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High temperature Normalized seamless steel tubes 20MnNb6
Source:Xin Steel Industry Date:2018/10/15
High temperature Normalized seamless steel tubes 20MnNb6
Relative steel grades:20MnNb6,16Mo3,8MoB5-4,14MoV6-3,10CrMo5-5,13CrMo4-5,10CrMo9-10,
11CrMo9-10,25CrMo4,20CrMoV13-5-5,15NiCuMoNb5-6-4,7CrWVMoNb9-6,7CrMoVTiB10-10.
Main application:Non-alloy and alloy high temperature seamless steel pipes more used for building boilers and pressure vessels’parts.20MnNb6 seamless steel pipes have to be done Normalized heat treatment at temperature 900-960℃.
Rolling range:A) Diameter:1/2’’ to 36’’ B) Schedule:SCH20-SCHXXS C) O.D.:13.7MM-914.4MM D) Wall Thickness: 2.11MM-60MM E) Length: Max.17MM
Test: Low temperature impacting test,Ultrasonic examination,Heat treatment,Bending test,Eddy test,Hydrostatic test,High tension test.
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►Mechnical property for 20MnNb6 pressure vessel steel pipes:
|
Yield strength (≥Mpa) |
Tensile strength (≥Mpa) |
Elongation A min. % | ||||
|
T≤16 |
16<T≤40 |
40<T≤60 |
60<T≤100 |
|
Longitudinal |
Transverse |
|
355 |
345 |
335 |
- |
500-650 |
22 |
20 |
►Chemical composition for 20MnNb6 steel tubes (Cast Analysis Max%)
|
Main chemical elements composition of 20MnNb6 | |||||||
|
C |
Si |
Mn |
P |
S |
Cr |
V | |
|
0.22 |
0.15- 0.35 |
1.00-1.50 |
0.025 |
0.010 |
- |
- | |
|
Mo |
Ni |
Al total |
Cu |
Nb |
Ti |
Cr+Cu+Mo+Ni | |
|
- |
- |
0.060 |
0.30 |
0.015-0.10 |
- |
- | |
XINSTEEL INDUSTRIAL CO.,LTD offering high quality of seamless steel pipes 20MnNb6 from chinese national owned steel mills TPCO,BAOSTEEL,etc.,and keeping many thousands tons stock for alloy and non-alloy seamless steel pipes in our warehouses ready for shipment.