718 die steel has the same use as P20 type die steel, but because of its better hardenability and superior performance, it can make large and high-grade plastic die forming parts. With the development of plastic moulds, there will be more and better updating of improved mould steel numbers. The B30H of Baosteel in China is an example.
Thermoplastic injection mold, extrusion mold.
Die steel
Die steel
Thermoplastic blow moulds.
Main parts of heavy-duty die.
Cold structural parts.
It is often used to make TV case, washing machine, refrigerator case, bucket and so on.
Chemical Composition
element
C
Si
Mn
Mo
Cr
Ni
standard
Content (%)
0.28~0.40
0.20~0.80
0.60~1.00
0.30~0.55
1.40~2.00
0.80~1.20
YB/T127-1997
Material Performance
physical property
(hardness 340HBW, at room temperature and high temperature)
1) Temperature 20 C/200 C/400 C, density 7.8g/cm/7.75g/cm/7.7g/cm.
2) Temperature 20-200 C/20-400 C, linear expansion coefficient: 12.6 10K/13.5 10K.
3) Temperature 20 C/200 C/400 C, thermal conductivity 29.0W (m K) / 29.5W (m K) / 31.0W (m K)
4) Temperature 20 C/200 C/400 C, modulus of elasticity: 205 000 MPa/200 000 MPa/185 000 MPa
mechanical property
(hardness 340HBW)
1) Temperature 20 C/200 C/400 C, tensile strength 1100 MPa/1050 MP8/850 MPa.
2) Temperature 20 C/200 C/400 C, conditional yield strength 980 MPa/925 MPa/770 MPa.
3) Temperature 20 C/200 C/400 C, section shrinkage 49%/51%/52%.
4) Temperature 20 degree C/200 degree C/400 degree C, elongation 13%/14%/16%.
5) Temperature 20 C/200 C/400 C, impact toughness (>) 20J/cm/32J/cm/42J/cm
critical temperature
critical point
Ac1
Ac3
Ar1
Ar3
Ms
Mf
Temperature (approximation) / Temperature
Seven hundred and seventy
Eight hundred and twenty-five
Six hundred and forty
Seven hundred and fifty-five
Three hundred and thirty-five
One hundred and eighty
Coefficient of expansion
Temperature / C
18~100
18~200
18~300
18~400
18~500
18~600
18~700
Linear (Expansion) Expansion Coefficient/C
11.9 x 10
12.20 x 10
12.50 x 10
12.81 x 10
13.11 x 10
13.41 x 10
13.71 x 10
Company information:
Bozhong Group Mainly supply in forms of coil, sheet, plate, rod, bar, tube, pipe, beam, angle, flange, wire, strip, channel, etc., with various varieties, wide range of dimensions, high purity, stable chemical composition, high dimensional accuracy and excellent surface quality. The products are mainly used in the fields of industries such as automobile engineering, railway transportation, aviation, aerospace, machinery, petrochemical, energy, environmental protection, offshore, chemical, oil & gas, military, power plant, nuclear power, pressure vessel, boiler equipment, mold manufacture, etc.
steel coil
steel plate
steel sheet
steel bar/rod
steel round bar
steel flat bar
steel square bar
steel pipe/tube ( welded or seamless )
steel round pipes
steel square pipes
steel welded tubes
steel seamless tubes
steel strip
steel beam
steel angle
steel channel
steel flange
Steel wire
Bozhong Group can supply a variety of structural steel, high-strength steel, wear-resistant steel plate, boiler and pressure vessel steel, marine engineering and stainless steel plate in the thick steel and various European standard bars and pipes and profiles.Our global sales and service network throughout all around the world to ensure that the goods reach the customer in the shortest time.
We can follow your drawings and requirements, to provide you with oxygen cutting, plasma cutting and laser cutting and other processing services. You can also perform ultrasonic testing in accordance with EN10160 standard, EN10164 standard test Z15, Z25, Z35, weld bending detection, PWHT detection,etc.
We have ISO9001: 2000 quality management system certification, and obtain the quality certification from all the well-known certification company, including TuV / LRS / GL / CE and so on.
Special steel includes as below:
Boiler and pressure vessel steel
Pipeline steel
Bridge steel
Nuclear power steel
Structural steel
Die steel
High strength steel
Abrasion resistant steel
Weathering, corrosion resistant and fire resistant steel
High rise building steel
Shipbuilding and offshore engineering steel
FAQ:
Q: Are you a manufacturer or merely a trader?
A: We are group of companies and owned manufacturer bases and trading company. We specialized in special steel which include alloy structural steel and carbon steel and stainless steel, etc. All material are with high quality and competitive price.
Q: How do you guarantee the quality of your product?
A: Firstly, we can provide the certificates from the third party, such as TUV, CE, if you need. Secondly, we have a complete set of inspection system and every process is checked by QC. Quality is the lifeline of enterprise survival.
Q: Delivery time?
A: We have ready stock for most of material grades in our warehouse. If the material don't have stock, the delivery lead time is about 5-30 days after receiving your prepayment or firm order.
Q: What is the payment term?
A: T/T or L/C.
Q: Can you provide a sample for our testing before confirm the order?
A: Yes. We can provide sample to you for approval before you place an order to us. Free sample is available if we have stock.
Q: Can we visit your company and factory?
A: Yes, warmly welcome! We can book the hotel for you before you come to China and arrange our driver to our airport to pick you up when you come.
Customer visiting :
Warmly welcome! Pick up your phone and Call us!
Send us the inquiry here!
We will reply you at the first time.
Contact US:
Annie Wang
Direct Line:+86 - 21 - 5762 9195
Audited Supplier 
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