Nitriding 135M
Nitriding 135M is a low alloy nitriding grade that provides a high case hardness while still maintaining high strength in the core. This alloy is perfect for when high surface hardness for wear and abrasion is needed, such as stressed gears in rotorcraft industry. Nitriding 135M is suitable up to 1000°F.
| FOR REQUIREMENTS: | Nitriding Grade, High Case Hardness |
| MELT PRACTICE: |
VAR |
| SPECIFICATIONS: | AMS 6470 and 6471 – Domestically Produced |
Benefits of Nitriding 135M
- High Case Hardness and Core Strength
- Supplied in Pre-Hardened Condition – 28-32 HRC
- Heat Resistance to temps up to 1000°F
- Good Resistance to Corrosion
- Alternative to AISI 4140
Typical Applications
- Aircraft and High Performance Gears
- Crankshafts and Camshafts
- Pinions, Bushings, & Bolts
- Pump Parts, Valve Sleeves, and Hydraulic Parts
Chemical Composition – VAR
| C | Cr | Si | Ni | Mn | Mo | Al | P | |
|---|---|---|---|---|---|---|---|---|
| min. | 0.38 | 1.40 | 0.20 | – | 0.50 | 0.30 | 0.95 | – |
| max. | 0.43 | 1.80 | 0.40 | 0.25 | 0.80 | 0.40 | 1.20 | 0.025 |
Stocking Sizes
0.375″ – 3.000″Ø
