SUH446、S44600

Characteristics and scope of application

SUH446 heat-resistant steel is highly resistant to high temperature and corrosion, and does not produce scales that are easily peeled below 1082 ℃. SUH446 heat-resistant steel is used in the combustion chamber.

 

chemical composition

Grade	C≤	Si≤	Mn≤	S≤	P≤	Cr	N≤
SUH446	0.20	1.00	1.50	0.030	0.040	23.00 27.00	0.025

 

Mechanical properties

Tensile strength σb (MPa): ≥510

Conditional yield strength σ0.2 (MPa): ≥275

Elongation δ5 (%): ≥20

Section shrinkage ψ (%): ≥40

Hardness: ≤201HB

 

Heat treatment specifications and metallographic structure

Heat treatment specification: Annealing 780 ～ 880 ℃ Quick cooling.

Metallographic structure: The structure is characterized by ferrite type.

 

delivery status

Generally, it is delivered in the state of heat treatment specification, and the type of heat treatment is indicated in the contract; if it is not specified, it is delivered in the state of no heat treatment.