1.4501

HuaNickel 1.4501 is a super austenitic stainless steel known for its superior resistance to chloride pitting and crevice corrosion. This stainless steel performs well in a variety of corrosive environments, especially seawater and other chlorine-containing media, making it widely used in marine engineering, chemical equipment, food processing, and more.

1.4501 Chemical composition：

	Ni	Mo	Cr	N	C	Si	Mn	Cu	S	P
Min	23.5	6	20	0.18	–	≤
Max	25.5	7	22	0.25	0.03	0.1	2	0.75	0.03	0.04

1.4501 Physical properties：

Density/g·cm-3	Coefficient of thermal expansion/℃×10-6		Specific heat capacity/J·(kg·K)-1	Magnetic permeability/Oe(Oerst)	Young’s modulus of elasticity/GPa
8.06	100℃	500℃	461	1.003	195
	15.3	17.2

1.4501 Mechanical properties：

σb/MPa	σp0.2/MPa	δ/%	Hardness  ( H R B )
≥690	≥310	≥30	<240

1.4501 Alloy properties：

The solid solution state of super austenitic stainless steel of this composition has a single austenite, and there is no intermetallic phase, but if it is ≥ to 540 °C, there will be carbon, nitride and σ phase precipitation, for which the amount of chromium and molybdenum is at the upper limit of chemical composition will be more sensitive.

1.4501 Uses of alloys：

thin-walled tubes for seawater condensers; At the same time, it can also be used for important equipment and pipelines resistant to chloride local corrosion in paper and thermal power plants, FGD and offshore oil production platforms.

1.4501 Process performance：

Welding process:HuaNickel 1.4501 has good welding performance, and can be welded by the general process method of austenitic stainless steel. Since this steel is mostly used as a tube for heat exchangers, automatic welding or manual welding is recommended for the welding of pipes and tube sheets.

Heat treatment: HuaNickel1.4501 composition upper and lower limit test, short-term heating at 1065 °C can make the σ in 1.4501 steel containing 22% Cr, 7% Mo soluble in the matrix. The solution treatment temperature of this steel is 1065~1105 °C.

Relevant standards：

ASTM B 564-2004