SHOMAC

The early high-purity HuaNickel SHOMAC is a super ferritic stainless steel with C+N≤150ppm produced by double vacuum smelting process.

SHOMAC Chemical composition：

	Cr	Mo	C	Si	Mn	N
Min	29	1.8	≤
Max	31	2.2	0.01	0.2	0.1	0.012

SHOMACPhysical properties：

Density p  /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℃)
7.6	9.85×10~6	17.9	0.46×10~6	64

SHOMACMechanical properties：

Materials and Condition	Plate and tube specifications	σp0.2/MPa	σb/MPa	δ/%	ψ/%	Hardness (HV)
高纯Cr30Mo2 Annealed state(900℃× 10～15min,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

SHOMACAlloy properties：

High-purity HuaNickel Cr30Mo2 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 aging.

SHOMACUses of alloys：

It can be used as a heat exchange equipment for cooling agent in water medium (including seawater) containing Cl-; 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.).

SHOMACProcess performance：

Welding process: high-purity HuaNickel Cr30Mo2 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 high-purity Cr30Mo2 steel is 900~1050°C heating, heat preservation and quenching.

Relevant standards：

GB/T 1220-1992