What is 1.4542 material?
1.4542 material is a European designation for a high-strength, corrosion-resistant martensitic stainless steel known as 17-4 PH (Precipitation Hardening) or AISI 630, containing 17% chromium, 4% nickel, plus copper and niobium, prized for achieving high hardness via heat treatment for aerospace, medical instruments, and general engineering parts, offering a balance of strength, toughness, and corrosion resistance.
What is 1.4542 material equivalent to?
The primary equivalents for 1.4542 stainless steel are 17-4 PH, AISI 630, and UNS S17400. It is also sometimes referred to by its EN chemical designation, X5CrNiCuNb16-4.
Spec: EN 10088-3:2005
1.4542 SS Chemical Composition
| Chemical Element | % Present |
|---|---|
| Carbon (C) | 0.0 - 0.07 |
| Chromium (Cr) | 15.00 - 17.00 |
| Manganese (Mn) | 0.0 - 1.50 |
| Silicon (Si) | 0.0 - 0.70 |
| Phosphorous (P) | 0.0 - 0.04 |
| Sulphur (S) | 0.0 - 0.03 |
| Nickel (Ni) | 3.00 - 5.00 |
| Copper (Cu) | 3.00 - 5.00 |
| Molybdenum (Mo) | 0.0 - 0.60 |
| Niobium (Columbium) (Nb) | 0.0 - 0.45 |
| Iron (Fe) | Balance |
Physical Property
| Physical Property | Value |
|---|---|
| Density | 7.75 g/cm³ |
| Thermal Expansion | 10.8 x10^-6 /K |
| Modulus of Elasticity | 196 GPa |
| Thermal Conductivity | 18.4 W/m.K |
| Electrical Resistivity | 0.8 x10^-6 Ω .m |
Bar - Solution Annealed - Up to 100mm Dia. / Thickness
| Mechanical Property | Value |
|---|---|
| Tensile Strength | 1200 Max MPa |
| Hardness Brinell | 360 Max HB |
Bar - at P800 - Up to 100mm Dia / Thickness
| Mechanical Property | Value |
|---|---|
| Proof Stress | 520 Min MPa |
| Tensile Strength | 800 - 950 MPa |
| Elongation A | 18Min % |
Bar - at P930 - Up to 100mm Dia. / Thickness
| Mechanical Property | Value |
|---|---|
| Proof Stress | 720 Min MPa |
| Tensile Strength | 930 - 1100 MPa |
| Elongation A | 16 Min % |
Bar - at P960 - Up to 100mm Dia. / Thickness
| Mechanical Property | Value |
|---|---|
| Proof Stress | 790 Min MPa |
| Tensile Strength | 960 - 1160 MPa |
| Elongation A | 12 Min % |
Bar - at P1070 - Up to 100mm Dia. / Thickness
| Mechanical Property | Value |
|---|---|
| Proof Stress | 1000 Min MPa |
| Tensile Strength | 1070 - 1270 MPa |
| Elongation A | 10 Min % |
Applications
Due to the high strength of precipitation-hardening stainless steel, its applications are mainly concentrated in the aerospace and other high-tech industries. Application areas include: gears, valves and other engine components, high-strength shafts, turbine blades, molds, and nuclear waste storage tanks.
Corrosion resistance of 1.4542 stainless steel
1.4542 (17-4 PH) stainless steel offers good to excellent corrosion resistance, comparable to Type 304 in many freshwater/atmospheric conditions, but it's less resistant to pitting/crevice corrosion in stagnant seawater or high chloride, where 316L excels, though overaging (like H1150) improves resistance and toughness, making it great for marine, aerospace, and chemical uses needing high strength.
Is 1.4542 stainless steel magnetic?
Yes, 1.4542 (also known as 17-4 PH) stainless steel is magnetic. It is a type of precipitation-hardening martensitic stainless steel, and materials in this category are generally magnetic due to their ferromagnetic properties.
What are the differences between 1.4542 and 1.4548 stainless steel?
1.4542 (17-4 PH) and 1.4548 are essentially the same high-strength, precipitation-hardening stainless steel grade (AISI 630, UNS S17400), known for combining high strength, good toughness, and corrosion resistance, with differences primarily in naming conventions (EN vs. UNS) and sometimes production methods like remelting for higher purity in the 1.4548 designation, though they share similar compositions.
Our 17-4PH stainless steel is available in a variety of shapes and sizes, including plates, bars, tubes, wires, and flanges. Common processing methods include forging, rolling, machining, and welding. Due to its excellent mechanical properties and heat treatment flexibility, 17-4PH stainless steel generally yields good processing results.
Our 17-4PH stainless steel complies with various international standards and certifications, including ASTM A564 and AMS 5604. Its high strength and hardness allow it to withstand high loads and high-pressure environments. Our 17-4PH steel is not limited to the forms listed below and custom orders are welcome. Please feel free to inquire!
