31CrMoV9 Round Bar / 1.8519 Alloy Round Rod Nitriding Steel Forged
300mm Diameter
Products Specification
Products Name | 31CrMoV9 Alloy Steel Round Bar |
Diameter | 10 - 500 mm |
Length | 6m or custom cutting any length as request |
Type | Hot Rolled |
Brand | BAOSTEEL DELTA DONGBEI HUAXI SHAGANG.etc |
MOQ | 1 Ton |
Loading Port | Shanghai Port |
Packing | packing by steel wire rope |
Deliver time | 5 - 7 days for stock materials |
Other Grade | Q195,Q235,10#,20#,35#,45#,Q215,Q345,12Cr1Mov,15CrMo,304,3 16,20Cr,40Cr,20CrMo,35CrMo,42CrMo,40CrNiMo,GCr15,65Mn,50Mn, 50Cr,3Cr2W8V,20CrMnTi,5CrMnMo ,38CrMoAl, 31CrMoV9 |
Standard | ASTM GB EN DIN |
Application | Structure and Industrial |
Supply Range of 31CrMoV9 Alloy Steel
31CrMoV9 is available in round bar and plate:
- Round Bar: Diameter range from 16mm to 300mm.
- Steel Plate: Thickness range from 20mm to 200mm.
Relevant 31CrMoV9 Specification and Equivalent Steel Grades
| Steel Grade | Specifications | Equivalent Grades |
|---|
| 31CrMoV9 | EN 10085 | 1.8519, 34CrAlMo5-10, 34CrAlNi7-10 |
31CrMoV9 Material and Equivalent’s Chemical Composition
| Element | 31CrMoV9 (%) | 34CrAlMo5-10 (%) | 34CrAlNi7-10 (%) |
| C | 0.27-0.34 | 0.30-0.37 | 0.30-0.37 |
| Cr | 2.30-2.70 | 1.0-1.30 | 1.50-1.80 |
| Mo | 0.15-0.25 | 0.15-0.25 | 0.15-0.25 |
| V | 0.10-0.20 | – | – |
| Si | max 0.4 | max 0.4 | max 0.4 |
| Mn | 0.40-0.70 | 0.40-0.70 | 0.40-0.70 |
| S | max 0.035 | max 0.035 | max 0.035 |
| P | max 0.025 | max 0.025 | max 0.025 |
31CrMoV9 Steel Properties
31CrMoV9 Alloy Steel is esteemed for its exceptional mechanical
properties, including:
| Tensile strength Rm | 900 – 1100 N/mm2 |
| Brinell hardness | 284 – 346 HB |
| Yield strength Rp0.2 | > 700 N/mm² |
| Strain | > 11 % |
| Fracture reduction | > 45% |
Forging of 31CrMoV9
Forging of 31CrMoV9 steel should be done between 1050°C to 850°C,
followed by cooling in the furnace or in air. This process enhances
its mechanical properties by refining the steel’s microstructure.
Heat Treatment of 31CrMoV9
For steel 1.8519, the heat treatment involves several steps to
optimize its mechanical properties.
- Initially, it undergoes soft annealing between 680°C and 720°C, allowing for slow cooling to achieve a
specific hardness.
- Hardening is performed at higher temperatures, between 840°C and 880°C,
utilizing oil or water for quenching.
- The tempering process follows, conducted between 570°C and 680°C, with air
cooling to adjust the steel’s hardness and strength.
- Finally, stress relieving is recommended after mechanical processing to mitigate residual
stress, recommended within a specific temperature range.
Application of 31CrMoV9
31CrMoV9 finds its application in areas requiring high strength and
endurance against wear and fatigue. Common applications include:
- Automotive components
- Gear and engine parts
- High-strength bolts and fasteners
- Components for the oil and gas industry
Why Choose Otai for 31CrMoV9
Choosing Otai Special Steel for 31CrMoV9 means opting for
reliability, quality, and unmatched expertise. Our advantages
include:
- Adherence to ISO 9001 quality systems with rigorous internal
quality control.
- A comprehensive stock of popular materials for quick delivery and
31CrMoV9 is available in stock.
- Competitive pricing and flexible payment terms. Send us inquiry and
best offer would be sent to you within 12 hours or on the same day.
- Experienced sales teams serving clients globally, ensuring the
supply of high-quality 31CrMoV9 as per your specifications.
In conclusion, 31CrMoV9 is an engineering steel that combines
durability, strength, and versatility. Otai Special Steel is your
go-to supplier for high-quality 31CrMoV9, offering expert guidance
and fast, reliable service. Whether you’re a distributor, end user,
or trading company, we’re here to meet your needs with excellence.
