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Component Specification(EN 10222-2-2017)(similarly hereinafter)
C |
0.08~0.20 |
Cr |
≤0.30 |
Ti |
≤0.03 |
Si |
≤0.40 |
Cu |
≤0.30 |
V |
≤0.02 |
Mn |
0.90~1.50 |
Mo |
≤0.08 |
Cr+Cu+Mo+Ni |
≤0.70 |
P |
≤0.025 |
Nb |
≤0.01 |
carbon equivalent |
≤0.45 |
S |
≤0.015 |
Ni |
≤0.30 |
[TJC STEEL] |
|
Heat Treatment
name |
code |
technology |
normalizing[TJC STEEL] |
N |
880~920℃,air cooling |
Normal + tempering |
NT |
880~920℃,air cooling、oil cooling、water-cooling 600~640℃,air cooling、furnace cooling |
Quenching + tempering |
QT |
Room-Temperature Mechanical Property
SIZE |
tR≤35 |
35<tR≤160 |
|
yield strength ReH(MPa) |
≥280 |
≥255 |
|
strength of extension Rm(MPa) |
460~580[TJC STEEL] |
||
percentage elongation after fracture A% |
l |
≥23 |
|
tr/t |
≥21 |
||
ballistic work J |
l |
≥48 |
|
tr/t |
≥27 |
Strong Non - Proportional Extension of Requirements for High Temperature Environments Rp0.2(MPa)
SIZE |
tR≤50 |
50<tR≤160 |
|
T |
100℃[TJC STEEL] |
≥250 |
≥210 |
150℃ |
≥235 |
≥200 |
|
200℃ |
≥225 |
≥195 |
|
250℃ |
≥205 |
≥185 |
|
300℃ |
≥185 |
≥170 |
|
350℃ |
≥170 |
≥155 |
|
400℃ |
≥155 |
≥135 |
Applications:
P280GH is a kind of carbon steel with specified high temperature characteristics, and has good impact toughness and welding performance.Its use is similar to 16Mn, such as shell and tube heat exchanger carbon steel tube plate, flange, etc.The important use of P280GH is in the field of nuclear power, in the nuclear [TJC STEEL]power components are mainly used as steam generator main steam system, water supply control system, auxiliary water supply system of rolling pipe fittings or forged pipe fittings, or steam generator main steam system forging or die forging elbow.