What material is 1.4112 ?
1.4112 stainless steel, also known as AISI 440B and X90CrMoV18, is a high-carbon martensitic chromium steel. This stainless steel is also known as cutlery steel; the material is magnetic and possesses extremely high hardness and wear resistance, as well as good corrosion resistance. This material is also used in the pump industry, tool manufacturing, the production of mechanical engineering components, and the manufacture of equipment for the food industry. This stainless steel is not suitable for cold heading or cold forming.
What is 1.4112 stainless steel equivalent to?
1.4112 stainless steel is equivalent to AISI 440B and X90CrMoV18 according to EN norms. It is a high-hardness, wear-resistant, martensitic chromium stainless steel with good polishability, commonly used for knives, surgical tools, and in the food industry due to its excellent cutting edge retention and corrosion resistance in mild environments.
X90CrMoV18 equivalent material
X90CrMoV18 is the European standard (EN) designation for a high-carbon martensitic stainless steel. Its main equivalent is AISI 440B (or UNS S44003), also known as the German standard grade 1.4112. Other related steel grades include AISI 440C (with a higher carbon content) and AISI 440A (with a lower carbon content), and X90CrMoV18's properties lie between these two, exhibiting balanced characteristics.
1.4112 Chemical Composition(%):
| Steel Grade | C | Si | Mn | P | S | Cr | Mo | V |
|---|---|---|---|---|---|---|---|---|
| 440B | 0.75-0.95 | 1.0 max | 1.0 max | 0.040 max | 0.030 max | 16.0-18.0 | 0.75 max | / |
| 1.4112 | 0.85-0.95 | 1.0 max | 1.0 max | 0.040 max | 0.030 max | 17.00-19.00 | 0.90-1.50 | 0.07-0.12 |
1.4112 Stainless Steel Mechanical Properties
| Property | 1.4112 Stainless Steel |
|---|---|
| Yield Strength (Rp0.2) | ≥ 600 MPa |
| Tensile Strength (Rm) | 750 - 950 MPa |
| Elongation (A50mm) | ≥ 12% |
| Hardness (HB) | 280 - 320 HB |
| Impact Toughness (Charpy) | ≥ 30 J at -20°C |
| Modulus of Elasticity | 210 GPa |
| Density | 7.80 g/cm³ |
| Fatigue Strength | ~ 200 MPa (varies with processing) |
1.4112 stainless steel heat treatment
Annealing: 440B stainless steel is annealed at 843-871°C (1550-1600°F) and then cooled very slowly in a furnace.
Hardening: 440B stainless steel is heated at 760°C (1400°F), soaked at 1010°C (1850°F) and finally cooled in oil or air.
Tempering: 440B stainless steel is tempered at 148°C (300°F) to obtain maximum properties and the maximum hardness that can be obtained is RC58.
440A vs. 440B vs. 440C Stainless Steel
440A, 440B, and 440C are all martensitic stainless steels, differing primarily in their carbon content. 440C has the highest carbon content, resulting in the highest hardness and wear resistance (making it ideal for high-end bearings and robust knives), while 440A has the lowest carbon content, offering the best corrosion resistance and toughness (suitable for diving knives). 440B has an intermediate carbon content and is commonly used for general-purpose cutting tools and kitchen knives where toughness is important.
GNEE currently offers 440A, 440B, and 440C stainless steel in stock, including: plates, sheets, coils, strips, tubes, bars, and wires. In addition, we offer a variety of surface finishes for you to choose from, such as: No.1, 2B, 2D, BA, No.3, No.4, HL, No.8, sandblasting, etc.
We guarantee 100% quality. We will never deliver any defective products to our customers. Please feel free to contact us to customize your required product specifications, including shape, condition, surface treatment, and processing techniques.
