- 440C Stainless Steel round bar
- 440C Stainless Steel forging
- 440C Stainless Steel sheet
- 440C Stainless Steel flat bar
- 440C Stainless Steel pipe
440C Stainless Steel
Production specification
Square-shape steel: 1mm to 4000mm
Plate steel:0.1mm to 4000mm
Width: 10mm to 2500mm
Lenth: We can supply any lenth based on the customer's requirement.
Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes
Tubings: OD: φ6-1800mm, with wall thickness ranging from 1-35 mm.
Finished goods condition: hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement
Surface conditions: scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement
Furnaces for metallurgical processing: electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.
Ultrasonic inspection: 100% ultrasonic inspection for any inperfections or based on the customer's requirementExcellent service for all kinds of industries,with advantages of technologies, equipment and price.
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440C 1.4125 Stainless Steel
440C is a high carbon chromium stainless steel providing stainless steel properties with optimum hardness after heat treatment. 440C can achieve a hardness of up to 60 Rockwell HRc. 440C stainless resists corrosion in normal domestic environments and very mild industrial enviroments, with optimum cossision resistance of 440C achieved with a temper below about 400°C. For 440C to achieve best cossosion resistance, surfaces must be free of scale, lubricants, foreign particles, and coatings applied for drawing and heading. With its high carbon content 440C annealed stainless machines similar to a high speed steel annealed grade |
Typical Analysis |
|
|
|
|
|
|
C. |
Mn. |
P. |
S. |
Si. |
Cr. |
Mo. |
0.95- |
1.00% |
0.04% |
0.03% |
1.00% |
16.00- |
0.75% |
1.20% |
max. |
max. |
min. |
max. |
18.00% |
max. |
Annealing
To achieve full anealing of 440B heat uniformly to 840 to 875°C. Soak and cool very slowly in the furnace.
Hardening
To heat treat 440B heat to 1010 to 1070°C, fully soak and quench in warm oil or cool in air. Be carefull not to overheat 440C or full hardness will not be obtained.
Tempering
When tempering 440C a Rockwell hardness of 60HRc can be obtained. Temper for at least one hour.
Tempering °C |
300 |
400 |
500 |
600 |
700 |
HRc |
60 |
59 |
57 |
56 |
56 |
Mechanical Properties at Room Temperature
(440C hardened at 1040°C, oil quenched and tempered at 300°C)
Tensile (UTS) |
|
1965 N/mm² |
0.2% Yield Strength |
|
1896 N/mm² |
Elongation (50.8mm) |
|
2% min |
Hardness |
|
59HRc |
Reduction of Area |
|
10 |
Cr Alloy Martensitic Stainless Steel Specifications 440C UNS S44004 AISI 440C ASTM A276 1.4125 |
Mechanical properties
Heat treatment
Machining
Welding performance
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