High temperature corrosion resistance, scale is not easy to peel off below 1082, used in combustion chamber,

Its main chemical components are:

Carbon 0.20, silicon 1.00, manganese 1.50, sulfur 0.030, phosphorus 0.040, chromium 23.0-27.0, copper 0.30 and nitrogen 0.25.

2Cr25N belongs to high chromium ferritic stainless steel with high Cr content, and its oxidation resistance is better than Cr 13 and Cr 18 ferritic stainless steel, especially suitable for use under severe temperature fluctuation. All kinds of heat-resistant parts can be made under the load of more than 950.

Process route of 2Cr25N and TP446- 1 stainless steel seamless pipes: non-vacuum melting-round ingot-steel ingot peeling-forging tube blank-air cooling-equipment extrusion blank-extrusion-water quenching-annealing-inspection-straightening-pickling-warehousing conditions.

Yield strength σ 0.2 (MPa): ≥ 275

Elongation Δ 5 (%): ≥ 20

Area shrinkage ψ (%): ≥ 40

Hardness: ≤20 1HB

Heat treatment specification and metallographic structure

Heat treatment specification: annealing at 780 ~ 880℃ and rapid cooling.

Metallographic structure: the microstructure is ferrite.

condition of delivery

Generally, the goods are delivered in the state of heat treatment specifications, and the type of heat treatment is indicated in the contract; If there is no stipulation, the goods shall be delivered without heat treatment.