What is en 1.4112 material ?
Sep 11, 2025
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What is en 1.4112 material ?
EN 1.4112, also known as X90CrMoV18 or AISI 440B, is a martensitic stainless steel with high hardness, wear resistance, and good cutting edge retention, making it suitable for cutting tools, professional knives, and surgical instruments. It offers good corrosion resistance in mild environments like fresh water and steam, can be polished to a high finish, and can be magnetized.
What material is 1.4112 equivalent to?
The EN standard 1.4112 material is equivalent to AISI 440B stainless steel. Other common equivalent designations include the EN abbreviation X90CrMoV18, the UNS designation S44003, and its use in applications like high-hardness knives.
Chemical composition and properties of stainless steel 1.4112
| 1.4112 X90CrMoV18 |
C | Si | Mn | P | S | Cr | Mo | Ni | V |
|---|---|---|---|---|---|---|---|---|---|
| min. | 0,85 | bis | bis | 17,0 | 0,9 | 0,07 | |||
| max. | 0,95 | 1,0 | 1,0 | 19,0 | 1,3 | 0,12 |
Physical properties
Magnetisability: good
Density (kg/dm³): 7.7
Thermal conductivity (at up to 20°C): 15
Specific heat at 20°C (J/kg K): 430
Modulus of elasticity kN/mm² at 20°C: 215
Electronic resistance at room temperature (in Ω mm²/m): 0.80
Is 1.4112 corrosion resistant?
Grade 1.4112 is a very high hardness martensitic stainless steel with good abrasion resistance and superior corrosion resistance to the 17% Cr to 1% C range (type 440C). The grade can also be ESR remelted to improve its inclusional cleanliness and corrosion resistance.
What is the hardness of 1.4112?
440B stainless steel is a martensitic stainless steel grade which can be heat threated up to 57 - 60 HRC. This grade is written as 1.4112 or X90CrMoV18 according to EN norm and UNS S44003 according to UNS norm.
Is 1.4112 stainless steel magnetic?
Yes, 1.4112 stainless steel is magnetic. It is a martensitic stainless steel (also known as AISI 440B) that is ferromagnetic, meaning it can be attracted to a magnet. Its magnetic properties are due to its high carbon content and martensitic microstructure, which make it a magnetic steel.
Applications
Cutlery Industry: Production of high-quality knives and cutting tools.
Medical and Surgical: Manufacturing of surgical instruments and medical devices.
Industrial Components: Fabrication of machine knives, gears, and other tools requiring high strength and durability.
Bearings: Use in ball bearings for mechanical engineering and automotive applications.
Food Processing: Utensils and equipment resistant to acids and food juices.
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