Sichuan Liaofu Special Steel Company is one of the most experienced manufacturers and suppliers of 21crmov5-11 1.8070 steel flat round bar in China. With over 20 years' experience, our factory offer high quality products made in China with competitive price. Welcome to contact us for wholesale service.
21CrMoV5-11 1.8070 Steel Flat Round Bar
21CrMoV5-11 is a chromium-molybdenum-vanadium alloy steel with the DIN standard designation 1.8070, formerly known as Atrix 231. It is a upgraded version of 21CrMoV5-7, featuring a higher molybdenum content (1.0-1.2%) that enhances its heat resistance and creep performance significantly. Our flat round bars are manufactured through advanced forging, hot rolling, and precision processing technologies, ensuring uniform structure, stable performance, and strict dimensional accuracy to meet the diverse needs of overseas customers.
Our supply size:
Round Bar Diameter: 80 - 600 mm
Length: 1000 - 9000 mm
Flat Bar Thickness/Width: Customizable according to customer drawings
Chemical Composition of 21CrMoV5-11 1.8070 Steel
|
Silicon (Si) |
0.30 |
0.60 |
|
Manganese (Mn) |
0.30 |
0.50 |
|
Chromium (Cr) |
1.20 |
1.50 |
|
Molybdenum (Mo) |
1.00 |
1.20 |
|
Vanadium (V) |
0.25 |
0.35 |
|
Phosphorus (P) |
- |
0.035 |
|
Sulfur (S) |
- |
0.035 |
|
Nickel (Ni) |
- |
0.60 |
Thermodynamic Parameters of 21CrMoV5-11 1.8070 Steel Flat Round Bar
As a heat-resistant steel, 21CrMoV5-11 1.8070 has excellent thermodynamic stability, which can maintain good performance under different temperature conditions. The following thermodynamic parameters are tested according to international standards, providing important reference for the selection and application of the product in high-temperature environments.
|
Thermodynamic Parameter |
Value |
|---|---|
|
Density (ρ) |
7.89 kg/dm³ |
|
Modulus of Elasticity (E) |
200-210 GPa |
|
Mean Coefficient of Thermal Expansion (α) |
11×10⁻⁶/℃ (20-100℃) |
|
Thermal Conductivity (λ) |
33.2 W/(m·℃) (100℃) |
|
Specific Thermal Capacity (c) |
432 J/(kg·℃) (100℃) |
|
Specific Electrical Resistivity (ρₑ) |
131 ω·mm²/m (100℃) |
|
Poisson's Coefficient (ν) |
0.24 |
|
Continuous Working Temperature |
Up to 530℃ |
|
Heat Treatment Temperature Range |
Annealing: 650-700℃; Normalizing: 930-950℃ |
Applications
The main applications of these grades of steel are rotors of steam turbines, rotor blades, shaft forgings, reservoirs and 21CrMoV5-11 barrel, covers for up to 550 ℃ temperatures, nuts, tubes for high temperatures up to 540 ℃.
Processing & Delivery Conditions
Hot Forging: Initial forging temperature 1100°C, final forging temperature 850°C, forging ratio ≥ 4:1
Heat Treatment: Normalized, annealed, or quenched & tempered (QT) as required; stress relief treatment available
Surface Condition: Ground, turned, polished, or shot-blasted (customizable based on application needs)
Delivery Standard: DIN EN 10269, ASTM, AISI, BS, JIS (compliant with international quality standards)
We also supply :
4130 , 4130 p+x , 4140 , 4330v mod , 4340 , 4145h mod , 4317
1.8509 , 1.6523 , 1.7707 , 1.6657 , 1.6587 , 1.6582 , 1.6773
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