T: +86-0731-85185770
E: enquiry@qilumetal.com
E: enquiry@qilumetal.com
No. 18 Xiangfu Middle Road,Yuhua District, Changsha City
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Grade: 35CrNi3MoV Forging
35CrNi3MoV steel is a low-alloy forging steel containing chromium (0.50%–1.20%), nickel (2.50%–3.30%), molybdenum (0.40%–0.70%), and vanadium (0.10%–0.25%), with carbon controlled at 0.30%–0.40% and residuals P≤0.012%, S≤0.005% for high purity and fine grain structure (ASTM No.8+), ensuring excellent hardenability and low-temperature toughness.
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35CrNi3MoV
Qilu
35CrNi3MoV steel is a nickel-chromium-molybdenum-vanadium alloy structural steel. Featuring balanced high strength, excellent hardenability, great low-temperature impact toughness and stable fatigue resistance, this grade is widely manufactured into open-die forgings for heavy-duty working conditions under combined impact, pressure and alternating load.
Our 35CrNi3MoV forgings are produced by EAF+LF+VD refining process. Strict forging ratio control and professional QT heat treatment guarantee uniform microstructure and consistent mechanical properties. Products comply with NB/T 47008-2017, customized dimensions and inspection standards are acceptable.
Country | China |
Standard | NB/T 47008 |
Grade | 35CrNi3MoV |
Grade | C | Si | Mn | P | S | Cr | Mo | Ni | Cu | V |
35CrNi3MoV | 0.30-0.40 | 0.10-0.35 | 0.20-0.80 | 0.012 Max | 0.005 Max | 0.50-1.20 | 0.40-0.70 | 2.50-3.30 | 0.20 Max | 0.10-0.25 |
Normalizing + Quenching + Tempering (Tempering temperature ≥ 540°C)
| Dimension (Thickness) | Test Temp | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Impact Energy (J) |
| t ≤ 300 mm | -20℃ | 1070 – 1230 | ≥ 960 | ≥ 16 | ≥ 47 |
| 20℃ | ≥ 960 | — | — | — | |
| 100℃ | ≥ 876 | — | — | — | |
| 150℃ | ≥ 857 | — | — | — | |
| 200℃ | ≥ 843 | — | — | — | |
| 250℃ | ≥ 799 | — | — | — | |
| 300℃ | ≥ 777 | — | — | — | |
| 350℃ | ≥ 758 | — | — | — | |
| 400℃ | ≥ 720 | — | — | — |
Additional Notes:
Lateral Expansion (LE): ≥ 0.53 mm
Alternative Impact Test: -40°C may be used upon agreement
Density: ~7.85 g/cm³
Critical Temperatures: Ac1 ~720°C, Ac3 ~790°C
Forging Temperature Range: 1180 ~ 850°C; stop forging above 850°C
Quenching: 860–890°C holding, oil cooling
Tempering: 540–620°C holding, air cooling / oil cooling
Delivery state: Annealed, Normalized, Quenched & Tempered (QT) as customer requirement
We supply all kinds of 35CrNi3MoV open die forgings:
Forged round blocks, hollow shafts, shaft forgings
Disc forgings, ring forgings, cylinder forgings, special-shaped forgings
Dimension: Max single forging weight up to 25 tons
Surface: Black forging surface, rough turned, finish machined
Supported service: Rough machining, finish CNC machining, stress relief annealing
Rotor shafts, turbine components, structural parts for thermal and nuclear power plants
Cylinders, heads, covers, and flanges for petrochemical processing, synthetic diamond manufacturing, and geophysical research equipment
Load-bearing and transmission components for metallurgical, mining, and transportation equipment
Gun barrels, breech mechanisms, and high-strength structural components requiring high dynamic toughness
A1: With the addition of vanadium element, 35CrNi3MoV realizes grain refinement. It delivers better low-temperature impact toughness, higher fatigue resistance and weaker temper brittleness. Under the same section size, its hardenability is superior, suitable for thick-section heavy forgings with strict toughness requirements.
A2: We provide multiple delivery states as required: normalized, annealed, quenched and tempered (QT). Quenched & tempered treatment is the most common solution to achieve balanced strength and toughness. Stress relief annealing service is also available after rough machining.
A3: Our forgings follow NB/T 47008 standard. Available tests include spectroscopic chemical analysis, tensile test, low-temperature impact test, hardness inspection, metallographic analysis. Non-destructive testing such as UT, MT and PT can be implemented according to customer technical requirements. Full MTR test reports will be provided.
A4: We customize various forged blanks: shaft forgings, hollow cylinder forgings, ring forgings, disc forgings, rectangular blocks and special-shaped forgings. Single forging weight can reach up to 25 tons. Rough turning and finished CNC machining services are supported.
For detailed specifications, quotation requests, or to discuss your specific application requirements, please contact us.
