00Cr30Mo2TiNb4

00Cr30Mo2TiNb is an improved super ferritic stainless steel with ultra-low carbon, nitrogen and Ti+Nb double stabilized high-purity Cr30Mo2. The latter can be produced by off-furnace refining processes such as VOD due to the increase of the amount of C+N to ≤0.03%, which not only reduces the production cost, but also makes 00Cr30Mo2TiNb have better intergranular corrosion resistance and can refine the grains due to the double stabilization of Ti+Nb, but the toughness will be lost.

00Cr30Mo2TiNb4Chemical composition：

	C	Si	Mn	Cr	Mo	Ti	Nb	AI	N
Min	≤
Max	0.007	0.02	0.2	30.2	2.08	0.17	0.19	0.09	0.012

00Cr30Mo2TiNb4Physical properties：

Densityp  /g·cm-3	Linear expansion coefficientg/℃-1 (20～100℃)	Thermal conductivityA/ W·(m·K)-1100℃	Specific heat capacityc /J·(kg·℃)-1	Resistivity/μΩ ·cm(20℃)
7.64	9.7×10-6	17.8	0.46×10-6	65

00Cr30Mo2TiNb4Mechanical properties：

Materials and Condition	Plate and tube specifications	σp0.2/MPa	σb/MPa	δ/%	ψ/%	Hardness(HV)
HighpurityCr30Mo2Annealedstate(9001015min,Water)	Hot rolled plate8mm	329～588	529～676	21～22	66～70	190～280
	Cold-rolled plate3mm	392～894	539～863	32	53～72	180～300
	After the cold-rolled plate is welded	392～412	539～559
00Cr30Mo2TiNb Annealed state	Cold-rolled plate1.5mm	431	568	28		192
	Pipe wall thickness2mm	560	610	37		205

00Cr30Mo2TiNb4 Alloy properties：

00Cr30Mo2TiNb is a typical high-chromium-molybdenum ferritic stainless steel, their microstructure is a pure ferrite structure with body-centered cube, and there are α’ phases and σ(x) intermetallic phases and carbon and nitride phases on the matrix during the aging process.

00Cr30Mo2TiNb4Uses of alloys：

It can be used as a heat exchange equipment for water medium containing Cl- (including seawater) as coolant; It can be used for evaporators in the diaphragm alkali production process, acetic acid, urea-resistant devices and components, roofs (including eaves), curtain walls and various decorative materials for large coastal buildings (airports, restaurants, large landmark buildings, etc.).

00Cr30Mo2TiNb4Process performance：

Welding process: 00Cr30Mo2TiNb has good weldability, no intergranular corrosion tendency after welding, and there is no obvious difference in corrosion resistance before and after welding in some corrosive media.

Heat treatment: The heat treatment process of 0 0Cr30Mo2TiNb steel is 900~1050 °C heating, heat preservation and quenching.

Relevant standards：JIS G 4305-2021