1. Firepower electricity making
In order to promote the thermal efficiency of the boiler in heat engine plant, enlarging the equipments and increasing the temperature and pressure for the steam condition are the certain developing direction. Presently, the subcritical and supercritical boiler are industrialized, the applied material for superheat steel pipe can no longer satisfy the requirements, and austenite stainless steel with good hot strength like the 0Cr18Ni10Ti and 0Cr17Ni12Mo2 shall be regarded as new materials.

2. Waterpower electricity making
The impeller of water turbine for Waterpower is usually made of stainless steel, in the early days the casting form were mostly used, as the water turbine developed toward big capacity and high fall, in order to improve the performance of the impeller, now forged products are in use, and the steel type has changed from the Cr13 type in early days to the 00Cr13Ni5Mo steel with good welding quality, and the use of stainless steel for water turbine impeller is shown in the following table. Besides, some anti-corrosion and anti-abrasion components in waterpower plant have been successfully used the 0Cr18Ni9N (304N) and 2205 double phase steel clad plate.

The application of stainless steel in water turbine impeller

Form of water turbine	Power , MW	Impeller diameter , mm	Material
French type	70 48 47 47 45 23 96 42	2480 3010 2540 2500 2630 1950 3700 2950	Cr13 Cr13 Cr18-Ni8 13Cr bead weld 13Cr bead weld Cr18-Ni8 bead weld Cr18-Ni8 bead weld
Screw propeller type	30 21.5 17.55 24	3900 4750 2750 4100	Cr13 Cr13 Cr18-Ni8 Cr13 bead weld
Perle T. impact type	26.6 16.7	2240 2080	Cr13 Cr13
Gezhou Dam waterpower plant			00Cr13Ni5Mo 0Cr13Ni5Mo