9Cr18MoV stainless steel bar
As the development of stainless steel materials, 9Cr18MoV stainless steel bar occupied a high popularity in many fields due to its excellent mechanical properties and corrosion resistance.
9Cr18MoV stainless steel bar is a kind of martensitic steel. Metals with this kind of structure have strong strength, strong wear resistance andh good resistance to atmospheric, water and other weak corrosive mediums. Meanwhile, 9Cr18MoV stainless steel bar has good comprehensive performance and is often used to manufacture high-end watch case, cutting tools, surgical tools and other products that need high wear resistance, corrosion resistance, non-magnetic and stable dimension. In addition, the work hardening ability of 9Cr18MoV stainless steel bar is excellent, which can meet the need of making complex structures.
Application
1. For food processing industry - 9Cr18MoV stainless steel bar can be used to make food grade knife and cutting knife.
2. For watchmaking industry - 9Cr18MoV stainless steel bar can used to make premium watchcase.
3. For medical industry - 9Cr18MoV stainless steel bar can used to make dental drill, high-end surgical tools and surgical scissors.
4. For kitchenware industry - 9Cr18MoV stainless steel bar can used to make kitchen knives and cooking tools.
5. For air supply system and water system - 9Cr18MoV stainless steel bar can used to make heat exchangers and valves.
Specifications of 9Cr18MoV stainless steel bar
Chemical Composition
Element% C Si Mn S P Cr Ni Mo V 0.9-1.1 0.75 1.00 0.035 0.035 17.00-19.00 0.6-1.2 0.50-0.70 0.20-0.3
Physical Properties
Tensile Strength : 800-950 Mpa
Yield Strength : 600-800 Mpa
Elongation : 7-15%
Hardness : Max HRC50
These are just some of the general specifications of 9Cr18MoV stainless steel bar. Many other specifications of stainless steel bar can also be provided. Normally the length of 9Cr18MoV stainless steel bar suggested is less than 6 meters or can cut as request.
Manufacture process
The manufacture process of 9Cr18MoV stainless steel bar can be divided into 3 parts: heating, hot rolling and heat treatment.
Firstly, the 9Cr18MoV stainless steel alloy ingot should be heated to 1000-1150℃ to get homogenization.
Then, hot rolling process is processing 9Cr18MoV stainless steel into required shape, such as bar, strip, wire, ring, etc.
Finally, the process of annealing, normalizing, both quenching and tempering and double ageing means of heat treatment will be applied to 9Cr18MoV stainless steel bar. During heat treatment, different preforms of 9Cr18MoV stainless steel will obtained. The changes of hardness, strength and dateleness will be obtained accordingly. Accordingly, through heat treatment process, 9Cr18MoV stainless steel bar can have different mechanical properties according to different applications.
Finally, quality testing is carried out to guarantee the quality of 9Cr18MoV stainless steel before delivery: including microstructure analysis, tensile test, mechanical property testing, magnetic particle testing, chemical composition analysis, ultrasonic testing, surface testing and other tests.
packaging and transport
The 9Cr18MoV stainless steel bars are generally packed by packing straps and proper angles, preventing it from wrimple and crash during the transport. Water-proof paper or kraft paper is used as the outer packing. For LCL shipment, plastic film seaworthy packing is necessary; while for FCL shipment, 7-plys cardboard is necessary.
Implementation of standards
ASTM A276, ASTM A493, GB/T 4226, GB/T 20878, etc.
Advantages of 9Cr18MoV stainless steel bar
1. Strong strength and good wear resistance.
2. Good relatively resistant to atmospheric, water and other weak corrosive media.
3. High work hardening ability.
4. Good dimensional stability.
5. Low cost
Conclusion
9Cr18MoV stainless steel bar is a kind of martensitic stainless steel material with strong strength, good wear resistance and corrosion resistance. It can be used in wide range of applications including food processing industry, watchmaking industry, medical industry, kitchenware industry and air supply system and water system. The manufacture process of 9Cr18MoV stainless steel bar consists of heating, hot rolling, heat treatment, assembly and quality control. 9Cr18MoV stainless steel bar can be packed by strapping and packing angles or plastic film seaworthy packing for LCL shipment. All the requirements of ASTM A276, ASTM A493 and other standards shall be followed in the production. 9Cr18MoV stainless steel bar has strong strength, good wear resistance, good corrosion resistance, and high work hardening ability, which make it have become the dedicated material for many applications.
