Main performance comparison of several heat-resistant steels
|
order number |
name |
intensity |
Heat-resistant temperature |
elevated temperature property |
scope of application |
|
1 |
15CrMo |
same as |
≤500℃ |
550℃ produced high temperature changes with a significant decrease in intensity |
Boiler steam pipe |
|
2 |
20CrMo |
same as |
≤520℃ |
550℃ produced high temperature changes with a significant decrease in intensity |
Boiler heat insulation plate, steam tube |
|
3 |
25Cr2MoV |
preferably |
≤530℃ |
High temperature performance is improved, and the high temperature relaxation performance is good |
Rotors, valves, and various fasteners. |
|
4 |
4Cr3Si4 |
preferably |
≤700℃ |
High temperature performance is good, it can replace 4Cr9Si2, can not be cold processing |
Gasoline engine, diesel engine valves and spare parts. |
|
5 |
4Cr9Si2 |
good |
≤700℃ |
High temperature performance is good, it can replace 4Cr10Si2Mo, can not be cold processing |
Diesel engine exhaust valve, heating furnace parts. |
|
6 |
4Cr10Si2Mo |
good |
≤750℃ |
High temperature performance, reduced tempering brittleness, can not be cold processing |
High-load diesel engine exhaust valves and spare parts. |
|
7 |
1Cr13 |
Good toughness |
≤700℃ |
Can moderate heat processing deformation, high temperature strength is general |
Blade, heating equipment fittings, bolts, nuts |
|
8 |
45#/35# |
Suitable for regulating the mass state, easy to produce crack |
≤350℃ |
Good cutting performance, poor high temperature strength |
Gear, shaft, pins and other mechanical parts |
|
9 |
40Cr |
The tensile strength is about 20% higher than that of 45 # steel |
≤400℃ |
High temperature strength is better than 45 # steel, low temperature toughness is good. |
Gear, shaft, nuts and other mechanical parts |
