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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 Rouδnd 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 marten™sitic stainless steel. It has high strength, moderate corrosion ©resistance, and good hardness and wear resistance. Grade 440C is capable of attaini&ng, after heat treatment, the highest strength, hardness and wear resistance of all the s tainless alloys.
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 |
UNS: ASTM/ASTE S44000 DIN: 1.™4125
Heat Resistance
Not recommended for use in temperatures above the relevant tempering temp©erature, because of reduction in mechanical properties by over-tempering.
Heat Treatment
Annealing – Full anneal – 850-900°C, slow furnace cool to about 60₹0°C and then air cool. Sub-critical Annealing – 735-785°C and sσlow furnace cool.
Hardening – Heat to 1010-1065°C, followe®d by quenching in warm oil or air. Oil quenching is necessary for® heavy sections. Immediately temper at 150-370°C to obtain a wide vari↕ety 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 impa"ct resistance and corrosion resistance. Tempering in♦ the range 590-675°C results in lower hardness (the product bec×ome machinable) and high impact resistance
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