Summary of Forging Temperature Range of Various Ingot

Forging Temperature Range of Ingot

Steel Group	Steel number	Initial forging temperature	Final forging temperature	Precision forging temperature
Ⅰ	A3～A5,10～45,15Mn～30Mn,15Cr～30Cr	1250	750	700
	A6,(15～42)CrMo	1220	750	700
	20SiMn～35SiMn,20MnMo,18MnMoNb,40Cr
	14MnMoV,50～55,40MnMoB，40Mn～50Mn
Ⅱ	37SiMn2MoV,42MnMoV,60CrMo,34CrMo1A,38SiMnMo	1220	750	700
	38CrMoAl,(45～55)Cr,60～65,38CrMnMo,38CrMnSi,
	38CrMnAlA,12CrMoV,35CrMoV,17CrMo1V,30CrMnSi,35CrMnSi,35Mn2～50Mn2,20MnMoNb,14MnMoV,42MnMoV
	20CrMnMo,30CrMn2MoB,50SiMn,5CrMnSiMoV
	(50～65)Mn,(50～60)Mn2,35CrAl,(35～45)SiMn，30Cr2MoV	1200	750	700
Ⅲ	18CrMnMoB,18CrMnTi,20CrMnTi,12Cr3Mo,(18～35CrNiW)	1200	750	700
	20Cr2Ni4A,20Cr2Mn2MoA,60SiMnMo,55Si2MnV,40CrNiMo
	WCrMnSi,5CrNiW,5CrMnMo,5CrNiMo,50CrMnMo,60CrMnMo,50CrNiMo,  50Mn18Cr4,50Mn18Cr4N,50Mn18Cr4WN,	1200	800	750
	25Cr2Ni4MoV,22Cr2Ni4MoV,25CrNiMoV～25CrNi3MoV,28CrNi3MoV22Cr12Mo1V
	3Cr2W8V,60CrMnV,60CrW2Si,70Cr3Mo,86Cr2MoV,12Cr2MoV
	4SiMnMoV,34CrNi1Mo～34CrNi3Mo，PCrNi1Mo～PCrNi3Mo,26Cr2Ni4MoV,25CrNiMoV,Cr17Ni2,20CrNi4A，28CrNi1Mo,30Cr1Mo1V,	1220	850	750
	W18Cr4V,Cr5Mo,9Cr2W,,7Cr3,9CrSi,9Cr2,9Cr,9Cr2Mo,9CrV,9Cr2V,9Cr2W,8CrMoV,3Cr2W8V	1200	850	750
	Cr17Mn4,(4～6)CrW2Si,20Cr3WMoV
	T7～T8,(50～60)Si2,60SiMn	1180	850	800
	1Cr18Ni9Ti,(1～4)Cr13,CrWMn,2Cr1818Ni11Ti,Cr5Mo,
	T10～T12,Cr12Mo,Cr17,T9A,Cr17Ni2,3Cr2Mo,3Cr2MnNiMo(718)	1180	850	800
	GCr15,GCr15SiMn,GMnMoV,

Explain:
1. The furnace temperature is allowed to be higher than the material temperature 30-50 C in the heating section and before reaching the minimum heat preservation.
2. When the minimum heat preservation is reached, the furnace temperature shall not exceed the prescribed maximum forging temperature (maximum heating temperature).
3. When there is a contradiction between the highest forging temperature and the technological regulations, it shall be carried out in accordance with the technological regulations.
4. When the ingot is insulated, the calculation begins from the surface to the highest forging temperature.