Is it normal for 1Cr5Mo superheated steam pipes to rust?
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Is rusting normal during the welding of 1Cr5Mo superheated steam pipes during construction? Does it not belong to stainless steel?
The microstructure of 1Cr5Mo is martensite; it exhibits good oxidation resistance at around 650 degrees Celsius, good heat strength below 600 degrees Celsius, as well as good shock absorption and thermal conductivity, which makes it widely used in steam turbines. However, this type of steel has a strong tendency to harden and poor weldability
Steel that possesses antioxidant properties, sufficient high-temperature strength, and good heat resistance under high-temperature conditions is called heat-resistant steel.
I’m asking whether pipes made of this material will rust
Generally, the main body does not rust, but the welded areas may rust; it also depends on the type of medium.
It is normal for 1Cr5Mo to rust; materials such as 15CrMo and 12Cr1MoV also experience this
The welded area may rust, and it needs to be treated after welding!
Stainless steel can also rust, let alone something that isn’t stainless steel.
This material has a high alloy content; gas shielding at the root is required during welding, otherwise it is prone to oxidation