4Cr5MoSiV is air quenching hardening hot work mold steel. It is equal to H11 steel in the United States. Its performance and service life are higher than 3Cr2W8V steel.
4Cr5MoSiV Worldwide Equivalents
country / region
China
EU
Germany
Japan
France
England
Standard
GB
EN
DIN,WNr
JIS
AFNOR
BS
Grade
4Cr5MoSiv
X37CrMoV5-1 (1.2343)
X38CrMoV5-1
SKD6
X38CrMoV5-1
BH11
country / region
Poland
Czechia
Austria
Russia
Inter
USA
Standard
PN
CSN
ONORM
GOST
ISO
–
Grade
WCL
19552/19553
W300
4KH5MFS
X37CrMoV5-1
H11
4Cr5MoSiV Chemical Composition
C ：0.33～0.43
Si：0.80～1.20
Mn：0.20～0.50
S ：≤0.030
P ：≤0.030
Cr：4.75～5.50
Ni： Allowable residual content ≤0.25
Cu： Allowable residual content ≤0.30
V：0.30～0.60
Mo：1.10～1.60
4Cr5MoSiV Physical Properties
Density
7.69t/m
Hardness: Annealing
≤235HB
Mass heat capacity at constant pressure CP
459.8J/（kg·K）
Indentation diameter
≥3.95mm
Critical temperature
Critical point
Ac1
Ac3
Ar1
Ar3
Ms
Mf
Temperature/℃
853
912
720
773
310
103
Linear expansion coefficient
temperature/℃
20～100
20～200
20～300
20～400
20～500
20～600
20～700
Linear expansion coefficient/℃
10.0×10
10.9×10
11.4×10
12.2×10
12.8×10
13.3×10
13.6×10
Thermal conductivity
temperature/℃
100
200
300
400
500
600
700
Thermal conductivity /W·(m·K)
25.9
27.6
28.4
28.0
27.6
26.7
25.9
Elastic modulus
Temperature/℃
20
100
200
300
400
500
Elastic modulus E/MPa
227000
221000
216000
208000
200000
192000
Heat treatment
Quenching, preheating at 790 ± 15 ℃, heating at 1000 ± 6 ℃ or 1010 ± 6 ℃, holding for 5 ~ 15min, air cooling and tempering at 550 ± 6 ℃.
Application
It is suitable for aluminum alloy mold casting. Tools and mandrels for hot extrusion and perforation. Mold forging hammer. Press forging mold, high-speed precision forging molds and plastic pressing molds. It can also be used for aircraft, rockets, Structural parts with temperatures between 400 and 500 °C.
Available Size
Round Bar
Diameter(mm): 6-800mm ,Length: 1000-12000mm or custom size
Plate/Flat/Block
Thickness: 6mm-500mm , Width: 20mm-1000mm or custom size
