High-end quality for Martensite stainless steel

Direction of the industry

Hob broach end milling cutter bit and other metal machine tool processing industry

Kitchen knife 

Outdoor knife 

Barber Scissors

Hair Scissors

Products been used for SUS440C and VG-10 ,BG-42 제품소개

High temperature bearing M2/9Cr18Mo

고온용 베어링

Automobile engine valve

엔진 벨브

Engine valve port 9Cr18Mo

ZD=ZEICIN PK TAKEFU QUALITY

Professional production of the following martensite stainless steel for high-end quality material of outdoor knife. Kitchen knife, hair scissors etc.
International GradeChina GradeC
Carbon
Cr
Chromium
Mn
Manganese
Si
Silicon
Mo
Molybdenum
V
Vanadium
Co
Cobalt
S
Sulphur
P
Phosphorus
Ni
Nickel
SUS440A7Cr17MoV0.65~0.7016.40~17.100.40~0.80≤1.000.50~0.600.10~0.30≤0.01≤0.02≤0.40
SUS440B8Cr14MoV0.75~0.8013.50~14.500.20~0.80≤0.800.40~0.500.10~0.30≤0.04≤0.03≤0.60
9Cr14MoV0.88~0.9213.50~14.500.20~0.80≤0.800.40~0.500.10~0.30≤0.04≤0.03≤0.60
9Cr14MoV+Co0.88~0.9213.50~14.500.20~0.80≤0.800.40~0.500.10~0.300.20~0.30≤0.04≤0.03≤0.60
SUS440C9Cr18MoV
(SUS440C)
Kitchen knife
0.85~0.9517.00~19.000.20~0.80≤0.801.00~1.300.07~0.12≤0.04≤0.03<0.40
SUS440C9Cr18Mo
(SUS440C)
Hair scissor
0.95~1.1016.00~18.000.30~0.70≤0.800.40~0.70≤0.03≤0.04<0.40
SUS440C or 440F11Cr17
(linear guideway)
0.95~1.216.00~18.00<1.00≤1.00<0.75≤0.025≤0.025<0.60
85Cr18Mo2V0.80~0.9016.50~18.500.90~1.40≤0.802.00~2.500.30~0.60≤0.03≤0.04<0.40
VG10VG100.95~1.0514.50~15.50.30~0.50≤0.800.80~1.200.25~0.351.30~1.80≤0.025≤0.025<0.50
BG-42BG-421.13~1.2014.5~15.50.20~0.600.2~0.43.95~4.11.10~1.20≤0.010
S35VNS35VN1.32~1.4213.70~14.300.40~0.600.40~0.601.95~2.052.90~3.10≤0.025≤0.025≤0.25
Metallographic organization comparision

Photo 1 Domestic Industry

Photo 2 Imported From Abroad

Photo 3 Zeicin 

Image description: 9Cr18Mo X100 times carbide analysis.

Photo1(Domestic). carbon carbide size Obvious appear big size.

Photo2 (abroad) the carbide distribution is uneven and the individual is large.Reason analysis: during the smelting process, the carbide can not be controlled well. In the late forging, although the forging ratio increases, it fails to make up for the defects of the smelting.

Photo3(ZhengDa=Zeicin) the modification of three technological processes of 1)EAF+LF+VD, 2) Special innovation smelting process of RS ESR, 3) transformation forging of the 9Cr18Mo , So that keep obviously better than the imported ones.The carbide is small and uniform.

Photo 1 Domestic Industry

Photo 2 Imported From Abroad

Photo 3 Zeicin 

Image description: 9Cr18Mo X500 times carbide analysis

Photo1(domestic), the carbide individual is obviously large, the processing will appear the phenomenon of detachment.

Photo2(abroad),The carbides are superior to domestic ones, but there are more angular carbide, and cracks and stress concentrations are easy to occur in use, leading to early failure.

Photo3(ZhengDa=Zeicin) the modification of 9Cr18Mo in the process of smelting and forging, the level of carbide is obviously superior to the imports.

Photo 1 Domestic Industry

Photo 2 Imported From Abroad

Photo 3 Zeicin 

Image description: 9Cr18Mo X100 times cross section carbide analysis.

Photo1(domestic), Zonal carbides are obvious, the carbide particles are obviously larger than the longitudinal ones, cause analysis: no make modified forging, Just make rolling directly.

Photo2(abroad) the distribution of carbides is not uniform and the individual is large. Reason analysis: during the smelting process, the carbide can not be controlled well. In the late forging, although the forging ratio increases, it fails to make up for the defects of the smelting.

Photo3(ZhengDa=Zeicin) the modification of three technological processes of 1) EAF +LF+VD, 2) Special innovation smelting process of RS ESR, 3) transformation forging of the 9Cr18Mo , So that keep obviously better than the imported ones.The carbide is small and uniform.

SUS440C 조직 분석 Microstructure comparision

Korea SUS440C dia20mm 100times

carbide size:62μm

carbide distribution:3 한국

Korea SUS440C dia20mm 500times

carbide size:62μm

carbide distribution:3 한국

Japan SUS440C dia20mm 100times

carbide size:32μm

carbide distribution:1.5 일본

Japan SUS440C dia20mm 500times

carbide size:32μm

carbide distribution:1.5 일본

Zeicin SUS440C dia20mm 100times

carbide size:12μm

carbide distribution:2 정다몰드

Zeicin SUS440C dia20mm 500times

carbide size:12μm

carbide distribution:2 정다몰드

VG-10 조직 분석 Microstructure comparision

Japan VG-10 dia22mm 100times

carbide size:16μm

carbide distribution:1 일본

Japan VG-10 dia22mm 500times

carbide size:16μm

carbide distribution:1 일본

Zeicin VG-10 dia22mm 100times

carbide size:13μm

carbide distribution:1.5 정다몰드

Zeicin VG-10 dia22mm 500times

carbide size:13μm

carbide distribution:1.5 정다몰드

Takefu 440C

dia3.3X105XLmm 100times

carbide size:17μm

carbide distribution:1.5

Takefu 440C

dia3.3X105XLmm 500times

carbide size:17μm

carbide distribution:1.5

Zhengda=Zeicin VG-10

dia3.3X160XLmm 100times

arbide size:13μm

carbide distribution:1.5

Zhengda=Zeicin VG-10

dia3.3X105XLmm 500times

carbide size:13μm

carbide distribution:1.5

Gloria 440C

dia30mm 100times

carbide size:32μm

carbide distribution:2 .5

Gloria 440C

dia30mm 500times

carbide size:32μm

carbide distribution:2 .5

Zhengda=Zeicin 440C

dia32mm 100times

carbide size:14μm

carbide distribution:2

Zhengda=Zeicin 440C

dia32mm 500times

carbide size:14μm

carbide distribution:2

Martensite stainless steel: 마르텐사이트 스테인레스

For example: one of our representative clients

 

http://www.zysbearing.com/

This company is a military enterprise, specializing in the manufacture bear for rockets, satellites etc.. Below test report is from this customer to provice.

This is high temperature bearing used in industry of medical, airplane, high speed rail Which represents a symbol of high-end HSS, In China only our Zhengda=Zeicin company’s quality to achieve customer confirmation to replace imported materials from Japan and Europe, It is also means our quality has been recognized by high-end customers and affirmation

M2

dia35mm 100times microstructure

carbide grain size:8 μm

carbide distribution:2

Customer Feedback

This company produces for Satellite bearing, which are very influential in China.

This is one of our Korea custoers who purchase Japan before, but now he would like to purchase from us for the SUS440C and VG10.