- EN40B EN40 Alloy Steel round bar
- EN40B EN40 Alloy Steel forging
- EN40B EN40 Alloy Steel sheet
- EN40B EN40 Alloy Steel flat bar
- EN40B EN40 Alloy Steel pipe
EN40B EN40 Alloy 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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EN40B EN40 Alloy Steel
EN40B is a chromium-molybdenum nitriding steel usually supplied in the hardened and tempered condition, which offers high wear resistance together with good toughness and ductility. It is characterised by its suitability for nitriding, which can give a hard wear resistant core in the range of 61-65Rc. The relatively low temperature of the nitriding process produces components with a scale free surface, and minimum distortion. |
TYPICAL ANALYSIS |
|
|
||
C. |
Si. |
Mn. |
Cr. |
Mo. |
0.25% |
0.30% |
0.60% |
3.25% |
0.55% |
Hardening:
Heat uniformly to 880/910°C, soak until heated through. Quench in oil.
Tempering:
Heat uniformly and thoroughly at the selected tempering temperature, between 570°C to 700°C.
Heat |
Tensile |
Yield |
a% on |
Impact |
Impact |
Hardness |
Size |
T |
850/1000 |
650 |
13 |
40 |
35 |
248/302 |
>150≤250
|
T |
850/1000 |
680 |
13 |
54 |
50 |
248/302 |
>6≤150
|
U |
925/1075 |
755 |
12 |
47 |
42 |
269/331 |
>6≤150
|
Mechanical properties
Heat treatment
Machining
Welding performance
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