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440C hot rolled stainless steel plate
440C hot rolled stainless steel plate
Haosteel is professional manufacturer and supplier of 440C hot rolled stainless steel plate. Quality guaranteed, On-time delivery, After-sales warranty.
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Standard: |
ASTM A240 A666 |
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Grade: |
440C |
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Delivery: |
Cold rolled Hot rolled |
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Surface: |
Black/Bright/2B/BA/ NO.1/Hairline/Mirror |
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Thickness: |
2.5 - 100mm |
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Width: |
1m-3m |
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Length: |
2m-12m |
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Mill: |
Tisco, Jisco, Baosteel, etc. |
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Delivery time: |
15days in common |
Description:
Stainless steels are high-alloy steels which have high corrosion resistance compared to other steels due to the presence of large amounts of chromium. Based on their crystalline structure, they are divided into three types such as ferritic, austenitic, and martensitic steels. Another group of stainless steels are precipitation-hardened steels. They are a combination of martensitic and austenitic steels.
Grade 440C stainless steel is a high carbon martensitic stainless steel. It has high strength, moderate corrosion resistance, and good hardness and wear resistance. Grade 440C is capable of attaining, after heat treatment, the highest strength, hardness and wear resistance of all the stainless alloys. Its very high carbon content is responsible for these characteristics, which make 440C particularly suited to such applications as ball bearings and valve parts.
Chemical composition:
|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
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0.95-1.2 |
≤ 1.00 |
≤ 1.00 |
≤ 0.04 |
≤ 0.03 |
16.0- 18.0 |
≤ 0.75 |
Physical Properties:
Ultimate Tensile Strength – 758 MPA min
Yield Strength (0.2% Offset) –448 MPA min
Elongation – 14% min
Hardness – 285HB max
Applications:
Rolling element bearings, Valve seats, High quality knife blades, Surgical instruments, Chisels.
Machining:
In the annealed condition this grade is relatively easily machined; approximately the same as for high speed steel. Chips are tough and stringy so chip breakers are important. If these grades are hardened machining becomes more difficult and probably impossible.
Why it might be chosen instead of 440C?
440A/B: Slightly softer and more corrosion resistant grade needed
440F: High machinability required, with same hardness and hardenability as 440C
420: Lower strength and hardness needed than any of the 440 grades
416: Higher machinability required, and the much lower hardness and strength is still adequate
Product display:
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