Description

3cr2w8v热作模具钢,是常用的压铸模具钢,有较高的强度和硬度、耐冷热疲劳性良好,且有较好的淬透性,但其韧性和塑性较差。适用制作高温、高应力下,不受冲击负荷的凸模、凹模,如压铸模、热挤压模、精锻模、有色金属成型模等。

3Cr2W8V hot working die steel is a common die casting die steel. It has high strength and hardness, good cold and hot fatigue resistance, and good hardenability, but its toughness and plasticity are poor. It is suitable for making punch and die without impact load under high temperature and high stress, such as die casting die, hot extrusion die, precision forging die, nonferrous metal forming die, etc.

Worldwide Equivalents of Grade 3Cr2W8V Steel

/ChinaUSAGermanyJapanFtanceEngland
StandardGB DIN,WNrJISAFNORBS
Grade3Cr2W8VH21X30WCrV9-3SKD5Z30WCV9B3Cr2W8V
/ItalyPolandCzechiaRussiaAustriaInter
StandardUNIPNCSNgostONORMISO
GradeX30WCrV9-3KUWWW197213KH2V8FW100X30WCrV9-3
 
Chemical Composition of 3Cr2W8V Steel Material%
CVSiMnPSCrW
0.3-0.40.2-0.5≦0.4≦0.4≦0.03≦0.032.2-2.77.5-9.0

Mechanical Properties of 3Cr2W8V Steel

Proof strength
Rp0.2(MPa)
Tensile strength
Rm(MPa)
Impact energy
KV(J)
Elongation at fracture
A(%)
Reduction in cross section on fracture
Z(%)
As-Heat-Treated ConditionBrinell hardness(HBW)Proof strength
Rp0.2(MPa)
139(≥)865(≥)122444Solution and Aging,Annealing,Ausaging,Q+T,etc411139(≥)

Physical properties of 3Cr2W8V Steel

PropertyDensity
kg/dm3
Temperature T
°C/F
Specific heat
J/kgK
Thermal conductivity
W/mK
716(≥)143(≥)344341
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
614871395Solution and Aging,Annealing,Ausaging,Q+T,etc432

Heat Treatment 

Forging

Heat to 900-1100 °C(1652-2012°F),forged temperature not below 843℃(1550°F)

Annealing

Slowly heated to 800~850 ºC(1472~1562°F) and allow enough times, let the steel to be thoroughly heated, Then cool slowly at Maximum of 4°C(40°F)per hours. The 3Cr2W8V tool  steel will get MAX 235 HB (Brinell hardness).

Hardening

3Cr2W8V steels should be heated uniformly to 1050-1100°C (1922-2012°F) until completely heated through. If needed, the steels can be preheated at 300-500°C (572-932°F). About 30 min/per 25 mm of ruling section is to be provided and then the steels should be immediately quenched in air.

Tempering

Tempering of 3Cr2W8V steels is performed at 600-650°C (212-662°F), Soak well at the selected temperature and soak for at least one hour per 25mm of total thickness. Get Rockwell C hardness of 50 MAX..

Application

3Cr2W8V hot work tool steel is particularly useful for hot forging and blanking dies and punches for making nuts, bolts and other similar small components. Dies, cores, inserts, pins, etc for the die casting of copper base alloys are also prime applications for this steel. Other uses include forming dies, shear blades, hot extrusion dies, mandrels, punches, die holders, ejector discs and extrusion liners.

3Cr2W8V products

Product typeProductsDimensionProcessesDeliver Status
Plates/SheetsPlates/Sheets0.08-200mm(T)*W*LForging, hot rolling, and cold rollingAnnealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel BarRound Bar, Flat Bar, Square BarΦ8-1200mm*LForging, hot rolling and cold rolling, CastBlack, Rough Turning, Shot Blasting,
Coil/StripSteel Coil/Steel Strip0.03-16.0x1200mmCold-Rolled&Hot-RolledAnnealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes/TubesSeamless Pipes/Tubes, Welded Pipes/TubesOD:6-219mm x WT:0.5-20.0mmHot extrusion, Cold Drawn, WeldedAnnealed, Solution and Aging, Q+T, ACID-WASHED

Our Services

1. The price is determined according to the material, size, finishing process and different payment methods

2. Each material has been uv tested

3. We have every kind of material in stock, so we can deliver it in time.

4. The size of steel can be customized according to customer requirements, and the minimum order quantity and specification model can be developed / produced according to international, Chinese or industrial standards

5. There are more services. Welcome to consult.