grades
- Hard to polish — 55/100, worse than 89% of stainless steel grades
1.4002 Annealed properties
Typical room-temperature values for 1.4002 Annealed; 10 are specific to this condition. Other listed values are 1.4002 reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
1.4002 Annealed 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).
Mechanical14
1.4002 Annealed has a yield strength of 230 MPa (33.4 ksi) and a tensile strength of 460 MPa (66.7 ksi) — weaker than 99% of stainless steel grades. Elongation at break is 26% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
1.4002 Annealed is rated for continuous service to 700°C (1,292 °F). It conducts heat at 27 W/m·K (15.6 BTU/hr·ft·°F), better than 97% of stainless steel grades. Thermal expansion is 10.8 µm/m·K (6 µin/in·°F).
Electrical3
1.4002 Annealed conducts electricity at 2.9 % IACS, better than 87% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is fair (42/100), worse than 90% of stainless steel grades.
Sustainability4
Producing a kilogram of 1.4002 Annealed takes about 50 MJ of energy and emits 3.6 kg of CO₂ — less than 80% of stainless steel grades. Typical recycled content is 65%.
Manufacturability7
1.4002 Annealed's machinability is good (55/100, better than 94% of stainless steel grades); weldability very good (78/100); formability good (60/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 1.4002 Annealed
Is 1.4002 easy to machine?
Machines like annealed 410 but gummier — use sharp positive-rake carbide, rigid setups, 60–100 m/min, generous coolant, and avoid dwelling to prevent work-hardened skin.
Can 1.4002 be welded?
Best-in-class among 13Cr grades: Al stabilization prevents HAZ martensite so preheat is often unnecessary; use 405/430 or austenitic 309L/308L filler, low heat input, and PWHT at 730–790 °C on heavy sections to limit grain-coarsening embrittlement.
Can 1.4002 be formed, bent or molded?
Cold form in the annealed condition with generous bend radii (≥1.5t) and allowance for ~15–20 % springback; hot work at 800–1050 °C then anneal, and avoid holding at 400–550 °C (475 °C embrittlement).
What surface finishes work on 1.4002?
Passivate per ASTM A967 or pickle after welding to restore the chromium oxide film; takes brushed and mirror finishes less brightly than 430, and is commonly painted or aluminized for furnace service.
1.4002 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 10088-2 max 0.08 | ≤ 0.08 | 0.05 |
| Si | ≤ 1 | 0.4 |
| Mn | ≤ 1 | 0.5 |
| P | ≤ 0.04 | 0.03 |
| SASTM A240 grade 405 allows S ≤ 0.030 | ≤ 0.02 | 0.01 |
| CrASTM 405: 11.5–14.5 | 12 – 14 | 13 |
| Alferrite stabilizer, suppresses HAZ hardening | 0.1 – 0.3 | 0.2 |
| NiASTM A240 limit; not specified in EN 10088-2 | ≤ 0.6 | 0.3 |
| Fe | balance | — |
1.4002 Annealed — frequently asked
What is 1.4002 Annealed used for?
1.4002 Annealed is typically used for welded pressure vessels, heat exchangers and furnace components. In short: most weldable 13Cr grade; al-stabilized, no HAZ martensite; pressure-vessel ferritic stainless.
What is the yield strength of 1.4002 Annealed?
1.4002 Annealed has a typical yield strength of 230 MPa (33.4 ksi) and a tensile strength of 460 MPa (66.7 ksi) — weaker than 99% of stainless steel grades. Strength varies by condition: see the 3 listed tempers.
Is 1.4002 Annealed easy to machine?
Reasonably — machinability is rated good (55/100, better than 94% of stainless steel grades). Machines like annealed 410 but gummier — use sharp positive-rake carbide, rigid setups, 60–100 m/min, generous coolant, and avoid dwelling to prevent work-hardened skin.
Can 1.4002 Annealed be welded?
Yes — weldability is rated very good (78/100). Best-in-class among 13Cr grades: Al stabilization prevents HAZ martensite so preheat is often unnecessary; use 405/430 or austenitic 309L/308L filler, low heat input, and PWHT at 730–790 °C on heavy sections to limit grain-coarsening embrittlement.
What surface finishes work on 1.4002 Annealed?
Passivate per ASTM A967 or pickle after welding to restore the chromium oxide film; takes brushed and mirror finishes less brightly than 430, and is commonly painted or aluminized for furnace service.
Can 1.4002 Annealed be formed, bent or molded?
Cold form in the annealed condition with generous bend radii (≥1.5t) and allowance for ~15–20 % springback; hot work at 800–1050 °C then anneal, and avoid holding at 400–550 °C (475 °C embrittlement).
What is the maximum service temperature of 1.4002 Annealed?
1.4002 Annealed is rated for continuous use to about 700°C (1,292 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 1.4002 Annealed and 1.4002-CD?
Annealed is the default condition — standard stocked condition for plate, sheet, bar and tube; maximum ductility and best weld/form behaviour. CD: bar/wire condition with tighter tolerances and higher strength; ductility and formability drop. Yield strength is 230 MPa in Annealed versus 420 MPa in CD.
Sources
- EN 10088-1/-2 Stainless steels — list of grades and technical delivery conditions for sheet/plate/strip — CEN (2014)
- ASTM A240/A240M Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip — ASTM International (2023)
- ASTM A276/A276M Stainless Steel Bars and Shapes — ASTM International (2023)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- ASM Handbook Vol. 13B — Corrosion: Materials — ASM International (2005)
- GB/T 1220 / GB/T 4237 (0Cr13Al ) (2016)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.