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■ Overview
EN 10216-2 european specifications for seamless tubes and pipes for high pressure boilers,steel grade 25crmo4 seamless steel tubes are mainly used in Steam Boilers,Power Generation,Fossil Fuel Plants,Electric Power Plants.These tubes shall be free from external and internal surface defects that can be detected by visual examination.
■ Full Data
Technical Requirements & Additional Services:
♦ Quenched Heat treatment at Temp.860-900 Deg.C and Tempered treatment at 620-680 Deg.C
♦ Flattening test according to EN 10233
♦ Ring Tensile test comply to EN 10237
♦ Quenched Heat treatment at Temp.860-900 Deg.C and Tempered treatment at 620-680 Deg.C
♦ Flattening test according to EN 10233
♦ Ring Tensile test comply to EN 10237
♦ Drift expanding test comply to EN 10234
♦ Impacting test comply to EN 10045-1
♦ Issued Orginal Mill test certificate under EN10204 3.1/3.2 FORMAT
♦ Surface Protection:Black,Varnish,Hot Dip Galvanized,Coating with shop prime
♦ Impacting test comply to EN 10045-1
♦ Issued Orginal Mill test certificate under EN10204 3.1/3.2 FORMAT
♦ Surface Protection:Black,Varnish,Hot Dip Galvanized,Coating with shop prime
■ Techicals
►Mechnical property for 25CrMo4 boiler steel pipes:
|
25CrMo4 |
||||
|
Yield strength (≥Mpa) |
T≤16 |
16<T≤40 |
40<T≤60 |
60<T≤100 |
|
355 |
355 |
355 |
- |
|
|
Tensile strength (≥Mpa) |
540-680 |
|||
►Chemical composition for 25CrMo4 Boiler steel pipes (Heat Analysis Max%)
|
Main chemical elements composition of 25CrMo4 |
||||
|
C |
Si |
Mn |
P |
S |
|
0.22-0.29 |
0.40 |
0.60-0.90 |
0.025 |
0.020 |
|
Cr |
Mo |
Ni |
Alt |
Cu |
|
0.9-1.2 |
0.15-0.30 |
0.30 |
0.04 |
0.30 |
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