AISI 440B is a high carbon chromium stainless steel combining stainless steel properties with excellent hardness after heat treatment. 440B can achieve a hardness of up to 58 Rockwell HRc. AISI 440B stainless steel has similar corrosion resistance properties to type 410 stainless, with optimum cossision resistance of 440B achieved with a temper below about 400°C. For AISI 440B steel to achieve best corrosion resistance, surfaces must be free of scale, lubricants, foreign particles, and coatings applied for drawing and heading. Due to its high carbon content 440B annealed stainless machines similar to a high speed steel annealed grade.
440B stainless steel plate
440B stainless steel pipe
AISI 440B grade stainless steel Chemical Composition
|
Grade |
C |
Mn |
Si |
P |
S |
Cr |
Mo |
Ni |
N |
|
|
440A |
min. max. |
0.65 0.75 |
- 1.00 |
- 1.00 |
- 0.040 |
- 0.030 |
16.00 18.00 |
- 0.75 |
- |
- |
|
440B |
min. max. |
0.75 0.95 |
- 1.00 |
- 1.00 |
- 0.040 |
- 0.030 |
16.00 18.00 |
- 0.75 |
- |
- |
440B grade stainless steel Mechanical properties
|
Tempering Temperature (°C) |
Tensile Strength (MPa) |
Yield Strength 0.2% Proof (MPa) |
Elongation (% in 50mm) |
Hardness Rockwell (HR C) |
Impact Charpy V (J) |
|
Annealed* |
758 |
448 |
14 |
269HB max# |
- |
|
204 |
2030 |
1900 |
4 |
59 |
9 |
|
260 |
1960 |
1830 |
4 |
57 |
9 |
|
316 |
1860 |
1740 |
4 |
56 |
9 |
|
371 |
1790 |
1660 |
4 |
56 |
9 |
BEBON STEEL is a professional steel supplier. We have the most comprehensive service. one package service will be offered,including cutting,welding, drilling, shot blast cleaning, derusting, painting, galvanized, etc, our service will be around your requirement and ensure the perfect service.
The production process of AISI 440B grade stainless steel we offered are: Hot rolled, cold rolled, annealing, pickling, cutting edge.
AISI 440B grade stainless steel production process Tempering: In order to reduce the brittleness of AISI 440B grade stainless steel, preserve quenched AISI 440B grade stainless steel heat for long time at a proper temperature between room temperature and 650 ℃, then cool. This process is called tempering.
BEBON STEEL can offer a lot of AISI 440B grade stainless steel, otherwise, including its chemical composition and mechanical propertity. If you are interested in AISI 440B grade stainless steel, please contact BEBON STEEL.
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