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440C Stainless Steel Round Bar
440C S44004 1.4125 Stainless Steel Round Bar
Haosteel is professional manufacturer and supplier of 440C Stainless Steel Round Bar . Quality guaranteed, On-time delivery, After-sales warranty.
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Standard: |
ASTM A276/A484/A582 |
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Grade: |
440C S44004 1.4125 |
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Delivery: |
Hot rolled, Cold drawn |
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Surface: |
Pickled,Black,Bright,Polishing,Grinded |
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Diameter: |
1mm-300mm |
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Length: |
2m-12m as customer request |
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round bar: |
Hot rolled black bar/Acid round bar Cold drawn bright bar/Polishing round bar |
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Mill: |
Tisco, Jisco, Baosteel, etc. |
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Delivery time: |
15 days in common |
Description:
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.
Chemical composition:
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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 |
UNS: ASTM/ASTE S44000 DIN: 1.4125
Heat Resistance
Not recommended for use in temperatures above the relevant tempering temperature, because of reduction in mechanical properties by over-tempering.
Heat Treatment
Annealing – Full anneal – 850-900°C, slow furnace cool to about 600°C and then air cool. Sub-critical Annealing – 735-785°C and slow furnace cool.
Hardening – Heat to 1010-1065°C, followed by quenching in warm oil or air. Oil quenching is necessary for heavy sections. Immediately temper at 150-370°C to obtain a wide variety of hardness values and mechanical properties as indicated in the accompanying table.
Tempering in the range 425-565°C is to be avoided because of reduced impact resistance and corrosion resistance. Tempering in the range 590-675°C results in lower hardness (the product become machinable) and high impact resistance
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