5CrNiMoV

　China Brand: 5CrNiMoV
Steel types: high abrasion resistance Die Steel

　　
　　一、 the chemical composition:

Element	C	Si	Mn	P	S	Cr	Mo	Ni	V
Content	0.5~0.6	≤0.35	0.5~0.8	≤0.03	≤0.03	0.8~1.1	0.35~0.5	1.4~1.8	0.1~0.3

二、the main features
Metallurgical characteristics of

* Component design features: toughness, high strength, good wear resistance.
* The use of electric arc furnace (EAF) + refining (LF) + vacuum (VD) of high purity steel production mold, good performance.
Heat treatment
* Annealing :760-780 ℃ Hardness :197-241HB
* Quenching temperature :890-910 ℃, oil cooling, hardness: 61.5HRC
* Tempering temperature :420-550 ℃, tempering twice
* Hardness :38-47HRC
※ This steel is cooled in the air can be hardened, and easy to form white spots, so the slow cooling after forging.
※ For large forgings, must be placed in the oven at 600 ℃, the temperature consistent, and then slowly cooled to 150-200 ℃, then cooling in air.
※ For large forgings, it is recommended to 150-200 ℃ in the cooling immediately after the tempering heat.
Third, the performance benefits and uses
(1), highlighting the advantages
* Excellent hardenability.
* High strength.
* Excellent abrasion resistance.
(2) use
The various kinds of steel used to make large and medium-sized forging die.
Physical nature

* Coefficient of expansion

Temperature / ℃	100~250	250~300	350~600	600~700
Expansion coefficient / ℃ -1	12.55*10-6	14.1*10-6	14.2*10-6	15*10-6

　Mechanical nature of the quenching temperature hardness curve
Tensile strength properties
Performance against tempering
Impact toughness
Heat treatment