Hot Rolled 25Cr2MoVA Alloy Steel Round Bar 50*6000mm For Turbine Bolts and Nuts At High Temperature
25cr2mova is a medium-carbon steel. Has high strength and toughness. When the temperature is lower than 500℃, the high temperature performance is good, there is no tendency of hot brittleness, the hardenability is good, the machinability is fair, the cold deformation plasticity is medium, and the weldability is poor.
Generally, it can be used in quenched and tempered state, and can also be used after normalizing and high temperature tempering. . Low temperature to -110 degrees Celsius, and has high static strength, impact toughness and high fatigue strength, good hardenability, no overheating tendency, small quenching deformation, good plasticity during cold deformation, medium machinability, but there is The first type is temper brittleness and poor weldability. It needs to be preheated to 150~400 degrees Celsius before welding, and post-weld heat treatment to eliminate stress. It is generally used after quenching and tempering.
MATERIAL DATA SHEET - GB 25Cr2MoVA
MATERIAL CATEGORY - Steels for Turbine bolts and nuts at high tmperature
PRODUCT DESCRIPTION
The
alloy is usually produced by EAF + VD + LF followed by electroslag refining (ESR) if necessary for special purpose. Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different level according to the buyers' requirements.
Bars are usually supplied bright in the annealed condition, or bright annealing specially.
Final heat treatment - Quenched and tempered.
Bars are usually supplied bright in the annealed condition, or bright annealing specially.
Final heat treatment - Quenched and tempered.
Working Temperature: 510 ℃ Max.
Stock Available: Round bar diam. 20 ~ 300mm
25Cr2MoVA hot rolled steel sheet Chemical Composition
| |
Chemical Composition (%) |
| Steel Grade |
C |
Si |
Mn |
V |
|
Cr |
Mo |
| 25Cr2MoVA |
0.22～0.29 |
0.17～0.37 |
0.40～0.70 |
0.15～0.30 |
|
1.50～1.8 |
0.25～0.35 |
Mechanical properties
| Yield strength σs/MPa (>=) |
Tensile strength σb/MPa (>=) |
Elongation
δ5/% (>=) |
Reduction of
area ψ/% (>=) |
| ≧785 |
≧930 |
≧14 |
≧55 |
【Heat Treatment】
Quenching heating temperature (℃): 900; coolant: oil
Tempering heating temperature (℃): 640; coolant: empty
We can produce the 25Cr2MoVA has the following specifications:
Round bar steel: 1mm to 3000mm
Square-shape steel: 1mm to 2000mm
Plate steel:0.1mm to 2500mm
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: φ6-219 mm, 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.
We serve you with our honesty, integrity, and professionality.
FAQ
1) why you chose us ?
Because we have large stocks and we have long term cooperative factories. We can get the lowest ex-factory prices. The price are quite reasonable and it is lower than our commercial peers. Also, we can guarantee the quality of our products.
2) Our minimum order quantity:
15 Metric Tons
3) How about the Delivery Time?
The steel pipe will be produced since we getting your deposit by T/T or original L/C, and delivery to the port of loading within 25~30 days.
For normal size, some stocks in our factory now, we can shipment within 7~10 days after receive the deposit.
4) What kind of payment does your company support?
T/T, 100% L/C at sight.
5) Do you charge for the samples?
No, we provide samples free, you pay for the freight charge.
6) Main market:
Mid East South America South Asia Africa Southeast Asia Northern Europe Western Europe etc.
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