Haynes 25

Haynes 25 is a high-temperature cobalt alloy, which is mainly composed of elements such as Co-Cr-Ni, the alloy has medium durability and creep strength below 815°C, excellent oxidation resistance below 1090°C, and has good processing and welding process properties.

Haynes 25 Chemical composition：

	Co	C	Cr	W	Mn	Fe	Si	P	S
Min	Bal	0.05	19	14	1	≤
Max		0.15	21	16	2	3	0.4	0.04	0.03

Haynes 25 Physical properties：

Density	9.13g/cm³
Melting point	1330~1410℃
Specific heat capacity	377J/(kg·℃)
Magnetic properties	not

Haynes 25Mechanical properties：

Standard number	variety	state	Tensile properties at room temperature				815℃Long-lasting performance			Grain size/grade
			σb/MPa	σp0.2/MPa	δ₅/%	Room temperaturehardness HV	σ/MPa	τ/h	δ₅/%
			≥					≥
辽新6-0041	Hot-rolled plate, cold-rolled sheet, strip	Solution treatment	890	370～550	35	≤290	165	24	10	2.5(1)
QJ/DT 01.63025	Cold-rolled strip	Annealing	1300	1100	6	380~ 450				9
QJ/DT 01.63073	Cold drawer	Solution treatment + cold drawing	862	310	20	HRC ≥34
QJ/DT 01.63079	Hot rolled rods	Solution treatment	860	340	35	HB≤282	165	24	10	3(2)
	Forgings, rings	Solution treatment	860	310	30	HB≤248	165	24	10

Haynes 25Alloy properties：

High Temperature Resistance: HuaNickel Haynes 25 alloy has excellent high temperature strength and creep resistance, and can maintain its stability and reliability in high temperature environments.

Corrosion resistance: Haynes 25 alloy has excellent corrosion resistance in acidic, alkaline and high-temperature atmospheres, and can effectively resist the erosion of corrosive media.

Mechanical properties: Haynes 25 alloy has high strength and hardness, which can meet some applications with high requirements for mechanical properties of materials.

Haynes 25Uses of alloys：

Haynes 25 alloy is used in the manufacture of high-temperature components such as aero-engine guide vanes, turbine outer rings, outer walls, vortex and sealing flakes.

Haynes 25Process performance：

Welding process: HuaNickel Haynes 25 alloy can be welded, resistance welded and brazed. Fusion welding can be done manually or automatically with an inert gas arc weld with a small energy input and a tungsten electrode or HHaynes 25 wire as the electrode. Submerged arc welding is not recommended to avoid large grains and embrittlement. Welding should be carried out in a solution state, and it should be quickly cooled after welding, followed by annealing.

Relevant standards：

GB/T 14992 、HB/Z140 、辽新6-0041 GH605 、QJ/DT 01.63025 、QJ/DT 01.63073  、QJ/DT 01.63079