15NiCuMoNb5-6-4 seamless pipe features

Feature: The influence of merchantmen on property of 15NiCuMoNb5-6-4 pipe is researched. It is found that hardness descend and then raise, and strength gradually descend when tempering temperature ascend. Hardness descend and toughness raise when tempering time add. The best tempering technical of this steel is that tempering temperature is 630-660℃.

15NiCuMoNb5-6-4 ：EN 10216-2:2003

Grade

15NiCuMoNb5-6-4

≤0.17

0.25-0.50

0.80-1.20

≤0.025

≤0.010

≤0.30

0.25-0.50

1.00-1.30

≤0.050

0.50-0.80

Grade

Yield strength

Tensile strength

elongation

Impact energy

15NiCuMoNb5-6-4

T≤16

16<T≤40

40<T≤60

60<T≤100

440

610-780

Application: The characteristics of this steel is of high strength and high yield limit than 20G steel 40%, using temperature is 400 ℃, can be used as a pipe high pressure pipe wall temperature of 500 degrees Celsius, or as high parameter thermal power generating units, such as supercritical units in the boiler, steam water separator, collection box, steam generator, steam pipeline and nuclear power the equipment such as high temperature and high pressure parts.

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