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About Carbon Steel, Alloy Steel, Spring Steel, and Cast Iron
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Fatigue-Resistant High-Strength 300M Alloy Steel Rods
- Yield Strength: 100,000 psi
- Hardness: Rockwell C25 (Hard)
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Rockwell C54
- Specifications Met: ASTM A579
A modified version of 4340 alloy steel, 300M is used in applications that require high yield strength, such as torsion bars and drive shafts. This material has been normalized for consistent hardening and machining.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ACTIVITY after your order ships.