405
Data verified405 is an aluminium-bearing ferritic stainless designed to remain non-hardening when cooled from welding temperatures, unlike plain 410. It gives 12% chromium corrosion resistance in a weldable, low-cost sheet and plate grade.
Chemical composition
| Element | Content (%) |
|---|---|
| C | ≤0.08 |
| Si | ≤1.00 |
| Mn | ≤1.00 |
| P | ≤0.040 |
| S | ≤0.030 |
| Cr | 11.50–14.50 |
| Al | 0.10–0.30 |
Weight percent, per the governing standard ranges. Actual values per heat are on the mill certificate.
Properties
| Delivery condition | Annealed |
| Hardness | ≤183 HB (annealed) |
| Tensile strength | 415–585 MPa |
| Density | 7.70 g/cm³ |
| Magnetic | Yes |
Heat treatment
Anneal 790–880 °C, air or furnace cool. The aluminium addition suppresses martensite formation on cooling, so it stays ferritic and weldable.
Equivalent grades
| Standard | Designation |
|---|---|
| din | 1.4002 |
| aisi | 405 |
| jis | SUS405 |
| gb | 06Cr13Al |
Compare side by side: 405 vs 410 · 405 vs 410L
Equivalents overlap in chemistry and use but are not always identical — see our equivalents guide before substituting in certified designs.
Applications & Processing
Applications: Pressure vessels, heat-exchanger parts, steam turbine blades (annealed), quenched-and-tempered look-alike parts not requiring hardening.
Processing: Weldable without the hardening cracks of 410; ductility is lower than austenitics; avoid service above about 475 °C for long periods (475 °C embrittlement).
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Ask for a quotationVisit NasteelSource: ASTM A240 / EN 10088 published ranges · Last updated 2026-11-03. Data is indicative — verify critical values against the governing standard and mill certificate before use.