1.4435/1.4441WCQ+
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 1.4435/1.4441WCQ+ - basic composition DIN 1.4435/1.4441 / X2CrNiMo18-14-3
| C | Si | Mn | P | S | Cr | Mo | Ni | Fe |
|---|---|---|---|---|---|---|---|---|
| ≤ % | ≤ % | ≤ % | ≤ % | ≤ % | % | % | % | |
| 0.03 | 0,8 | 2,0 | 0,03 | 0,005 | 2,5-3,0 | 13,0-15,0 | bal |
Mechanical properties of Staybrite 4435/4441WCQ+
| solution heat treated | typical values |
|---|---|
| Yield strength Rp 0,2 | > 190 N/mm2 |
| Tensile strength Rm | 490 - 690 N/mm2 |
| Elongation A | > 35 % |
| Hardness | > 150 HB |