Product Details

Application, for example

In the use of Q+T usually,When carbon content for the lower limit of steel also can be used as a core strength requirements higher carburizing steel ;

Mainly used in the manufacture of cross section is larger in the medium-sized machinery manufacturing, work under high stress conditions of conditioning parts, such as shaft, shaft, and the high load of wheel, bolts, double-headed bolts, gears, etc;

In the chemical industry used in the manufacture of welding parts, plate and pipe welding structure and work in the medium containing nitrogen hydrogen temperature does not exceed 250 ℃ high pressure pipe;

In steam turbine, boiler manufacturing fasteners in the manufacture of work under 450 ℃, 500 ℃ under the high pressure flange and nut, is especially suitable for manufacturing 300 atmospheres, duct work under 400 ℃

The main features

High strength,toughness and hardenability,critical hardening in the oil diameter 15~70mm;

Good thermal strength,under 500 ℃ has the enough high temperature strength;

When the alloy elements in flash welding is quite good, but close to cap the weldability medium, and preheat to 175 ℃ or above before welding;

Machinability is good, the cold deformation when the plastic medium; When the heat treatment in the range of 300 ~ 350 ℃ has the first kind of temper brittleness;

Have a tendency to form white point.