12Cr1MoV hot rolled steel sheet

12Cr1MoV round steel has higher oxidation resistance and thermal strength. The creep limit of this steel is very close to the endurance strength value, and it has high plasticity in the case of permanent tension; the steel has good manufacturability and weldability, but it needs to be preheated to 300°C before welding and stress relief after welding. deal with. It is a steel grade widely used in high-pressure, ultra-high pressure, subcritical power station boiler superheaters, headers and main steam ducts. It still has high thermal strength and oxidation resistance at 580°C, and 12Cr1MoV steel plate has a higher durable plasticity. The production process is relatively simple, and the welding performance is good, but it is more sensitive to the normalizing cooling rate. Long-term use at 580°C will produce pearlite spheroidization.

12Cr1MoV hot rolled steel sheet Chemical Composition

Chemical Composition (%)
Steel Grade	C	Si	Mn	V		Cr	Mo
35CrMo	0.08～0.15	0.17～0.37	0.40～0.70	0.15～0.30		0.90～1.20	0.25～0.35

GB/T3077 12Cr1MoV alloy structure steel forged bar mechanical property：

Grade	Heat Treatment					Mechanical Property					BH
	Quench			Tempering		Tensile Strength	Yield Point	Stretching Rate after Breaking	Shrinkage	Impact Absorption Power	HB10/3000
	Heat Temperature, ℃		Coolant	Heat Temperature	Coolant						No More Than
	1st Quench	2nd Quench				No Less Than
12Cr1MoV	970	―	Air	750℃	Air	490 MPa	245 Mpa	22%	50%	71J	179

GB/T3077 12Cr1MoV alloy structure steel forged bar is widely used in high pressure, ultra high pressure, subcritical power plant superheater, set box etc. At 580 C, 12Cr1MoV alloy structure steel still has high thermal strength and antioxidant properties, and has high durable plasticity.