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■ Overview
GB/T5310 specifications grade Chromium-Molybdenum alloy seamlss steel pipes and tubes 12CrMoG shall be done Normalized and Tempered heat treatment with Normaling temperature within 900-960 Deg.C and Tempering temperature at 670-730 Deg.C.12CrMoG is one common steel grade in Seamless boiler steel pipes and tubes.
■ Full Data
Technical Requirements & Additional Services:
♦ Normalized at Temp.900-960 Deg.C and Tempered Heat treatment at Temp.670-730 Deg.C
♦ Flattening test according to GB/T 246
♦ Bending test comply to GB/T 232
♦ Normalized at Temp.900-960 Deg.C and Tempered Heat treatment at Temp.670-730 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 12CrMoG boiler steel pipes:
|
12CrMoG |
|
|
Yield strength (≥Mpa) |
205 |
|
Tensile strength (≥Mpa) |
410-560 |
►Chemical composition for 12CrMoG boiler steel pipes (Heat Analysis Max%)
|
Main chemical elements composition of 12CrMoG |
|||||
|
C |
Si |
Mn |
P |
S |
Cr |
|
0.08-0.15 |
0.17-0.37 |
0.40-0.70 |
0.025 |
0.015 |
0.40-0.70 |
|
Cu |
Ni |
Mo |
V |
Ti |
Zr |
|
0.20 |
0.30 |
0.44-0.55 |
0.08 |
- |
- |
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