P2000 / 1.4452
Staybrite® 4435/4441WCQ+ is a state-of-the-art, fully austenitic, remelted stainless steel (ESR), CrNiMo type with about 18 % Cr, 14 % Ni, 2.7 % Mo.
Excellent polishing is one of the main requirements for the highly qualified materials used in the watch industry. This is why Staybrite® 4435/1.4441WCQ+ has been specially developed: A very high polishability and improved corrosion resistance, for the production of cases, bottoms, rings, circles, and watch straps.
The obtaining of a polishing of very high level and an incomparable shine, results from a specific chemical analysis and a very great mastery of the remelting process of the alloy. This allows also to guarantee a homogeneous and controlled structure (inclusions) as well as a very fine grain and the absence of ferrite.
Staybrite® 4435/1.4441WCQ+ was developed by Hempel Special Metals AG, Dübendorf/Zürich, Switzerland.
Chemical composition of Alloy P2000
| C | Mn | Cr | N |
|---|---|---|---|
| ≤ 0.15 | % 12.0-16.0 | % 16.0-20.0 | % 0.75-1.00 |
| Mo | Nb | Fe | Ni |
| % 2.5-4.2 | ≤ 0.25 | rest | nickel free |
Mechanical properties of Alloy P2000
| solution heat treated | typical values |
|---|---|
| tensile s Rm | 980-1120 MPa |
| yield strength Rp 0,2 | 610-720 MPa |
| elongation after fracture | 55-65 % |
| reduction of area A | 65-75 % |
| cold worked precipitation hardened | typical values |
| tensile strength Rm | over 2000 MPa possible |