EN 1.4006 is a stainless steel grade in the European standard (EN), corresponding to the German standard X12Cr13. It is a martensitic stainless steel primarily composed of approximately 0.12% carbon (C) and 13% chromium (Cr). This grade offers high strength, hardness, and wear resistance. Its mechanical properties can be further enhanced through heat treatment. It also provides a certain level of corrosion resistance-superior to carbon steel but inferior to austenitic stainless steels.
EN 1.4006 is commonly used for components requiring both strength and moderate corrosion resistance, such as mechanical parts, cutting tools, valves, and pump shafts. It has good machinability, but welding requires caution, including preheating and post-weld heat treatment, to prevent cracking.
What is the stainless steel equivalent of 1.4006?
| Standard |
Equivalent Grade |
| AISI/ASTM |
410 |
| UNS |
S41000 |
| DIN |
X12Cr13 |
| GB (China) |
1Cr13 |
| JIS |
SUS410 |
EN 1.4006 Chemical Composition (EN 10088-1)
| Element |
Content (wt%) |
| Carbon (C) |
0.08–0.15 |
| Chromium (Cr) |
11.5–13.5 |
| Manganese (Mn) |
≤ 1.00 |
| Silicon (Si) |
≤ 1.00 |
| Phosphorus (P) |
≤ 0.040 |
| Sulfur (S) |
≤ 0.030 |
| Nitrogen (N) |
≤ 0.11 |
EN 1.4006 stainless steel Mechanical Properties (typical in quenched & tempered condition)
| Property |
Value |
| Tensile strength |
500–700 MPa (annealed) |
| Yield strength (Rp0.2) |
≥ 300 MPa |
| Hardness (HB) |
≤ 225 (annealed) |
| Elongation (A5) |
≥ 20% |
| Impact toughness |
Moderate |
EN 1.4006 stainless steel Heat Treatment
| Process |
Temperature Range |
| Annealing |
815–900 °C |
| Hardening |
980–1030 °C |
| Tempering |
150–650 °C |
| Cooling |
Air or oil (after quenching) |
What is the standard of EN 1.4006 stainless steel?
| Grade : |
X12Cr13 |
| Number: |
1.4006 |
| Classification: |
Martensitic stainless steel |
| Density: |
7.7 g/cm ³ |
| Standard: |
| EN 10088-2: 2005 Stainless steels. Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes |
| EN 10088-3: 2005 Stainless steels. Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes |
| EN 10272: 2007 Stainless steel bars for pressure purposes |
| EN 10263-5: 2001 Steel rod, bars and wire for cold heading and cold extrusion. Technical delivery conditions for stainless steels |
| EN 10250-4: 2000 Open steel die forgings for general engineering purposes. Stainless steels |
| EN 10297-2: 2005 Seamless circular steel tubes for mechanical and general engineering purposes. Stainless steel. Technical delivery conditions |
| EN 10088-1: 2005 Stainless steels. List of stainless steels |
| EN 10088-4: 2009 Stainless steels. Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for construction purposes |
| EN 10088-5: 2009 Stainless steels. Technical delivery conditions for bars, rods, wire, sections and bright products of corrosion resisting steels for construction purposes |
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