D2 steel round bars 1.Diameter:10mm~500mm 2.Delivery Conditon:annealed, black/turned surface 3.Short Delivery time

D2 alloy steel round bars
Chemical Composition(%)
C	Si	Mn	P	S	Cr	Mo	V
1.50-1.60	0.10-0.40	0.15-0.45	≤0.030	≤0.030	11.0-12.0	0.60-0.80	0.90-1.10
Specialty
High penetration, high rigidity, high endurance, small distortion when quench, possess high rigidity of Cr12*210CrW12,.good tenacity, adapt to tool mould of complicated form.
Use
1. All kinds of cold stamping mold, cut blade and twisting thread board of high endurance and long life
Heat Treatment
1. Quench: recommend oil of 980-1040°c\wind(re-preheat~500 °c -850 °c )HRC64-62
2.  tempering: eliminate stress, stabilize framework, (180-200 °c )≥2 hours HRC63-62
3.Change of temperature of tempering and HRC rigidity (reference)
4.Annealing: 780-800 °c slow cooling
Melting Process
1. EAF: Electric Furnace+LF+VD(Optional)
2. ESR:  Electric Furnace+LF+VD+Eleroslag Remelted(Optional)
UT Class
According to Standard of SEP 1921/84,100% Volume, Level C/c, D/d or E/e
Tolerance on Quantity
+/-10% Per Size