4CrNi4Mo Hot Work Mold Steel

Grade 4CrNi4Mo is a Chinese tool and mould steel. It is a kind of hot work mold steel under GB/T 1299-2014 standard. The containing molybdenum element makes 4CrNi4Mo hot work mold steel has excellent toughness and high hardenability. 4CrNi4Mo mold steels are frequently used in hot work applications requiring toughness are relatively high hardness levels.

Grade 4CrNi4Mo Chemical Composition

C	Mn	Si	P	S
0.40-0.50	0.20-0.50	0.10-0.40	≤0.030	≤0.030
Mo	V	Ni	Cu	Cr
0.15-0.35	-	3.80-4.30	≤0.25	1.20-1.50

4CrNi4Mo Steel Hardness in Annealing Condition

Grade	Annealing delivery condition	Sample quenching hardness
	Hardness HBW	Quenching temperature	coolant	Rockwell hardness HRC
4CrNi4Mo	285 max.	840-870	Air or oil	Mark the test value as required

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