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■ Overview
GB/T 5310-2008 standard high tensile strength alloy seamless steel pipes and tubes 12Cr2MoWVTiB with minimum yield strength at 345Mpa when rolling.Normaling temperatures shall be done within range 1020-1060 Degree Centigrade.
■ Full Data
Technical Requirements & Additional Services:
♦ Normalized at Temp.1020-1060 Deg.C and Tempered Heat treatment at Temp.760-790 Deg.C
♦ Flattening test according to GB/T 246
♦ Bending test comply to GB/T 232
♦ Normalized at Temp.1020-1060 Deg.C and Tempered Heat treatment at Temp.760-790 Deg.C
♦ Flattening test according to GB/T 246
♦ Bending test comply to GB/T 232
♦ Expansion test comply to GB/T 242
♦ Microstructure examination comply to GB/T 13298
♦ Issued Orginal Mill test certificate under 3.1/3.2 FORMAT
♦ Surface Protection:Black,Varnish,Hot Dip Galvanized,Coating with shop prime
♦ Microstructure examination comply to GB/T 13298
♦ Issued Orginal Mill test certificate under 3.1/3.2 FORMAT
♦ Surface Protection:Black,Varnish,Hot Dip Galvanized,Coating with shop prime
■ Techicals
►Mechnical property for 12Cr2MoWVTiB boiler steel pipes:
|
12Cr2MoWVTiB |
|
|
Yield strength (≥Mpa) |
345 |
|
Tensile strength (≥Mpa) |
540-735 |
►Chemical composition for 12Cr2MoWVTiB boiler steel pipes (Heat Analysis Max%)
|
Main chemical elements composition of 12Cr2MoWVTiB |
||||||
|
C |
Si |
Mn |
P |
S |
Cr |
W |
|
0.08-0.15 |
0.45-0.75 |
0.45-0.65 |
0.025 |
0.015 |
1.60-2.10 |
0.30-0.55 |
|
Cu |
Ni |
Mo |
V |
Ti |
B |
Nb |
|
0.20 |
0.30 |
0.50-0.65 |
0.28-0.42 |
0.08-0.18 |
0.002-0.008 |
- |
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