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For Requirements: |
High strength, high fatigue through hardening steel |
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Melt Practice: |
VIM-VAR |
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Alternative to: |
300M |
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Specifications: |
Euro: 40SiNiCrMoV10 |
Get NC310YW at Sullivan Steel
We stock NC310YW VIM-VAR-melted bars from 0.591" (15mm) to 6.496" (165mm). Have questions about this grade or need additional sizes? Reach out to an expert using our Live Chat feature, contact us, or include a note when you request a quote:
Chemical Composition
| % | C | Mn | Si | Cr | Ni | Mo | V |
|---|---|---|---|---|---|---|---|
| Min. | 0.37 | 0.50 | 2.60 | 0.65 | 1.50 | 0.30 | 0.10 |
| Max. | 0.44 | 0.95 | 2.85 | 1.05 | 2.10 | 0.55 | 0.30 |
Typical Applications
Motorsports and aerospace manufacturers use NC310YW in a wide range of applications that demand strength under extreme forces and rotational speeds. Some common use cases include:
- Transmission shafts
- Gears
- Driveshafts/tripods (in Formula 1 cars)
- Axle shafts
- Torsion bars
Comparison to Other Materials
NC310YW provides a significant boost in strength over 300M and 4340. While not as tough as Aermet or Maraging grades, NC310YW is a good option when you need extra strength but don’t need the massive boost — or price tag — of an Aermet or Maraging grade.
Review NC310YW’s mechanical properties to see how it stacks up against 300M, Aermet, and Maraging grades:
Typical Mechanical Properties
| Heat Treatment | Ultimate Tensile Strength (MPa) | 0.2 % Yield Strength (MPa) | E 5d% (J) | KV (J) | K1c (MPa/m) | Lf core (MPa) | Lf Case (MPa) |
|---|---|---|---|---|---|---|---|
| 930°C/Gas-75°C 2x300°C |
2150 | 1790 | 12 | 40 | 52 | 930 | 1008 |
Comparison to Other Materials
| NC310YW | 300M | Aermet 100 | Aermet 310 | Maraging 250 | Maraging 300 | Maraging 350 | |
|---|---|---|---|---|---|---|---|
| UTS | 311 | 288 | 285 | 315 | 254 | 293 | 342 |
| Yield Strength | 260 | 245 | 250 | 275 | 248 | 286 | 336 |
| Elongation | 12% | 11% | 14% | 16% | 11% | 10% | 6.20% |
| Fracture Toughness | 40 | 70 | 115 | 65 | 75 | 70 | 70 |
Heat treatment
- Hardening: Heat to 1688/1724°F (920/940°C), then oil quench
- Sub-zero treatment: Cool to -103°F (-75°C), then hold for 4 hours (perform within 4 hours of quenching)
- Double temper at 572°F (300°C)
Sullivan Steel Has Nc310YW Bars In Stock
