China 4cr5w2vsi

Cr5W2VSi 4Cr5W2VSi cooled hardened steel is a hot work die steel. In the high temperature thermal strength, hardness, wear resistance, toughness and good thermal fatigue properties. Using ESR, can more effectively improve the performance of the horizontal steel. The steel used to manufacture hot extrusion die and mandrel, aluminum, zinc die casting of light metal, hot forging and heat-resistant steel, structural steel used in tools, and some parts molded with high-speed hammer die.

Chemical composition　4Cr5W2VSi chemical composition of steel (GB / T 1299-2000) w /%

C	Si	Μn	Cr	W	V	P	S
0.32～0.42	0.80～1.20	≤0.04	4.50～5.50	1.60～2.40	0.60～1.00	≤0.30	≤0.30

Thermal processing

4Cr5W2VSi steel thermal processing conditions

Project	Heating temperature / ℃	On forging temperature / ℃	Final forging temperature / ℃	Cooling
Ingot Billet	1140～1180 1100～1150	1100～1150 1080～1120	925～900 900～850	Slow cooling (or pit sand cold cold) Slow cooling (or pit sand cold cold)

Physical properties

4Cr5W2VSi physical properties of steel are shown in Table 3-7-2 to Table 3-7-4.

Table 3-7-2 4Cr5W2VSi critical temperature of steel　　

Critical point	Ac1	Ac3	Ar1	Ar3	Ms	Mf
Temperature (approximate) / ℃	800	875	730	840	275	90

Table 3-7-3 4Cr5W2VSi steel wire (swelling) expansion coefficient　　

Temperature / ℃	22～100	22～200	22～500	22～600
Line (swelling) expansion coefficient / ℃	7.6×10	8.7×10	11.6×10	12×10

Table 3-7-4 4Cr5W2VSi modulus of elasticity of steel　　

Temperature / ℃	20	100	200	300	400	500	600
Elastic modulus E / MPa	230000	226000	210000	210000	203000	192000	178000

Chemical composition 4Cr5W2VSi chemical composition of steel (GB / T 1299-2000) w /%

Chemical composition　4Cr5W2VSi chemical composition of steel (GB / T 1299-2000) w /%